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authorLen Brown <len.brown@intel.com>2009-01-09 03:39:43 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:39:43 -0500
commitb2576e1d4408e134e2188c967b1f28af39cd79d4 (patch)
tree004f3c82faab760f304ce031d6d2f572e7746a50 /drivers/char
parent3cc8a5f4ba91f67bbdb81a43a99281a26aab8d77 (diff)
parent2150edc6c5cf00f7adb54538b9ea2a3e9cedca3f (diff)
Merge branch 'linus' into release
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/Kconfig32
-rw-r--r--drivers/char/Makefile2
-rw-r--r--drivers/char/agp/intel-agp.c11
-rw-r--r--drivers/char/amiserial.c34
-rw-r--r--drivers/char/bsr.c84
-rw-r--r--drivers/char/consolemap.c2
-rw-r--r--drivers/char/cyclades.c2
-rw-r--r--drivers/char/ds1620.c25
-rw-r--r--drivers/char/epca.c267
-rw-r--r--drivers/char/esp.c61
-rw-r--r--drivers/char/generic_serial.c76
-rw-r--r--drivers/char/hpet.c2
-rw-r--r--drivers/char/hvc_beat.c4
-rw-r--r--drivers/char/hvc_console.c16
-rw-r--r--drivers/char/hvc_console.h2
-rw-r--r--drivers/char/hvc_iseries.c4
-rw-r--r--drivers/char/hvc_iucv.c850
-rw-r--r--drivers/char/hvc_udbg.c96
-rw-r--r--drivers/char/hvc_vio.c4
-rw-r--r--drivers/char/hvcs.c2
-rw-r--r--drivers/char/hvsi.c14
-rw-r--r--drivers/char/hw_random/n2-drv.c2
-rw-r--r--drivers/char/i8k.c16
-rw-r--r--drivers/char/isicom.c166
-rw-r--r--drivers/char/istallion.c221
-rw-r--r--drivers/char/mem.c3
-rw-r--r--drivers/char/moxa.c26
-rw-r--r--drivers/char/mwave/mwavedd.c2
-rw-r--r--drivers/char/mxser.c150
-rw-r--r--drivers/char/n_r3964.c12
-rw-r--r--drivers/char/n_tty.c792
-rw-r--r--drivers/char/nozomi.c85
-rw-r--r--drivers/char/nvram.c264
-rw-r--r--drivers/char/nwflash.c8
-rw-r--r--drivers/char/pcmcia/synclink_cs.c479
-rw-r--r--drivers/char/pty.c59
-rw-r--r--drivers/char/random.c41
-rw-r--r--drivers/char/rio/rio_linux.c35
-rw-r--r--drivers/char/riscom8.c194
-rw-r--r--drivers/char/rocket.c320
-rw-r--r--drivers/char/rocket.h2
-rw-r--r--drivers/char/rocket_int.h5
-rw-r--r--drivers/char/rtc.c17
-rw-r--r--drivers/char/selection.c2
-rw-r--r--drivers/char/ser_a2232.c23
-rw-r--r--drivers/char/serial167.c32
-rw-r--r--drivers/char/specialix.c34
-rw-r--r--drivers/char/stallion.c169
-rw-r--r--drivers/char/sx.c31
-rw-r--r--drivers/char/synclink.c177
-rw-r--r--drivers/char/synclink_gt.c120
-rw-r--r--drivers/char/synclinkmp.c171
-rw-r--r--drivers/char/sysrq.c38
-rw-r--r--drivers/char/tpm/tpm_nsc.c35
-rw-r--r--drivers/char/tty_audit.c76
-rw-r--r--drivers/char/tty_io.c40
-rw-r--r--drivers/char/tty_ldisc.c30
-rw-r--r--drivers/char/tty_port.c225
-rw-r--r--drivers/char/virtio_console.c30
-rw-r--r--drivers/char/vme_scc.c27
-rw-r--r--drivers/char/vt.c17
-rw-r--r--drivers/char/vt_ioctl.c2
62 files changed, 3378 insertions, 2390 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 43d6ba83a19..f5be8081cd8 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -190,7 +190,7 @@ config DIGIEPCA
config ESPSERIAL
tristate "Hayes ESP serial port support"
- depends on SERIAL_NONSTANDARD && ISA && ISA_DMA_API
+ depends on SERIAL_NONSTANDARD && ISA && ISA_DMA_API && BROKEN
help
This is a driver which supports Hayes ESP serial ports. Both single
port cards and multiport cards are supported. Make sure to read
@@ -443,6 +443,17 @@ config UNIX98_PTYS
All modern Linux systems use the Unix98 ptys. Say Y unless
you're on an embedded system and want to conserve memory.
+config DEVPTS_MULTIPLE_INSTANCES
+ bool "Support multiple instances of devpts"
+ depends on UNIX98_PTYS
+ default n
+ ---help---
+ Enable support for multiple instances of devpts filesystem.
+ If you want to have isolated PTY namespaces (eg: in containers),
+ say Y here. Otherwise, say N. If enabled, each mount of devpts
+ filesystem with the '-o newinstance' option will create an
+ independent PTY namespace.
+
config LEGACY_PTYS
bool "Legacy (BSD) PTY support"
default y
@@ -605,6 +616,7 @@ config HVC_ISERIES
default y
select HVC_DRIVER
select HVC_IRQ
+ select VIOPATH
help
iSeries machines support a hypervisor virtual console.
@@ -622,6 +634,16 @@ config HVC_BEAT
help
Toshiba's Cell Reference Set Beat Console device driver
+config HVC_IUCV
+ bool "z/VM IUCV Hypervisor console support (VM only)"
+ depends on S390
+ select HVC_DRIVER
+ select IUCV
+ default y
+ help
+ This driver provides a Hypervisor console (HVC) back-end to access
+ a Linux (console) terminal via a z/VM IUCV communication path.
+
config HVC_XEN
bool "Xen Hypervisor Console support"
depends on XEN
@@ -631,6 +653,12 @@ config HVC_XEN
help
Xen virtual console device driver
+config HVC_UDBG
+ bool "udbg based fake hypervisor console"
+ depends on PPC && EXPERIMENTAL
+ select HVC_DRIVER
+ default n
+
config VIRTIO_CONSOLE
tristate "Virtio console"
depends on VIRTIO
@@ -814,7 +842,7 @@ config JS_RTC
config GEN_RTC
tristate "Generic /dev/rtc emulation"
- depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32
+ depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32 && !BLACKFIN
---help---
If you say Y here and create a character special file /dev/rtc with
major number 10 and minor number 135 using mknod ("man mknod"), you
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 438f71317c5..9caf5b5ad1c 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -50,6 +50,8 @@ obj-$(CONFIG_HVC_BEAT) += hvc_beat.o
obj-$(CONFIG_HVC_DRIVER) += hvc_console.o
obj-$(CONFIG_HVC_IRQ) += hvc_irq.o
obj-$(CONFIG_HVC_XEN) += hvc_xen.o
+obj-$(CONFIG_HVC_IUCV) += hvc_iucv.o
+obj-$(CONFIG_HVC_UDBG) += hvc_udbg.o
obj-$(CONFIG_VIRTIO_CONSOLE) += virtio_console.o
obj-$(CONFIG_RAW_DRIVER) += raw.o
obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 9cf6e9bb017..c7714185f83 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -40,6 +40,8 @@
#define PCI_DEVICE_ID_INTEL_Q45_IG 0x2E12
#define PCI_DEVICE_ID_INTEL_G45_HB 0x2E20
#define PCI_DEVICE_ID_INTEL_G45_IG 0x2E22
+#define PCI_DEVICE_ID_INTEL_G41_HB 0x2E30
+#define PCI_DEVICE_ID_INTEL_G41_IG 0x2E32
/* cover 915 and 945 variants */
#define IS_I915 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB || \
@@ -63,7 +65,8 @@
#define IS_G4X (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGD_E_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q45_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB || \
- agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_GM45_HB)
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_GM45_HB || \
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G41_HB)
extern int agp_memory_reserved;
@@ -1196,6 +1199,7 @@ static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
case PCI_DEVICE_ID_INTEL_IGD_E_HB:
case PCI_DEVICE_ID_INTEL_Q45_HB:
case PCI_DEVICE_ID_INTEL_G45_HB:
+ case PCI_DEVICE_ID_INTEL_G41_HB:
*gtt_offset = *gtt_size = MB(2);
break;
default:
@@ -2156,13 +2160,15 @@ static const struct intel_driver_description {
{ PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
NULL, &intel_g33_driver },
{ PCI_DEVICE_ID_INTEL_GM45_HB, PCI_DEVICE_ID_INTEL_GM45_IG, 0,
- "Mobile Intel? GM45 Express", NULL, &intel_i965_driver },
+ "Mobile IntelĀ® GM45 Express", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IGD_E_HB, PCI_DEVICE_ID_INTEL_IGD_E_IG, 0,
"Intel Integrated Graphics Device", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_Q45_HB, PCI_DEVICE_ID_INTEL_Q45_IG, 0,
"Q45/Q43", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_G45_HB, PCI_DEVICE_ID_INTEL_G45_IG, 0,
"G45/G43", NULL, &intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_G41_HB, PCI_DEVICE_ID_INTEL_G41_IG, 0,
+ "G41", NULL, &intel_i965_driver },
{ 0, 0, 0, NULL, NULL, NULL }
};
@@ -2360,6 +2366,7 @@ static struct pci_device_id agp_intel_pci_table[] = {
ID(PCI_DEVICE_ID_INTEL_IGD_E_HB),
ID(PCI_DEVICE_ID_INTEL_Q45_HB),
ID(PCI_DEVICE_ID_INTEL_G45_HB),
+ ID(PCI_DEVICE_ID_INTEL_G41_HB),
{ }
};
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index b97aebd7aeb..4e0cfdeab14 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -170,7 +170,7 @@ static __inline__ void rtsdtr_ctrl(int bits)
*/
static void rs_stop(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_stop"))
@@ -190,7 +190,7 @@ static void rs_stop(struct tty_struct *tty)
static void rs_start(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_start"))
@@ -861,7 +861,7 @@ static int rs_put_char(struct tty_struct *tty, unsigned char ch)
static void rs_flush_chars(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
@@ -934,7 +934,7 @@ static int rs_write(struct tty_struct * tty, const unsigned char *buf, int count
static int rs_write_room(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_write_room"))
return 0;
@@ -943,7 +943,7 @@ static int rs_write_room(struct tty_struct *tty)
static int rs_chars_in_buffer(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
return 0;
@@ -952,7 +952,7 @@ static int rs_chars_in_buffer(struct tty_struct *tty)
static void rs_flush_buffer(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
@@ -969,7 +969,7 @@ static void rs_flush_buffer(struct tty_struct *tty)
*/
static void rs_send_xchar(struct tty_struct *tty, char ch)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_send_char"))
@@ -1004,7 +1004,7 @@ static void rs_send_xchar(struct tty_struct *tty, char ch)
*/
static void rs_throttle(struct tty_struct * tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
@@ -1029,7 +1029,7 @@ static void rs_throttle(struct tty_struct * tty)
static void rs_unthrottle(struct tty_struct * tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
@@ -1194,7 +1194,7 @@ static int get_lsr_info(struct async_struct * info, unsigned int __user *value)
static int rs_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned char control, status;
unsigned long flags;
@@ -1217,7 +1217,7 @@ static int rs_tiocmget(struct tty_struct *tty, struct file *file)
static int rs_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
@@ -1244,7 +1244,7 @@ static int rs_tiocmset(struct tty_struct *tty, struct file *file,
*/
static int rs_break(struct tty_struct *tty, int break_state)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_break"))
@@ -1264,7 +1264,7 @@ static int rs_break(struct tty_struct *tty, int break_state)
static int rs_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
struct async_icount cprev, cnow; /* kernel counter temps */
struct serial_icounter_struct icount;
void __user *argp = (void __user *)arg;
@@ -1368,7 +1368,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file,
static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
unsigned int cflag = tty->termios->c_cflag;
@@ -1428,7 +1428,7 @@ static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
*/
static void rs_close(struct tty_struct *tty, struct file * filp)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
struct serial_state *state;
unsigned long flags;
@@ -1523,7 +1523,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
*/
static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned long orig_jiffies, char_time;
int lsr;
@@ -1587,7 +1587,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
*/
static void rs_hangup(struct tty_struct *tty)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
struct serial_state *state = info->state;
if (serial_paranoia_check(info, tty->name, "rs_hangup"))
diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index 456f54db73e..977dfb1096a 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -60,6 +60,8 @@ struct bsr_dev {
unsigned bsr_num; /* bsr id number for its type */
int bsr_minor;
+ struct list_head bsr_list;
+
dev_t bsr_dev;
struct cdev bsr_cdev;
struct device *bsr_device;
@@ -67,8 +69,8 @@ struct bsr_dev {
};
-static unsigned num_bsr_devs;
-static struct bsr_dev *bsr_devs;
+static unsigned total_bsr_devs;
+static struct list_head bsr_devs = LIST_HEAD_INIT(bsr_devs);
static struct class *bsr_class;
static int bsr_major;
@@ -146,24 +148,25 @@ const static struct file_operations bsr_fops = {
static void bsr_cleanup_devs(void)
{
- int i;
- for (i=0 ; i < num_bsr_devs; i++) {
- struct bsr_dev *cur = bsr_devs + i;
+ struct bsr_dev *cur, *n;
+
+ list_for_each_entry_safe(cur, n, &bsr_devs, bsr_list) {
if (cur->bsr_device) {
cdev_del(&cur->bsr_cdev);
device_del(cur->bsr_device);
}
+ list_del(&cur->bsr_list);
+ kfree(cur);
}
-
- kfree(bsr_devs);
}
-static int bsr_create_devs(struct device_node *bn)
+static int bsr_add_node(struct device_node *bn)
{
- int bsr_stride_len, bsr_bytes_len;
+ int bsr_stride_len, bsr_bytes_len, num_bsr_devs;
const u32 *bsr_stride;
const u32 *bsr_bytes;
unsigned i;
+ int ret = -ENODEV;
bsr_stride = of_get_property(bn, "ibm,lock-stride", &bsr_stride_len);
bsr_bytes = of_get_property(bn, "ibm,#lock-bytes", &bsr_bytes_len);
@@ -171,35 +174,36 @@ static int bsr_create_devs(struct device_node *bn)
if (!bsr_stride || !bsr_bytes ||
(bsr_stride_len != bsr_bytes_len)) {
printk(KERN_ERR "bsr of-node has missing/incorrect property\n");
- return -ENODEV;
+ return ret;
}
num_bsr_devs = bsr_bytes_len / sizeof(u32);
- /* only a warning, its informational since we'll fail and exit */
- WARN_ON(num_bsr_devs > BSR_MAX_DEVS);
-
- bsr_devs = kzalloc(sizeof(struct bsr_dev) * num_bsr_devs, GFP_KERNEL);
- if (!bsr_devs)
- return -ENOMEM;
-
for (i = 0 ; i < num_bsr_devs; i++) {
- struct bsr_dev *cur = bsr_devs + i;
+ struct bsr_dev *cur = kzalloc(sizeof(struct bsr_dev),
+ GFP_KERNEL);
struct resource res;
int result;
+ if (!cur) {
+ printk(KERN_ERR "Unable to alloc bsr dev\n");
+ ret = -ENOMEM;
+ goto out_err;
+ }
+
result = of_address_to_resource(bn, i, &res);
if (result < 0) {
- printk(KERN_ERR "bsr of-node has invalid reg property\n");
- goto out_err;
+ printk(KERN_ERR "bsr of-node has invalid reg property, skipping\n");
+ kfree(cur);
+ continue;
}
- cur->bsr_minor = i;
+ cur->bsr_minor = i + total_bsr_devs;
cur->bsr_addr = res.start;
cur->bsr_len = res.end - res.start + 1;
cur->bsr_bytes = bsr_bytes[i];
cur->bsr_stride = bsr_stride[i];
- cur->bsr_dev = MKDEV(bsr_major, i);
+ cur->bsr_dev = MKDEV(bsr_major, i + total_bsr_devs);
switch(cur->bsr_bytes) {
case 8:
@@ -220,14 +224,15 @@ static int bsr_create_devs(struct device_node *bn)
}
cur->bsr_num = bsr_types[cur->bsr_type];
- bsr_types[cur->bsr_type] = cur->bsr_num + 1;
snprintf(cur->bsr_name, 32, "bsr%d_%d",
cur->bsr_bytes, cur->bsr_num);
cdev_init(&cur->bsr_cdev, &bsr_fops);
result = cdev_add(&cur->bsr_cdev, cur->bsr_dev, 1);
- if (result)
+ if (result) {
+ kfree(cur);
goto out_err;
+ }
cur->bsr_device = device_create(bsr_class, NULL, cur->bsr_dev,
cur, cur->bsr_name);
@@ -235,16 +240,37 @@ static int bsr_create_devs(struct device_node *bn)
printk(KERN_ERR "device_create failed for %s\n",
cur->bsr_name);
cdev_del(&cur->bsr_cdev);
+ kfree(cur);
goto out_err;
}
+
+ bsr_types[cur->bsr_type] = cur->bsr_num + 1;
+ list_add_tail(&cur->bsr_list, &bsr_devs);
}
+ total_bsr_devs += num_bsr_devs;
+
return 0;
out_err:
bsr_cleanup_devs();
- return -ENODEV;
+ return ret;
+}
+
+static int bsr_create_devs(struct device_node *bn)
+{
+ int ret;
+
+ while (bn) {
+ ret = bsr_add_node(bn);
+ if (ret) {
+ of_node_put(bn);
+ return ret;
+ }
+ bn = of_find_compatible_node(bn, NULL, "ibm,bsr");
+ }
+ return 0;
}
static int __init bsr_init(void)
@@ -254,7 +280,7 @@ static int __init bsr_init(void)
int ret = -ENODEV;
int result;
- np = of_find_compatible_node(NULL, "ibm,bsr", "ibm,bsr");
+ np = of_find_compatible_node(NULL, NULL, "ibm,bsr");
if (!np)
goto out_err;
@@ -272,10 +298,10 @@ static int __init bsr_init(void)
goto out_err_2;
}
- if ((ret = bsr_create_devs(np)) < 0)
+ if ((ret = bsr_create_devs(np)) < 0) {
+ np = NULL;
goto out_err_3;
-
- of_node_put(np);
+ }
return 0;
diff --git a/drivers/char/consolemap.c b/drivers/char/consolemap.c
index 4246b8e36cb..45d3e80156d 100644
--- a/drivers/char/consolemap.c
+++ b/drivers/char/consolemap.c
@@ -554,7 +554,7 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
__get_user(fontpos, &list->fontpos);
if ((err1 = con_insert_unipair(p, unicode,fontpos)) != 0)
err = err1;
- list++;
+ list++;
}
if (con_unify_unimap(vc, p))
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 5e5b1dc1a0a..6a59f72a9c2 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -5010,7 +5010,7 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
if (nchan == 0) {
dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
"Serial-Modules\n");
- return -EIO;
+ goto err_unmap;
}
} else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
struct RUNTIME_9060 __iomem *ctl_addr;
diff --git a/drivers/char/ds1620.c b/drivers/char/ds1620.c
index 74e9cd81b5b..61f0146e215 100644
--- a/drivers/char/ds1620.c
+++ b/drivers/char/ds1620.c
@@ -43,52 +43,51 @@ static const char *fan_state[] = { "off", "on", "on (hardwired)" };
* chance that the WaveArtist driver could touch these bits to
* enable or disable the speaker.
*/
-extern spinlock_t gpio_lock;
extern unsigned int system_rev;
static inline void netwinder_ds1620_set_clk(int clk)
{
- gpio_modify_op(GPIO_DSCLK, clk ? GPIO_DSCLK : 0);
+ nw_gpio_modify_op(GPIO_DSCLK, clk ? GPIO_DSCLK : 0);
}
static inline void netwinder_ds1620_set_data(int dat)
{
- gpio_modify_op(GPIO_DATA, dat ? GPIO_DATA : 0);
+ nw_gpio_modify_op(GPIO_DATA, dat ? GPIO_DATA : 0);
}
static inline int netwinder_ds1620_get_data(void)
{
- return gpio_read() & GPIO_DATA;
+ return nw_gpio_read() & GPIO_DATA;
}
static inline void netwinder_ds1620_set_data_dir(int dir)
{
- gpio_modify_io(GPIO_DATA, dir ? GPIO_DATA : 0);
+ nw_gpio_modify_io(GPIO_DATA, dir ? GPIO_DATA : 0);
}
static inline void netwinder_ds1620_reset(void)
{
- cpld_modify(CPLD_DS_ENABLE, 0);
- cpld_modify(CPLD_DS_ENABLE, CPLD_DS_ENABLE);
+ nw_cpld_modify(CPLD_DS_ENABLE, 0);
+ nw_cpld_modify(CPLD_DS_ENABLE, CPLD_DS_ENABLE);
}
static inline void netwinder_lock(unsigned long *flags)
{
- spin_lock_irqsave(&gpio_lock, *flags);
+ spin_lock_irqsave(&nw_gpio_lock, *flags);
}
static inline void netwinder_unlock(unsigned long *flags)
{
- spin_unlock_irqrestore(&gpio_lock, *flags);
+ spin_unlock_irqrestore(&nw_gpio_lock, *flags);
}
static inline void netwinder_set_fan(int i)
{
unsigned long flags;
- spin_lock_irqsave(&gpio_lock, flags);
- gpio_modify_op(GPIO_FAN, i ? GPIO_FAN : 0);
- spin_unlock_irqrestore(&gpio_lock, flags);
+ spin_lock_irqsave(&nw_gpio_lock, flags);
+ nw_gpio_modify_op(GPIO_FAN, i ? GPIO_FAN : 0);
+ spin_unlock_irqrestore(&nw_gpio_lock, flags);
}
static inline int netwinder_get_fan(void)
@@ -96,7 +95,7 @@ static inline int netwinder_get_fan(void)
if ((system_rev & 0xf000) == 0x4000)
return FAN_ALWAYS_ON;
- return (gpio_read() & GPIO_FAN) ? FAN_ON : FAN_OFF;
+ return (nw_gpio_read() & GPIO_FAN) ? FAN_ON : FAN_OFF;
}
/*
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index cf2461d34e5..af7c13ca949 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -69,7 +69,9 @@ static int invalid_lilo_config;
/*
* The ISA boards do window flipping into the same spaces so its only sane with
- * a single lock. It's still pretty efficient.
+ * a single lock. It's still pretty efficient. This lock guards the hardware
+ * and the tty_port lock guards the kernel side stuff like use counts. Take
+ * this lock inside the port lock if you must take both.
*/
static DEFINE_SPINLOCK(epca_lock);
@@ -156,14 +158,12 @@ static struct channel *verifyChannel(struct tty_struct *);
static void pc_sched_event(struct channel *, int);
static void epca_error(int, char *);
static void pc_close(struct tty_struct *, struct file *);
-static void shutdown(struct channel *);
+static void shutdown(struct channel *, struct tty_struct *tty);
static void pc_hangup(struct tty_struct *);
static int pc_write_room(struct tty_struct *);
static int pc_chars_in_buffer(struct tty_struct *);
static void pc_flush_buffer(struct tty_struct *);
static void pc_flush_chars(struct tty_struct *);
-static int block_til_ready(struct tty_struct *, struct file *,
- struct channel *);
static int pc_open(struct tty_struct *, struct file *);
static void post_fep_init(unsigned int crd);
static void epcapoll(unsigned long);
@@ -173,7 +173,7 @@ static unsigned termios2digi_h(struct channel *ch, unsigned);
static unsigned termios2digi_i(struct channel *ch, unsigned);
static unsigned termios2digi_c(struct channel *ch, unsigned);
static void epcaparam(struct tty_struct *, struct channel *);
-static void receive_data(struct channel *);
+static void receive_data(struct channel *, struct tty_struct *tty);
static int pc_ioctl(struct tty_struct *, struct file *,
unsigned int, unsigned long);
static int info_ioctl(struct tty_struct *, struct file *,
@@ -392,7 +392,7 @@ static struct channel *verifyChannel(struct tty_struct *tty)
* through tty->driver_data this should catch it.
*/
if (tty) {
- struct channel *ch = (struct channel *)tty->driver_data;
+ struct channel *ch = tty->driver_data;
if (ch >= &digi_channels[0] && ch < &digi_channels[nbdevs]) {
if (ch->magic == EPCA_MAGIC)
return ch;
@@ -419,76 +419,34 @@ static void epca_error(int line, char *msg)
static void pc_close(struct tty_struct *tty, struct file *filp)
{
struct channel *ch;
- unsigned long flags;
+ struct tty_port *port;
/*
* verifyChannel returns the channel from the tty struct if it is
* valid. This serves as a sanity check.
*/
ch = verifyChannel(tty);
- if (ch != NULL) {
- spin_lock_irqsave(&epca_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&epca_lock, flags);
- return;
- }
- if (ch->port.count-- > 1) {
- /* Begin channel is open more than once */
- /*
- * Return without doing anything. Someone might still
- * be using the channel.
- */
- spin_unlock_irqrestore(&epca_lock, flags);
- return;
- }
- /* Port open only once go ahead with shutdown & reset */
- BUG_ON(ch->port.count < 0);
-
- /*
- * Let the rest of the driver know the channel is being closed.
- * This becomes important if an open is attempted before close
- * is finished.
- */
- ch->port.flags |= ASYNC_CLOSING;
- tty->closing = 1;
-
- spin_unlock_irqrestore(&epca_lock, flags);
-
- if (ch->port.flags & ASYNC_INITIALIZED) {
- /* Setup an event to indicate when the
- transmit buffer empties */
- setup_empty_event(tty, ch);
- /* 30 seconds timeout */
- tty_wait_until_sent(tty, 3000);
- }
- pc_flush_buffer(tty);
+ if (ch == NULL)
+ return;
+ port = &ch->port;
- tty_ldisc_flush(tty);
- shutdown(ch);
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
- spin_lock_irqsave(&epca_lock, flags);
- tty->closing = 0;
- ch->event = 0;
- ch->port.tty = NULL;
- spin_unlock_irqrestore(&epca_lock, flags);
+ pc_flush_buffer(tty);
+ shutdown(ch, tty);
- if (ch->port.blocked_open) {
- if (ch->close_delay)
- msleep_interruptible(jiffies_to_msecs(ch->close_delay));
- wake_up_interruptible(&ch->port.open_wait);
- }
- ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED |
- ASYNC_CLOSING);
- wake_up_interruptible(&ch->port.close_wait);
- }
+ tty_port_close_end(port, tty);
+ ch->event = 0; /* FIXME: review ch->event locking */
+ tty_port_tty_set(port, NULL);
}
-static void shutdown(struct channel *ch)
+static void shutdown(struct channel *ch, struct tty_struct *tty)
{
unsigned long flags;
- struct tty_struct *tty;
struct board_chan __iomem *bc;
+ struct tty_port *port = &ch->port;
- if (!(ch->port.flags & ASYNC_INITIALIZED))
+ if (!(port->flags & ASYNC_INITIALIZED))
return;
spin_lock_irqsave(&epca_lock, flags);
@@ -503,7 +461,6 @@ static void shutdown(struct channel *ch)
*/
if (bc)
writeb(0, &bc->idata);
- tty = ch->port.tty;
/* If we're a modem control device and HUPCL is on, drop RTS & DTR. */
if (tty->termios->c_cflag & HUPCL) {
@@ -517,32 +474,26 @@ static void shutdown(struct channel *ch)
* will have to reinitialized. Set a flag to indicate this.
*/
/* Prevent future Digi programmed interrupts from coming active */
- ch->port.flags &= ~ASYNC_INITIALIZED;
+ port->flags &= ~ASYNC_INITIALIZED;
spin_unlock_irqrestore(&epca_lock, flags);
}
static void pc_hangup(struct tty_struct *tty)
{
struct channel *ch;
+
/*
* verifyChannel returns the channel from the tty struct if it is
* valid. This serves as a sanity check.
*/
ch = verifyChannel(tty);
if (ch != NULL) {
- unsigned long flags;
-
pc_flush_buffer(tty);
tty_ldisc_flush(tty);
- shutdown(ch);
+ shutdown(ch, tty);
- spin_lock_irqsave(&epca_lock, flags);
- ch->port.tty = NULL;
- ch->event = 0;
- ch->port.count = 0;
- ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED);
- spin_unlock_irqrestore(&epca_lock, flags);
- wake_up_interruptible(&ch->port.open_wait);
+ ch->event = 0; /* FIXME: review locking of ch->event */
+ tty_port_hangup(&ch->port);
}
}
@@ -786,100 +737,22 @@ static void pc_flush_chars(struct tty_struct *tty)
}
}
-static int block_til_ready(struct tty_struct *tty,
- struct file *filp, struct channel *ch)
+static int epca_carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval, do_clocal = 0;
- unsigned long flags;
-
- if (tty_hung_up_p(filp)) {
- if (ch->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- return retval;
- }
-
- /*
- * If the device is in the middle of being closed, then block until
- * it's done, and then try again.
- */
- if (ch->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&ch->port.close_wait);
-
- if (ch->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- if (filp->f_flags & O_NONBLOCK) {
- /*
- * If non-blocking mode is set, then make the check up front
- * and then exit.
- */
- ch->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
- /* Block waiting for the carrier detect and the line to become free */
-
- retval = 0;
- add_wait_queue(&ch->port.open_wait, &wait);
-
- spin_lock_irqsave(&epca_lock, flags);
- /* We dec count so that pc_close will know when to free things */
- if (!tty_hung_up_p(filp))
- ch->port.count--;
- ch->port.blocked_open++;
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(ch->port.flags & ASYNC_INITIALIZED)) {
- if (ch->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(ch->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (ch->imodem & ch->dcd)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- spin_unlock_irqrestore(&epca_lock, flags);
- /*
- * Allow someone else to be scheduled. We will occasionally go
- * through this loop until one of the above conditions change.
- * The below schedule call will allow other processes to enter
- * and prevent this loop from hogging the cpu.
- */
- schedule();
- spin_lock_irqsave(&epca_lock, flags);
- }
-
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&ch->port.open_wait, &wait);
- if (!tty_hung_up_p(filp))
- ch->port.count++;
- ch->port.blocked_open--;
-
- spin_unlock_irqrestore(&epca_lock, flags);
-
- if (retval)
- return retval;
-
- ch->port.flags |= ASYNC_NORMAL_ACTIVE;
+ struct channel *ch = container_of(port, struct channel, port);
+ if (ch->imodem & ch->dcd)
+ return 1;
return 0;
}
+static void epca_raise_dtr_rts(struct tty_port *port)
+{
+}
+
static int pc_open(struct tty_struct *tty, struct file *filp)
{
struct channel *ch;
+ struct tty_port *port;
unsigned long flags;
int line, retval, boardnum;
struct board_chan __iomem *bc;
@@ -890,12 +763,13 @@ static int pc_open(struct tty_struct *tty, struct file *filp)
return -ENODEV;
ch = &digi_channels[line];
+ port = &ch->port;
boardnum = ch->boardnum;
/* Check status of board configured in system. */
/*
- * I check to see if the epca_setup routine detected an user error. It
+ * I check to see if the epca_setup routine detected a user error. It
* might be better to put this in pc_init, but for the moment it goes
* here.
*/
@@ -926,22 +800,24 @@ static int pc_open(struct tty_struct *tty, struct file *filp)
return -ENODEV;
}
- spin_lock_irqsave(&epca_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
/*
* Every time a channel is opened, increment a counter. This is
* necessary because we do not wish to flush and shutdown the channel
* until the last app holding the channel open, closes it.
*/
- ch->port.count++;
+ port->count++;
/*
* Set a kernel structures pointer to our local channel structure. This
* way we can get to it when passed only a tty struct.
*/
tty->driver_data = ch;
+ port->tty = tty;
/*
* If this is the first time the channel has been opened, initialize
* the tty->termios struct otherwise let pc_close handle it.
*/
+ spin_lock(&epca_lock);
globalwinon(ch);
ch->statusflags = 0;
@@ -956,31 +832,33 @@ static int pc_open(struct tty_struct *tty, struct file *filp)
writew(head, &bc->rout);
/* Set the channels associated tty structure */
- ch->port.tty = tty;
/*
* The below routine generally sets up parity, baud, flow control
* issues, etc.... It effect both control flags and input flags.
*/
epcaparam(tty, ch);
- ch->port.flags |= ASYNC_INITIALIZED;
memoff(ch);
- spin_unlock_irqrestore(&epca_lock, flags);
+ spin_unlock(&epca_lock);
+ port->flags |= ASYNC_INITIALIZED;
+ spin_unlock_irqrestore(&port->lock, flags);
- retval = block_til_ready(tty, filp, ch);
+ retval = tty_port_block_til_ready(port, tty, filp);
if (retval)
return retval;
/*
* Set this again in case a hangup set it to zero while this open() was
* waiting for the line...
*/
- spin_lock_irqsave(&epca_lock, flags);
- ch->port.tty = tty;
+ spin_lock_irqsave(&port->lock, flags);
+ port->tty = tty;
+ spin_lock(&epca_lock);
globalwinon(ch);
/* Enable Digi Data events */
writeb(1, &bc->idata);
memoff(ch);
- spin_unlock_irqrestore(&epca_lock, flags);
+ spin_unlock(&epca_lock);
+ spin_unlock_irqrestore(&port->lock, flags);
return 0;
}
@@ -1016,8 +894,11 @@ static void __exit epca_module_exit(void)
}
ch = card_ptr[crd];
for (count = 0; count < bd->numports; count++, ch++) {
- if (ch && ch->port.tty)
- tty_hangup(ch->port.tty);
+ struct tty_struct *tty = tty_port_tty_get(&ch->port);
+ if (tty) {
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
}
}
pci_unregister_driver(&epca_driver);
@@ -1042,6 +923,11 @@ static const struct tty_operations pc_ops = {
.break_ctl = pc_send_break
};
+static const struct tty_port_operations epca_port_ops = {
+ .carrier_raised = epca_carrier_raised,
+ .raise_dtr_rts = epca_raise_dtr_rts,
+};
+
static int info_open(struct tty_struct *tty, struct file *filp)
{
return 0;
@@ -1377,6 +1263,7 @@ static void post_fep_init(unsigned int crd)
u16 tseg, rseg;
tty_port_init(&ch->port);
+ ch->port.ops = &epca_port_ops;
ch->brdchan = bc;
ch->mailbox = gd;
INIT_WORK(&ch->tqueue, do_softint);
@@ -1428,7 +1315,7 @@ static void post_fep_init(unsigned int crd)
ch->boardnum = crd;
ch->channelnum = i;
ch->magic = EPCA_MAGIC;
- ch->port.tty = NULL;
+ tty_port_tty_set(&ch->port, NULL);
if (shrinkmem) {
fepcmd(ch, SETBUFFER, 32, 0, 0, 0);
@@ -1510,7 +1397,7 @@ static void post_fep_init(unsigned int crd)
ch->fepstartca = 0;
ch->fepstopca = 0;
- ch->close_delay = 50;
+ ch->port.close_delay = 50;
spin_unlock_irqrestore(&epca_lock, flags);
}
@@ -1622,15 +1509,16 @@ static void doevent(int crd)
if (bc == NULL)
goto next;
+ tty = tty_port_tty_get(&ch->port);
if (event & DATA_IND) { /* Begin DATA_IND */
- receive_data(ch);
+ receive_data(ch, tty);
assertgwinon(ch);
} /* End DATA_IND */
/* else *//* Fix for DCD transition missed bug */
if (event & MODEMCHG_IND) {
/* A modem signal change has been indicated */
ch->imodem = mstat;
- if (ch->port.flags & ASYNC_CHECK_CD) {
+ if (test_bit(ASYNC_CHECK_CD, &ch->port.flags)) {
/* We are now receiving dcd */
if (mstat & ch->dcd)
wake_up_interruptible(&ch->port.open_wait);
@@ -1638,7 +1526,6 @@ static void doevent(int crd)
pc_sched_event(ch, EPCA_EVENT_HANGUP);
}
}
- tty = ch->port.tty;
if (tty) {
if (event & BREAK_IND) {
/* A break has been indicated */
@@ -1658,6 +1545,7 @@ static void doevent(int crd)
tty_wakeup(tty);
}
}
+ tty_kref_put(tty);
}
next:
globalwinon(ch);
@@ -1877,9 +1765,9 @@ static void epcaparam(struct tty_struct *tty, struct channel *ch)
* that the driver will wait on carrier detect.
*/
if (ts->c_cflag & CLOCAL)
- ch->port.flags &= ~ASYNC_CHECK_CD;
+ clear_bit(ASYNC_CHECK_CD, &ch->port.flags);
else
- ch->port.flags |= ASYNC_CHECK_CD;
+ set_bit(ASYNC_CHECK_CD, &ch->port.flags);
mval = ch->m_dtr | ch->m_rts;
} /* End CBAUD not detected */
iflag = termios2digi_i(ch, ts->c_iflag);
@@ -1952,11 +1840,10 @@ static void epcaparam(struct tty_struct *tty, struct channel *ch)
}
/* Caller holds lock */
-static void receive_data(struct channel *ch)
+static void receive_data(struct channel *ch, struct tty_struct *tty)
{
unchar *rptr;
struct ktermios *ts = NULL;
- struct tty_struct *tty;
struct board_chan __iomem *bc;
int dataToRead, wrapgap, bytesAvailable;
unsigned int tail, head;
@@ -1969,7 +1856,6 @@ static void receive_data(struct channel *ch)
globalwinon(ch);
if (ch->statusflags & RXSTOPPED)
return;
- tty = ch->port.tty;
if (tty)
ts = tty->termios;
bc = ch->brdchan;
@@ -2029,7 +1915,7 @@ static void receive_data(struct channel *ch)
globalwinon(ch);
writew(tail, &bc->rout);
/* Must be called with global data */
- tty_schedule_flip(ch->port.tty);
+ tty_schedule_flip(tty);
}
static int info_ioctl(struct tty_struct *tty, struct file *file,
@@ -2097,7 +1983,7 @@ static int info_ioctl(struct tty_struct *tty, struct file *file,
static int pc_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
struct board_chan __iomem *bc;
unsigned int mstat, mflag = 0;
unsigned long flags;
@@ -2131,7 +2017,7 @@ static int pc_tiocmget(struct tty_struct *tty, struct file *file)
static int pc_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
unsigned long flags;
if (!ch)
@@ -2178,7 +2064,7 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file,
unsigned int mflag, mstat;
unsigned char startc, stopc;
struct board_chan __iomem *bc;
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
void __user *argp = (void __user *)arg;
if (ch)
@@ -2352,15 +2238,16 @@ static void do_softint(struct work_struct *work)
struct channel *ch = container_of(work, struct channel, tqueue);
/* Called in response to a modem change event */
if (ch && ch->magic == EPCA_MAGIC) {
- struct tty_struct *tty = ch->port.tty;
+ struct tty_struct *tty = tty_port_tty_get(&ch->port);;
if (tty && tty->driver_data) {
if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) {
tty_hangup(tty);
wake_up_interruptible(&ch->port.open_wait);
- ch->port.flags &= ~ASYNC_NORMAL_ACTIVE;
+ clear_bit(ASYNC_NORMAL_ACTIVE, &ch->port.flags);
}
}
+ tty_kref_put(tty);
}
}
@@ -2473,7 +2360,7 @@ static void pc_unthrottle(struct tty_struct *tty)
static int pc_send_break(struct tty_struct *tty, int msec)
{
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
unsigned long flags;
if (msec == -1)
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index 7f077c0097f..45ec263ec01 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -2054,6 +2054,15 @@ static void esp_hangup(struct tty_struct *tty)
wake_up_interruptible(&info->port.open_wait);
}
+static int esp_carrier_raised(struct tty_port *port)
+{
+ struct esp_struct *info = container_of(port, struct esp_struct, port);
+ serial_out(info, UART_ESI_CMD1, ESI_GET_UART_STAT);
+ if (serial_in(info, UART_ESI_STAT2) & UART_MSR_DCD)
+ return 1;
+ return 0;
+}
+
/*
* ------------------------------------------------------------
* esp_open() and friends
@@ -2066,17 +2075,19 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
int retval;
int do_clocal = 0;
unsigned long flags;
+ int cd;
+ struct tty_port *port = &info->port;
/*
* If the device is in the middle of being closed, then block
* until it's done, and then try again.
*/
if (tty_hung_up_p(filp) ||
- (info->port.flags & ASYNC_CLOSING)) {
- if (info->port.flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->port.close_wait);
+ (port->flags & ASYNC_CLOSING)) {
+ if (port->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&port->close_wait);
#ifdef SERIAL_DO_RESTART
- if (info->port.flags & ASYNC_HUP_NOTIFY)
+ if (port->flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
@@ -2091,7 +2102,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -2101,20 +2112,20 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
/*
* Block waiting for the carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
#ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready before block: ttys%d, count = %d\n",
- info->line, info->port.count);
+ info->line, port->count);
#endif
spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp))
- info->port.count--;
- info->port.blocked_open++;
+ port->count--;
+ port->blocked_open++;
while (1) {
if ((tty->termios->c_cflag & CBAUD)) {
unsigned int scratch;
@@ -2129,9 +2140,9 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
}
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
- !(info->port.flags & ASYNC_INITIALIZED)) {
+ !(port->flags & ASYNC_INITIALIZED)) {
#ifdef SERIAL_DO_RESTART
- if (info->port.flags & ASYNC_HUP_NOTIFY)
+ if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
@@ -2141,11 +2152,9 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
break;
}
- serial_out(info, UART_ESI_CMD1, ESI_GET_UART_STAT);
- if (serial_in(info, UART_ESI_STAT2) & UART_MSR_DCD)
- do_clocal = 1;
+ cd = tty_port_carrier_raised(port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
+ if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal))
break;
if (signal_pending(current)) {
@@ -2154,25 +2163,25 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
}
#ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready blocking: ttys%d, count = %d\n",
- info->line, info->port.count);
+ info->line, port->count);
#endif
spin_unlock_irqrestore(&info->lock, flags);
schedule();
spin_lock_irqsave(&info->lock, flags);
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
if (!tty_hung_up_p(filp))
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
spin_unlock_irqrestore(&info->lock, flags);
#ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready after blocking: ttys%d, count = %d\n",
- info->line, info->port.count);
+ info->line, port->count);
#endif
if (retval)
return retval;
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -2329,6 +2338,10 @@ static const struct tty_operations esp_ops = {
.tiocmset = esp_tiocmset,
};
+static const struct tty_port_operations esp_port_ops = {
+ .esp_carrier_raised,
+};
+
/*
* The serial driver boot-time initialization code!
*/
@@ -2415,6 +2428,8 @@ static int __init espserial_init(void)
offset = 0;
do {
+ tty_port_init(&info->port);
+ info->port.ops = &esp_port_ops;
info->io_port = esp[i] + offset;
info->irq = irq[i];
info->line = (i * 8) + (offset / 8);
@@ -2437,8 +2452,6 @@ static int __init espserial_init(void)
info->config.flow_off = flow_off;
info->config.pio_threshold = pio_threshold;
info->next_port = ports;
- init_waitqueue_head(&info->port.open_wait);
- init_waitqueue_head(&info->port.close_wait);
init_waitqueue_head(&info->delta_msr_wait);
init_waitqueue_head(&info->break_wait);
ports = info;
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index c6090f84a2e..9e4e569dc00 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -376,7 +376,8 @@ static void gs_shutdown_port (struct gs_port *port)
void gs_hangup(struct tty_struct *tty)
{
- struct gs_port *port;
+ struct gs_port *port;
+ unsigned long flags;
func_enter ();
@@ -386,9 +387,11 @@ void gs_hangup(struct tty_struct *tty)
return;
gs_shutdown_port (port);
+ spin_lock_irqsave(&port->port.lock, flags);
port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|GS_ACTIVE);
port->port.tty = NULL;
port->port.count = 0;
+ spin_unlock_irqrestore(&port->port.lock, flags);
wake_up_interruptible(&port->port.open_wait);
func_exit ();
@@ -397,7 +400,8 @@ void gs_hangup(struct tty_struct *tty)
int gs_block_til_ready(void *port_, struct file * filp)
{
- struct gs_port *port = port_;
+ struct gs_port *gp = port_;
+ struct tty_port *port = &gp->port;
DECLARE_WAITQUEUE(wait, current);
int retval;
int do_clocal = 0;
@@ -409,16 +413,16 @@ int gs_block_til_ready(void *port_, struct file * filp)
if (!port) return 0;
- tty = port->port.tty;
+ tty = port->tty;
gs_dprintk (GS_DEBUG_BTR, "Entering gs_block_till_ready.\n");
/*
* If the device is in the middle of being closed, then block
* until it's done, and then try again.
*/
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY)
+ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
+ interruptible_sleep_on(&port->close_wait);
+ if (port->flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
@@ -432,7 +436,7 @@ int gs_block_til_ready(void *port_, struct file * filp)
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -444,34 +448,34 @@ int gs_block_til_ready(void *port_, struct file * filp)
/*
* Block waiting for the carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, port->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
gs_dprintk (GS_DEBUG_BTR, "after add waitq.\n");
- spin_lock_irqsave(&port->driver_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
if (!tty_hung_up_p(filp)) {
- port->port.count--;
+ port->count--;
}
- spin_unlock_irqrestore(&port->driver_lock, flags);
- port->port.blocked_open++;
+ port->blocked_open++;
+ spin_unlock_irqrestore(&port->lock, flags);
while (1) {
- CD = port->rd->get_CD (port);
+ CD = tty_port_carrier_raised(port);
gs_dprintk (GS_DEBUG_BTR, "CD is now %d.\n", CD);
set_current_state (TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
- !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
+ !(port->flags & ASYNC_INITIALIZED)) {
+ if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
break;
}
- if (!(port->port.flags & ASYNC_CLOSING) &&
+ if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal || CD))
break;
gs_dprintk (GS_DEBUG_BTR, "signal_pending is now: %d (%lx)\n",
@@ -483,19 +487,20 @@ int gs_block_til_ready(void *port_, struct file * filp)
schedule();
}
gs_dprintk (GS_DEBUG_BTR, "Got out of the loop. (%d)\n",
- port->port.blocked_open);
+ port->blocked_open);
set_current_state (TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
+
+ spin_lock_irqsave(&port->lock, flags);
if (!tty_hung_up_p(filp)) {
- port->port.count++;
+ port->count++;
}
- port->port.blocked_open--;
- if (retval)
- return retval;
-
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->blocked_open--;
+ if (retval == 0)
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ spin_unlock_irqrestore(&port->lock, flags);
func_exit ();
- return 0;
+ return retval;
}
@@ -506,7 +511,7 @@ void gs_close(struct tty_struct * tty, struct file * filp)
func_enter ();
- port = (struct gs_port *) tty->driver_data;
+ port = tty->driver_data;
if (!port) return;
@@ -516,10 +521,10 @@ void gs_close(struct tty_struct * tty, struct file * filp)
port->port.tty = tty;
}
- spin_lock_irqsave(&port->driver_lock, flags);
+ spin_lock_irqsave(&port->port.lock, flags);
if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
if (port->rd->hungup)
port->rd->hungup (port);
func_exit ();
@@ -538,7 +543,7 @@ void gs_close(struct tty_struct * tty, struct file * filp)
if (port->port.count) {
gs_dprintk(GS_DEBUG_CLOSE, "gs_close port %p: count: %d\n", port, port->port.count);
- spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
func_exit ();
return;
}
@@ -559,8 +564,10 @@ void gs_close(struct tty_struct * tty, struct file * filp)
* line status register.
*/
+ spin_lock_irqsave(&port->driver_lock, flags);
port->rd->disable_rx_interrupts (port);
spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
/* close has no way of returning "EINTR", so discard return value */
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
@@ -573,20 +580,25 @@ void gs_close(struct tty_struct * tty, struct file * filp)
tty_ldisc_flush(tty);
tty->closing = 0;
+ spin_lock_irqsave(&port->driver_lock, flags);
port->event = 0;
port->rd->close (port);
port->rd->shutdown_port (port);
+ spin_unlock_irqrestore(&port->driver_lock, flags);
+
+ spin_lock_irqsave(&port->port.lock, flags);
port->port.tty = NULL;
if (port->port.blocked_open) {
if (port->close_delay) {
- spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
msleep_interruptible(jiffies_to_msecs(port->close_delay));
- spin_lock_irqsave(&port->driver_lock, flags);
+ spin_lock_irqsave(&port->port.lock, flags);
}
wake_up_interruptible(&port->port.open_wait);
}
port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING | ASYNC_INITIALIZED);
+ spin_unlock_irqrestore(&port->port.lock, flags);
wake_up_interruptible(&port->port.close_wait);
func_exit ();
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 53fdc7ff387..32b8bbf5003 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -46,7 +46,7 @@
/*
* The High Precision Event Timer driver.
* This driver is closely modelled after the rtc.c driver.
- * http://www.intel.com/hardwaredesign/hpetspec.htm
+ * http://www.intel.com/hardwaredesign/hpetspec_1.pdf
*/
#define HPET_USER_FREQ (64)
#define HPET_DRIFT (500)
diff --git a/drivers/char/hvc_beat.c b/drivers/char/hvc_beat.c
index 91cdb35a920..0afc8b82212 100644
--- a/drivers/char/hvc_beat.c
+++ b/drivers/char/hvc_beat.c
@@ -44,7 +44,7 @@ static int hvc_beat_get_chars(uint32_t vtermno, char *buf, int cnt)
static unsigned char q[sizeof(unsigned long) * 2]
__attribute__((aligned(sizeof(unsigned long))));
static int qlen = 0;
- unsigned long got;
+ u64 got;
again:
if (qlen) {
@@ -63,7 +63,7 @@ again:
}
}
if (beat_get_term_char(vtermno, &got,
- ((unsigned long *)q), ((unsigned long *)q) + 1) == 0) {
+ ((u64 *)q), ((u64 *)q) + 1) == 0) {
qlen = got;
goto again;
}
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 5b819b12675..5a8a4c28c86 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -529,7 +529,7 @@ static void hvc_set_winsz(struct work_struct *work)
tty = tty_kref_get(hp->tty);
spin_unlock_irqrestore(&hp->lock, hvc_flags);
- tty_do_resize(tty, tty, &ws);
+ tty_do_resize(tty, &ws);
tty_kref_put(tty);
}
@@ -642,8 +642,11 @@ int hvc_poll(struct hvc_struct *hp)
/* Handle the SysRq Hack */
/* XXX should support a sequence */
if (buf[i] == '\x0f') { /* ^O */
- sysrq_pressed = 1;
- continue;
+ /* if ^O is pressed again, reset
+ * sysrq_pressed and flip ^O char */
+ sysrq_pressed = !sysrq_pressed;
+ if (sysrq_pressed)
+ continue;
} else if (sysrq_pressed) {
handle_sysrq(buf[i], tty);
sysrq_pressed = 0;
@@ -689,11 +692,10 @@ EXPORT_SYMBOL_GPL(hvc_poll);
*/
void hvc_resize(struct hvc_struct *hp, struct winsize ws)
{
- if ((hp->ws.ws_row != ws.ws_row) || (hp->ws.ws_col != ws.ws_col)) {
- hp->ws = ws;
- schedule_work(&hp->tty_resize);
- }
+ hp->ws = ws;
+ schedule_work(&hp->tty_resize);
}
+EXPORT_SYMBOL_GPL(hvc_resize);
/*
* This kthread is either polling or interrupt driven. This is determined by
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h
index 8297dbc2e6e..3c85d78c975 100644
--- a/drivers/char/hvc_console.h
+++ b/drivers/char/hvc_console.h
@@ -48,7 +48,7 @@ struct hvc_struct {
spinlock_t lock;
int index;
struct tty_struct *tty;
- unsigned int count;
+ int count;
int do_wakeup;
char *outbuf;
int outbuf_size;
diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c
index b74a2f8ab90..449727b6166 100644
--- a/drivers/char/hvc_iseries.c
+++ b/drivers/char/hvc_iseries.c
@@ -575,8 +575,10 @@ static int __init hvc_find_vtys(void)
* of console adapters.
*/
if ((num_found >= MAX_NR_HVC_CONSOLES) ||
- (num_found >= VTTY_PORTS))
+ (num_found >= VTTY_PORTS)) {
+ of_node_put(vty);
break;
+ }
vtermno = of_get_property(vty, "reg", NULL);
if (!vtermno)
diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c
new file mode 100644
index 00000000000..5ea7d7713fc
--- /dev/null
+++ b/drivers/char/hvc_iucv.c
@@ -0,0 +1,850 @@
+/*
+ * hvc_iucv.c - z/VM IUCV back-end for the Hypervisor Console (HVC)
+ *
+ * This back-end for HVC provides terminal access via
+ * z/VM IUCV communication paths.
+ *
+ * Copyright IBM Corp. 2008.
+ *
+ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+ */
+#define KMSG_COMPONENT "hvc_iucv"
+
+#include <linux/types.h>
+#include <asm/ebcdic.h>
+#include <linux/mempool.h>
+#include <linux/module.h>
+#include <linux/tty.h>
+#include <net/iucv/iucv.h>
+
+#include "hvc_console.h"
+
+
+/* HVC backend for z/VM IUCV */
+#define HVC_IUCV_MAGIC 0xc9e4c3e5
+#define MAX_HVC_IUCV_LINES HVC_ALLOC_TTY_ADAPTERS
+#define MEMPOOL_MIN_NR (PAGE_SIZE / sizeof(struct iucv_tty_buffer)/4)
+
+/* IUCV TTY message */
+#define MSG_VERSION 0x02 /* Message version */
+#define MSG_TYPE_ERROR 0x01 /* Error message */
+#define MSG_TYPE_TERMENV 0x02 /* Terminal environment variable */
+#define MSG_TYPE_TERMIOS 0x04 /* Terminal IO struct update */
+#define MSG_TYPE_WINSIZE 0x08 /* Terminal window size update */
+#define MSG_TYPE_DATA 0x10 /* Terminal data */
+
+#define MSG_SIZE(s) ((s) + offsetof(struct iucv_tty_msg, data))
+struct iucv_tty_msg {
+ u8 version; /* Message version */
+ u8 type; /* Message type */
+#define MSG_MAX_DATALEN (~(u16)0)
+ u16 datalen; /* Payload length */
+ u8 data[]; /* Payload buffer */
+} __attribute__((packed));
+
+enum iucv_state_t {
+ IUCV_DISCONN = 0,
+ IUCV_CONNECTED = 1,
+ IUCV_SEVERED = 2,
+};
+
+enum tty_state_t {
+ TTY_CLOSED = 0,
+ TTY_OPENED = 1,
+};
+
+struct hvc_iucv_private {
+ struct hvc_struct *hvc; /* HVC console struct reference */
+ u8 srv_name[8]; /* IUCV service name (ebcdic) */
+ enum iucv_state_t iucv_state; /* IUCV connection status */
+ enum tty_state_t tty_state; /* TTY status */
+ struct iucv_path *path; /* IUCV path pointer */
+ spinlock_t lock; /* hvc_iucv_private lock */
+ struct list_head tty_outqueue; /* outgoing IUCV messages */
+ struct list_head tty_inqueue; /* incoming IUCV messages */
+};
+
+struct iucv_tty_buffer {
+ struct list_head list; /* list pointer */
+ struct iucv_message msg; /* store an incoming IUCV message */
+ size_t offset; /* data buffer offset */
+ struct iucv_tty_msg *mbuf; /* buffer to store input/output data */
+};
+
+/* IUCV callback handler */
+static int hvc_iucv_path_pending(struct iucv_path *, u8[8], u8[16]);
+static void hvc_iucv_path_severed(struct iucv_path *, u8[16]);
+static void hvc_iucv_msg_pending(struct iucv_path *, struct iucv_message *);
+static void hvc_iucv_msg_complete(struct iucv_path *, struct iucv_message *);
+
+
+/* Kernel module parameters */
+static unsigned long hvc_iucv_devices;
+
+/* Array of allocated hvc iucv tty lines... */
+static struct hvc_iucv_private *hvc_iucv_table[MAX_HVC_IUCV_LINES];
+
+/* Kmem cache and mempool for iucv_tty_buffer elements */
+static struct kmem_cache *hvc_iucv_buffer_cache;
+static mempool_t *hvc_iucv_mempool;
+
+/* IUCV handler callback functions */
+static struct iucv_handler hvc_iucv_handler = {
+ .path_pending = hvc_iucv_path_pending,
+ .path_severed = hvc_iucv_path_severed,
+ .message_complete = hvc_iucv_msg_complete,
+ .message_pending = hvc_iucv_msg_pending,
+};
+
+
+/**
+ * hvc_iucv_get_private() - Return a struct hvc_iucv_private instance.
+ * @num: The HVC virtual terminal number (vtermno)
+ *
+ * This function returns the struct hvc_iucv_private instance that corresponds
+ * to the HVC virtual terminal number specified as parameter @num.
+ */
+struct hvc_iucv_private *hvc_iucv_get_private(uint32_t num)
+{
+ if ((num < HVC_IUCV_MAGIC) || (num - HVC_IUCV_MAGIC > hvc_iucv_devices))
+ return NULL;
+ return hvc_iucv_table[num - HVC_IUCV_MAGIC];
+}
+
+/**
+ * alloc_tty_buffer() - Returns a new struct iucv_tty_buffer element.
+ * @size: Size of the internal buffer used to store data.
+ * @flags: Memory allocation flags passed to mempool.
+ *
+ * This function allocates a new struct iucv_tty_buffer element and, optionally,
+ * allocates an internal data buffer with the specified size @size.
+ * Note: The total message size arises from the internal buffer size and the
+ * members of the iucv_tty_msg structure.
+ *
+ * The function returns NULL if memory allocation has failed.
+ */
+static struct iucv_tty_buffer *alloc_tty_buffer(size_t size, gfp_t flags)
+{
+ struct iucv_tty_buffer *bufp;
+
+ bufp = mempool_alloc(hvc_iucv_mempool, flags);
+ if (!bufp)
+ return NULL;
+ memset(bufp, 0, sizeof(struct iucv_tty_buffer));
+
+ if (size > 0) {
+ bufp->msg.length = MSG_SIZE(size);
+ bufp->mbuf = kmalloc(bufp->msg.length, flags);
+ if (!bufp->mbuf) {
+ mempool_free(bufp, hvc_iucv_mempool);
+ return NULL;
+ }
+ bufp->mbuf->version = MSG_VERSION;
+ bufp->mbuf->type = MSG_TYPE_DATA;
+ bufp->mbuf->datalen = (u16) size;
+ }
+ return bufp;
+}
+
+/**
+ * destroy_tty_buffer() - destroy struct iucv_tty_buffer element.
+ * @bufp: Pointer to a struct iucv_tty_buffer element, SHALL NOT be NULL.
+ *
+ * The destroy_tty_buffer() function frees the internal data buffer and returns
+ * the struct iucv_tty_buffer element back to the mempool for freeing.
+ */
+static void destroy_tty_buffer(struct iucv_tty_buffer *bufp)
+{
+ kfree(bufp->mbuf);
+ mempool_free(bufp, hvc_iucv_mempool);
+}
+
+/**
+ * destroy_tty_buffer_list() - call destroy_tty_buffer() for each list element.
+ * @list: List head pointer to a list containing struct iucv_tty_buffer
+ * elements.
+ *
+ * Calls destroy_tty_buffer() for each struct iucv_tty_buffer element in the
+ * list @list.
+ */
+static void destroy_tty_buffer_list(struct list_head *list)
+{
+ struct iucv_tty_buffer *ent, *next;
+
+ list_for_each_entry_safe(ent, next, list, list) {
+ list_del(&ent->list);
+ destroy_tty_buffer(ent);
+ }
+}
+
+/**
+ * hvc_iucv_write() - Receive IUCV message write data to HVC console buffer.
+ * @priv: Pointer to hvc_iucv_private structure.
+ * @buf: HVC console buffer for writing received terminal data.
+ * @count: HVC console buffer size.
+ * @has_more_data: Pointer to an int variable.
+ *
+ * The function picks up pending messages from the input queue and receives
+ * the message data that is then written to the specified buffer @buf.
+ * If the buffer size @count is less than the data message size, then the
+ * message is kept on the input queue and @has_more_data is set to 1.
+ * If the message data has been entirely written, the message is removed from
+ * the input queue.
+ *
+ * The function returns the number of bytes written to the terminal, zero if
+ * there are no pending data messages available or if there is no established
+ * IUCV path.
+ * If the IUCV path has been severed, then -EPIPE is returned to cause a
+ * hang up (that is issued by the HVC console layer).
+ */
+static int hvc_iucv_write(struct hvc_iucv_private *priv,
+ char *buf, int count, int *has_more_data)
+{
+ struct iucv_tty_buffer *rb;
+ int written;
+ int rc;
+
+ /* Immediately return if there is no IUCV connection */
+ if (priv->iucv_state == IUCV_DISCONN)
+ return 0;
+
+ /* If the IUCV path has been severed, return -EPIPE to inform the
+ * hvc console layer to hang up the tty device. */
+ if (priv->iucv_state == IUCV_SEVERED)
+ return -EPIPE;
+
+ /* check if there are pending messages */
+ if (list_empty(&priv->tty_inqueue))
+ return 0;
+
+ /* receive a iucv message and flip data to the tty (ldisc) */
+ rb = list_first_entry(&priv->tty_inqueue, struct iucv_tty_buffer, list);
+
+ written = 0;
+ if (!rb->mbuf) { /* message not yet received ... */
+ /* allocate mem to store msg data; if no memory is available
+ * then leave the buffer on the list and re-try later */
+ rb->mbuf = kmalloc(rb->msg.length, GFP_ATOMIC);
+ if (!rb->mbuf)
+ return -ENOMEM;
+
+ rc = __iucv_message_receive(priv->path, &rb->msg, 0,
+ rb->mbuf, rb->msg.length, NULL);
+ switch (rc) {
+ case 0: /* Successful */
+ break;
+ case 2: /* No message found */
+ case 9: /* Message purged */
+ break;
+ default:
+ written = -EIO;
+ }
+ /* remove buffer if an error has occured or received data
+ * is not correct */
+ if (rc || (rb->mbuf->version != MSG_VERSION) ||
+ (rb->msg.length != MSG_SIZE(rb->mbuf->datalen)))
+ goto out_remove_buffer;
+ }
+
+ switch (rb->mbuf->type) {
+ case MSG_TYPE_DATA:
+ written = min_t(int, rb->mbuf->datalen - rb->offset, count);
+ memcpy(buf, rb->mbuf->data + rb->offset, written);
+ if (written < (rb->mbuf->datalen - rb->offset)) {
+ rb->offset += written;
+ *has_more_data = 1;
+ goto out_written;
+ }
+ break;
+
+ case MSG_TYPE_WINSIZE:
+ if (rb->mbuf->datalen != sizeof(struct winsize))
+ break;
+ hvc_resize(priv->hvc, *((struct winsize *)rb->mbuf->data));
+ break;
+
+ case MSG_TYPE_ERROR: /* ignored ... */
+ case MSG_TYPE_TERMENV: /* ignored ... */
+ case MSG_TYPE_TERMIOS: /* ignored ... */
+ break;
+ }
+
+out_remove_buffer:
+ list_del(&rb->list);
+ destroy_tty_buffer(rb);
+ *has_more_data = !list_empty(&priv->tty_inqueue);
+
+out_written:
+ return written;
+}
+
+/**
+ * hvc_iucv_get_chars() - HVC get_chars operation.
+ * @vtermno: HVC virtual terminal number.
+ * @buf: Pointer to a buffer to store data
+ * @count: Size of buffer available for writing
+ *
+ * The hvc_console thread calls this method to read characters from
+ * the terminal backend. If an IUCV communication path has been established,
+ * pending IUCV messages are received and data is copied into buffer @buf
+ * up to @count bytes.
+ *
+ * Locking: The routine gets called under an irqsave() spinlock; and
+ * the routine locks the struct hvc_iucv_private->lock to call
+ * helper functions.
+ */
+static int hvc_iucv_get_chars(uint32_t vtermno, char *buf, int count)
+{
+ struct hvc_iucv_private *priv = hvc_iucv_get_private(vtermno);
+ int written;
+ int has_more_data;
+
+ if (count <= 0)
+ return 0;
+
+ if (!priv)
+ return -ENODEV;
+
+ spin_lock(&priv->lock);
+ has_more_data = 0;
+ written = hvc_iucv_write(priv, buf, count, &has_more_data);
+ spin_unlock(&priv->lock);
+
+ /* if there are still messages on the queue... schedule another run */
+ if (has_more_data)
+ hvc_kick();
+
+ return written;
+}
+
+/**
+ * hvc_iucv_send() - Send an IUCV message containing terminal data.
+ * @priv: Pointer to struct hvc_iucv_private instance.
+ * @buf: Buffer containing data to send.
+ * @size: Size of buffer and amount of data to send.
+ *
+ * If an IUCV communication path is established, the function copies the buffer
+ * data to a newly allocated struct iucv_tty_buffer element, sends the data and
+ * puts the element to the outqueue.
+ *
+ * If there is no IUCV communication path established, the function returns 0.
+ * If an existing IUCV communicaton path has been severed, the function returns
+ * -EPIPE (can be passed to HVC layer to cause a tty hangup).
+ */
+static int hvc_iucv_send(struct hvc_iucv_private *priv, const char *buf,
+ int count)
+{
+ struct iucv_tty_buffer *sb;
+ int rc;
+ u16 len;
+
+ if (priv->iucv_state == IUCV_SEVERED)
+ return -EPIPE;
+
+ if (priv->iucv_state == IUCV_DISCONN)
+ return 0;
+
+ len = min_t(u16, MSG_MAX_DATALEN, count);
+
+ /* allocate internal buffer to store msg data and also compute total
+ * message length */
+ sb = alloc_tty_buffer(len, GFP_ATOMIC);
+ if (!sb)
+ return -ENOMEM;
+
+ sb->mbuf->datalen = len;
+ memcpy(sb->mbuf->data, buf, len);
+
+ list_add_tail(&sb->list, &priv->tty_outqueue);
+
+ rc = __iucv_message_send(priv->path, &sb->msg, 0, 0,
+ (void *) sb->mbuf, sb->msg.length);
+ if (rc) {
+ list_del(&sb->list);
+ destroy_tty_buffer(sb);
+ len = 0;
+ }
+
+ return len;
+}
+
+/**
+ * hvc_iucv_put_chars() - HVC put_chars operation.
+ * @vtermno: HVC virtual terminal number.
+ * @buf: Pointer to an buffer to read data from
+ * @count: Size of buffer available for reading
+ *
+ * The hvc_console thread calls this method to write characters from
+ * to the terminal backend.
+ * The function calls hvc_iucv_send() under the lock of the
+ * struct hvc_iucv_private instance that corresponds to the tty @vtermno.
+ *
+ * Locking: The method gets called under an irqsave() spinlock; and
+ * locks struct hvc_iucv_private->lock.
+ */
+static int hvc_iucv_put_chars(uint32_t vtermno, const char *buf, int count)
+{
+ struct hvc_iucv_private *priv = hvc_iucv_get_private(vtermno);
+ int sent;
+
+ if (count <= 0)
+ return 0;
+
+ if (!priv)
+ return -ENODEV;
+
+ spin_lock(&priv->lock);
+ sent = hvc_iucv_send(priv, buf, count);
+ spin_unlock(&priv->lock);
+
+ return sent;
+}
+
+/**
+ * hvc_iucv_notifier_add() - HVC notifier for opening a TTY for the first time.
+ * @hp: Pointer to the HVC device (struct hvc_struct)
+ * @id: Additional data (originally passed to hvc_alloc): the index of an struct
+ * hvc_iucv_private instance.
+ *
+ * The function sets the tty state to TTY_OPEN for the struct hvc_iucv_private
+ * instance that is derived from @id. Always returns 0.
+ *
+ * Locking: struct hvc_iucv_private->lock, spin_lock_bh
+ */
+static int hvc_iucv_notifier_add(struct hvc_struct *hp, int id)
+{
+ struct hvc_iucv_private *priv;
+
+ priv = hvc_iucv_get_private(id);
+ if (!priv)
+ return 0;
+
+ spin_lock_bh(&priv->lock);
+ priv->tty_state = TTY_OPENED;
+ spin_unlock_bh(&priv->lock);
+
+ return 0;
+}
+
+/**
+ * hvc_iucv_cleanup() - Clean up function if the tty portion is finally closed.
+ * @priv: Pointer to the struct hvc_iucv_private instance.
+ *
+ * The functions severs the established IUCV communication path (if any), and
+ * destroy struct iucv_tty_buffer elements from the in- and outqueue. Finally,
+ * the functions resets the states to TTY_CLOSED and IUCV_DISCONN.
+ */
+static void hvc_iucv_cleanup(struct hvc_iucv_private *priv)
+{
+ destroy_tty_buffer_list(&priv->tty_outqueue);
+ destroy_tty_buffer_list(&priv->tty_inqueue);
+
+ priv->tty_state = TTY_CLOSED;
+ priv->iucv_state = IUCV_DISCONN;
+}
+
+/**
+ * hvc_iucv_notifier_hangup() - HVC notifier for tty hangups.
+ * @hp: Pointer to the HVC device (struct hvc_struct)
+ * @id: Additional data (originally passed to hvc_alloc): the index of an struct
+ * hvc_iucv_private instance.
+ *
+ * This routine notifies the HVC backend that a tty hangup (carrier loss,
+ * virtual or otherwise) has occured.
+ *
+ * The HVC backend for z/VM IUCV ignores virtual hangups (vhangup()), to keep
+ * an existing IUCV communication path established.
+ * (Background: vhangup() is called from user space (by getty or login) to
+ * disable writing to the tty by other applications).
+ *
+ * If the tty has been opened (e.g. getty) and an established IUCV path has been
+ * severed (we caused the tty hangup in that case), then the functions invokes
+ * hvc_iucv_cleanup() to clean up.
+ *
+ * Locking: struct hvc_iucv_private->lock
+ */
+static void hvc_iucv_notifier_hangup(struct hvc_struct *hp, int id)
+{
+ struct hvc_iucv_private *priv;
+
+ priv = hvc_iucv_get_private(id);
+ if (!priv)
+ return;
+
+ spin_lock_bh(&priv->lock);
+ /* NOTE: If the hangup was scheduled by ourself (from the iucv
+ * path_servered callback [IUCV_SEVERED]), then we have to
+ * finally clean up the tty backend structure and set state to
+ * TTY_CLOSED.
+ *
+ * If the tty was hung up otherwise (e.g. vhangup()), then we
+ * ignore this hangup and keep an established IUCV path open...
+ * (...the reason is that we are not able to connect back to the
+ * client if we disconnect on hang up) */
+ priv->tty_state = TTY_CLOSED;
+
+ if (priv->iucv_state == IUCV_SEVERED)
+ hvc_iucv_cleanup(priv);
+ spin_unlock_bh(&priv->lock);
+}
+
+/**
+ * hvc_iucv_notifier_del() - HVC notifier for closing a TTY for the last time.
+ * @hp: Pointer to the HVC device (struct hvc_struct)
+ * @id: Additional data (originally passed to hvc_alloc):
+ * the index of an struct hvc_iucv_private instance.
+ *
+ * This routine notifies the HVC backend that the last tty device file
+ * descriptor has been closed.
+ * The function calls hvc_iucv_cleanup() to clean up the struct hvc_iucv_private
+ * instance.
+ *
+ * Locking: struct hvc_iucv_private->lock
+ */
+static void hvc_iucv_notifier_del(struct hvc_struct *hp, int id)
+{
+ struct hvc_iucv_private *priv;
+ struct iucv_path *path;
+
+ priv = hvc_iucv_get_private(id);
+ if (!priv)
+ return;
+
+ spin_lock_bh(&priv->lock);
+ path = priv->path; /* save reference to IUCV path */
+ priv->path = NULL;
+ hvc_iucv_cleanup(priv);
+ spin_unlock_bh(&priv->lock);
+
+ /* sever IUCV path outside of priv->lock due to lock ordering of:
+ * priv->lock <--> iucv_table_lock */
+ if (path) {
+ iucv_path_sever(path, NULL);
+ iucv_path_free(path);
+ }
+}
+
+/**
+ * hvc_iucv_path_pending() - IUCV handler to process a connection request.
+ * @path: Pending path (struct iucv_path)
+ * @ipvmid: Originator z/VM system identifier
+ * @ipuser: User specified data for this path
+ * (AF_IUCV: port/service name and originator port)
+ *
+ * The function uses the @ipuser data to check to determine if the pending
+ * path belongs to a terminal managed by this HVC backend.
+ * If the check is successful, then an additional check is done to ensure
+ * that a terminal cannot be accessed multiple times (only one connection
+ * to a terminal is allowed). In that particular case, the pending path is
+ * severed. If it is the first connection, the pending path is accepted and
+ * associated to the struct hvc_iucv_private. The iucv state is updated to
+ * reflect that a communication path has been established.
+ *
+ * Returns 0 if the path belongs to a terminal managed by the this HVC backend;
+ * otherwise returns -ENODEV in order to dispatch this path to other handlers.
+ *
+ * Locking: struct hvc_iucv_private->lock
+ */
+static int hvc_iucv_path_pending(struct iucv_path *path,
+ u8 ipvmid[8], u8 ipuser[16])
+{
+ struct hvc_iucv_private *priv;
+ u8 nuser_data[16];
+ int i, rc;
+
+ priv = NULL;
+ for (i = 0; i < hvc_iucv_devices; i++)
+ if (hvc_iucv_table[i] &&
+ (0 == memcmp(hvc_iucv_table[i]->srv_name, ipuser, 8))) {
+ priv = hvc_iucv_table[i];
+ break;
+ }
+
+ if (!priv)
+ return -ENODEV;
+
+ spin_lock(&priv->lock);
+
+ /* If the terminal is already connected or being severed, then sever
+ * this path to enforce that there is only ONE established communication
+ * path per terminal. */
+ if (priv->iucv_state != IUCV_DISCONN) {
+ iucv_path_sever(path, ipuser);
+ iucv_path_free(path);
+ goto out_path_handled;
+ }
+
+ /* accept path */
+ memcpy(nuser_data, ipuser + 8, 8); /* remote service (for af_iucv) */
+ memcpy(nuser_data + 8, ipuser, 8); /* local service (for af_iucv) */
+ path->msglim = 0xffff; /* IUCV MSGLIMIT */
+ path->flags &= ~IUCV_IPRMDATA; /* TODO: use IUCV_IPRMDATA */
+ rc = iucv_path_accept(path, &hvc_iucv_handler, nuser_data, priv);
+ if (rc) {
+ iucv_path_sever(path, ipuser);
+ iucv_path_free(path);
+ goto out_path_handled;
+ }
+ priv->path = path;
+ priv->iucv_state = IUCV_CONNECTED;
+
+out_path_handled:
+ spin_unlock(&priv->lock);
+ return 0;
+}
+
+/**
+ * hvc_iucv_path_severed() - IUCV handler to process a path sever.
+ * @path: Pending path (struct iucv_path)
+ * @ipuser: User specified data for this path
+ * (AF_IUCV: port/service name and originator port)
+ *
+ * The function also severs the path (as required by the IUCV protocol) and
+ * sets the iucv state to IUCV_SEVERED for the associated struct
+ * hvc_iucv_private instance. Later, the IUCV_SEVERED state triggers a tty
+ * hangup (hvc_iucv_get_chars() / hvc_iucv_write()).
+ *
+ * If tty portion of the HVC is closed then clean up the outqueue in addition.
+ *
+ * Locking: struct hvc_iucv_private->lock
+ */
+static void hvc_iucv_path_severed(struct iucv_path *path, u8 ipuser[16])
+{
+ struct hvc_iucv_private *priv = path->private;
+
+ spin_lock(&priv->lock);
+ priv->iucv_state = IUCV_SEVERED;
+
+ /* NOTE: If the tty has not yet been opened by a getty program
+ * (e.g. to see console messages), then cleanup the
+ * hvc_iucv_private structure to allow re-connects.
+ *
+ * If the tty has been opened, the get_chars() callback returns
+ * -EPIPE to signal the hvc console layer to hang up the tty. */
+ priv->path = NULL;
+ if (priv->tty_state == TTY_CLOSED)
+ hvc_iucv_cleanup(priv);
+ spin_unlock(&priv->lock);
+
+ /* finally sever path (outside of priv->lock due to lock ordering) */
+ iucv_path_sever(path, ipuser);
+ iucv_path_free(path);
+}
+
+/**
+ * hvc_iucv_msg_pending() - IUCV handler to process an incoming IUCV message.
+ * @path: Pending path (struct iucv_path)
+ * @msg: Pointer to the IUCV message
+ *
+ * The function stores an incoming message on the input queue for later
+ * processing (by hvc_iucv_get_chars() / hvc_iucv_write()).
+ * However, if the tty has not yet been opened, the message is rejected.
+ *
+ * Locking: struct hvc_iucv_private->lock
+ */
+static void hvc_iucv_msg_pending(struct iucv_path *path,
+ struct iucv_message *msg)
+{
+ struct hvc_iucv_private *priv = path->private;
+ struct iucv_tty_buffer *rb;
+
+ spin_lock(&priv->lock);
+
+ /* reject messages if tty has not yet been opened */
+ if (priv->tty_state == TTY_CLOSED) {
+ iucv_message_reject(path, msg);
+ goto unlock_return;
+ }
+
+ /* allocate buffer an empty buffer element */
+ rb = alloc_tty_buffer(0, GFP_ATOMIC);
+ if (!rb) {
+ iucv_message_reject(path, msg);
+ goto unlock_return; /* -ENOMEM */
+ }
+ rb->msg = *msg;
+
+ list_add_tail(&rb->list, &priv->tty_inqueue);
+
+ hvc_kick(); /* wakup hvc console thread */
+
+unlock_return:
+ spin_unlock(&priv->lock);
+}
+
+/**
+ * hvc_iucv_msg_complete() - IUCV handler to process message completion
+ * @path: Pending path (struct iucv_path)
+ * @msg: Pointer to the IUCV message
+ *
+ * The function is called upon completion of message delivery and the
+ * message is removed from the outqueue. Additional delivery information
+ * can be found in msg->audit: rejected messages (0x040000 (IPADRJCT)) and
+ * purged messages (0x010000 (IPADPGNR)).
+ *
+ * Locking: struct hvc_iucv_private->lock
+ */
+static void hvc_iucv_msg_complete(struct iucv_path *path,
+ struct iucv_message *msg)
+{
+ struct hvc_iucv_private *priv = path->private;
+ struct iucv_tty_buffer *ent, *next;
+ LIST_HEAD(list_remove);
+
+ spin_lock(&priv->lock);
+ list_for_each_entry_safe(ent, next, &priv->tty_outqueue, list)
+ if (ent->msg.id == msg->id) {
+ list_move(&ent->list, &list_remove);
+ break;
+ }
+ spin_unlock(&priv->lock);
+ destroy_tty_buffer_list(&list_remove);
+}
+
+
+/* HVC operations */
+static struct hv_ops hvc_iucv_ops = {
+ .get_chars = hvc_iucv_get_chars,
+ .put_chars = hvc_iucv_put_chars,
+ .notifier_add = hvc_iucv_notifier_add,
+ .notifier_del = hvc_iucv_notifier_del,
+ .notifier_hangup = hvc_iucv_notifier_hangup,
+};
+
+/**
+ * hvc_iucv_alloc() - Allocates a new struct hvc_iucv_private instance
+ * @id: hvc_iucv_table index
+ *
+ * This function allocates a new hvc_iucv_private struct and put the
+ * instance into hvc_iucv_table at index @id.
+ * Returns 0 on success; otherwise non-zero.
+ */
+static int __init hvc_iucv_alloc(int id)
+{
+ struct hvc_iucv_private *priv;
+ char name[9];
+ int rc;
+
+ priv = kzalloc(sizeof(struct hvc_iucv_private), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ spin_lock_init(&priv->lock);
+ INIT_LIST_HEAD(&priv->tty_outqueue);
+ INIT_LIST_HEAD(&priv->tty_inqueue);
+
+ /* Finally allocate hvc */
+ priv->hvc = hvc_alloc(HVC_IUCV_MAGIC + id,
+ HVC_IUCV_MAGIC + id, &hvc_iucv_ops, PAGE_SIZE);
+ if (IS_ERR(priv->hvc)) {
+ rc = PTR_ERR(priv->hvc);
+ kfree(priv);
+ return rc;
+ }
+
+ /* setup iucv related information */
+ snprintf(name, 9, "ihvc%-4d", id);
+ memcpy(priv->srv_name, name, 8);
+ ASCEBC(priv->srv_name, 8);
+
+ hvc_iucv_table[id] = priv;
+ return 0;
+}
+
+/**
+ * hvc_iucv_init() - Initialization of HVC backend for z/VM IUCV
+ */
+static int __init hvc_iucv_init(void)
+{
+ int rc, i;
+
+ if (!MACHINE_IS_VM) {
+ pr_warning("The z/VM IUCV Hypervisor console cannot be "
+ "used without z/VM.\n");
+ return -ENODEV;
+ }
+
+ if (!hvc_iucv_devices)
+ return -ENODEV;
+
+ if (hvc_iucv_devices > MAX_HVC_IUCV_LINES)
+ return -EINVAL;
+
+ hvc_iucv_buffer_cache = kmem_cache_create(KMSG_COMPONENT,
+ sizeof(struct iucv_tty_buffer),
+ 0, 0, NULL);
+ if (!hvc_iucv_buffer_cache) {
+ pr_err("Not enough memory for driver initialization "
+ "(rs=%d).\n", 1);
+ return -ENOMEM;
+ }
+
+ hvc_iucv_mempool = mempool_create_slab_pool(MEMPOOL_MIN_NR,
+ hvc_iucv_buffer_cache);
+ if (!hvc_iucv_mempool) {
+ pr_err("Not enough memory for driver initialization "
+ "(rs=%d).\n", 2);
+ kmem_cache_destroy(hvc_iucv_buffer_cache);
+ return -ENOMEM;
+ }
+
+ /* allocate hvc_iucv_private structs */
+ for (i = 0; i < hvc_iucv_devices; i++) {
+ rc = hvc_iucv_alloc(i);
+ if (rc) {
+ pr_err("Could not create new z/VM IUCV HVC backend "
+ "rc=%d.\n", rc);
+ goto out_error_hvc;
+ }
+ }
+
+ /* register IUCV callback handler */
+ rc = iucv_register(&hvc_iucv_handler, 0);
+ if (rc) {
+ pr_err("Could not register iucv handler (rc=%d).\n", rc);
+ goto out_error_iucv;
+ }
+
+ return 0;
+
+out_error_iucv:
+ iucv_unregister(&hvc_iucv_handler, 0);
+out_error_hvc:
+ for (i = 0; i < hvc_iucv_devices; i++)
+ if (hvc_iucv_table[i]) {
+ if (hvc_iucv_table[i]->hvc)
+ hvc_remove(hvc_iucv_table[i]->hvc);
+ kfree(hvc_iucv_table[i]);
+ }
+ mempool_destroy(hvc_iucv_mempool);
+ kmem_cache_destroy(hvc_iucv_buffer_cache);
+ return rc;
+}
+
+/**
+ * hvc_iucv_console_init() - Early console initialization
+ */
+static int __init hvc_iucv_console_init(void)
+{
+ if (!MACHINE_IS_VM || !hvc_iucv_devices)
+ return -ENODEV;
+ return hvc_instantiate(HVC_IUCV_MAGIC, 0, &hvc_iucv_ops);
+}
+
+/**
+ * hvc_iucv_config() - Parsing of hvc_iucv= kernel command line parameter
+ * @val: Parameter value (numeric)
+ */
+static int __init hvc_iucv_config(char *val)
+{
+ return strict_strtoul(val, 10, &hvc_iucv_devices);
+}
+
+
+module_init(hvc_iucv_init);
+console_initcall(hvc_iucv_console_init);
+__setup("hvc_iucv=", hvc_iucv_config);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("HVC back-end for z/VM IUCV.");
+MODULE_AUTHOR("Hendrik Brueckner <brueckner@linux.vnet.ibm.com>");
diff --git a/drivers/char/hvc_udbg.c b/drivers/char/hvc_udbg.c
new file mode 100644
index 00000000000..bd63ba878a5
--- /dev/null
+++ b/drivers/char/hvc_udbg.c
@@ -0,0 +1,96 @@
+/*
+ * udbg interface to hvc_console.c
+ *
+ * (C) Copyright David Gibson, IBM Corporation 2008.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+
+#include <asm/udbg.h>
+
+#include "hvc_console.h"
+
+struct hvc_struct *hvc_udbg_dev;
+
+static int hvc_udbg_put(uint32_t vtermno, const char *buf, int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ udbg_putc(buf[i]);
+
+ return i;
+}
+
+static int hvc_udbg_get(uint32_t vtermno, char *buf, int count)
+{
+ int i, c;
+
+ if (!udbg_getc_poll)
+ return 0;
+
+ for (i = 0; i < count; i++) {
+ if ((c = udbg_getc_poll()) == -1)
+ break;
+ buf[i] = c;
+ }
+
+ return i;
+}
+
+static struct hv_ops hvc_udbg_ops = {
+ .get_chars = hvc_udbg_get,
+ .put_chars = hvc_udbg_put,
+};
+
+static int __init hvc_udbg_init(void)
+{
+ struct hvc_struct *hp;
+
+ BUG_ON(hvc_udbg_dev);
+
+ hp = hvc_alloc(0, NO_IRQ, &hvc_udbg_ops, 16);
+ if (IS_ERR(hp))
+ return PTR_ERR(hp);
+
+ hvc_udbg_dev = hp;
+
+ return 0;
+}
+module_init(hvc_udbg_init);
+
+static void __exit hvc_udbg_exit(void)
+{
+ if (hvc_udbg_dev)
+ hvc_remove(hvc_udbg_dev);
+}
+module_exit(hvc_udbg_exit);
+
+static int __init hvc_udbg_console_init(void)
+{
+ hvc_instantiate(0, 0, &hvc_udbg_ops);
+ add_preferred_console("hvc", 0, NULL);
+
+ return 0;
+}
+console_initcall(hvc_udbg_console_init);
diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c
index 019e0b58593..bd62dc86b47 100644
--- a/drivers/char/hvc_vio.c
+++ b/drivers/char/hvc_vio.c
@@ -153,8 +153,10 @@ static int hvc_find_vtys(void)
/* We have statically defined space for only a certain number
* of console adapters.
*/
- if (num_found >= MAX_NR_HVC_CONSOLES)
+ if (num_found >= MAX_NR_HVC_CONSOLES) {
+ of_node_put(vty);
break;
+ }
vtermno = of_get_property(vty, "reg", NULL);
if (!vtermno)
diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 473d9b14439..6e6eb445d37 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -269,7 +269,7 @@ struct hvcs_struct {
unsigned int index;
struct tty_struct *tty;
- unsigned int open_count;
+ int open_count;
/*
* Used to tell the driver kernel_thread what operations need to take
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index 59c6f9ab94e..406f8742a26 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -75,7 +75,7 @@ struct hvsi_struct {
spinlock_t lock;
int index;
struct tty_struct *tty;
- unsigned int count;
+ int count;
uint8_t throttle_buf[128];
uint8_t outbuf[N_OUTBUF]; /* to implement write_room and chars_in_buffer */
/* inbuf is for packet reassembly. leave a little room for leftovers. */
@@ -997,14 +997,14 @@ out:
static int hvsi_write_room(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
return N_OUTBUF - hp->n_outbuf;
}
static int hvsi_chars_in_buffer(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
return hp->n_outbuf;
}
@@ -1070,7 +1070,7 @@ out:
*/
static void hvsi_throttle(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
pr_debug("%s\n", __func__);
@@ -1079,7 +1079,7 @@ static void hvsi_throttle(struct tty_struct *tty)
static void hvsi_unthrottle(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
unsigned long flags;
int shouldflip = 0;
@@ -1100,7 +1100,7 @@ static void hvsi_unthrottle(struct tty_struct *tty)
static int hvsi_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
hvsi_get_mctrl(hp);
return hp->mctrl;
@@ -1109,7 +1109,7 @@ static int hvsi_tiocmget(struct tty_struct *tty, struct file *file)
static int hvsi_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
unsigned long flags;
uint16_t new_mctrl;
diff --git a/drivers/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c
index 8859aeac2d2..9b3e09cd41f 100644
--- a/drivers/char/hw_random/n2-drv.c
+++ b/drivers/char/hw_random/n2-drv.c
@@ -482,7 +482,7 @@ static void n2rng_dump_test_buffer(struct n2rng *np)
int i;
for (i = 0; i < SELFTEST_BUFFER_WORDS; i++)
- dev_err(&np->op->dev, "Test buffer slot %d [0x%016lx]\n",
+ dev_err(&np->op->dev, "Test buffer slot %d [0x%016llx]\n",
i, np->test_buffer[i]);
}
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index b60d425ce8d..fc8cf7ac7f2 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -485,7 +485,21 @@ static struct dmi_system_id __initdata i8k_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "MP061"),
},
},
- { }
+ {
+ .ident = "Dell Precision",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Precision"),
+ },
+ },
+ {
+ .ident = "Dell Vostro",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro"),
+ },
+ },
+ { }
};
/*
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 04e4549299b..24aa6e88e22 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -328,11 +328,13 @@ static inline void drop_rts(struct isi_port *port)
}
/* card->lock MUST NOT be held */
-static inline void raise_dtr_rts(struct isi_port *port)
+
+static void isicom_raise_dtr_rts(struct tty_port *port)
{
- struct isi_board *card = port->card;
+ struct isi_port *ip = container_of(port, struct isi_port, port);
+ struct isi_board *card = ip->card;
unsigned long base = card->base;
- u16 channel = port->channel;
+ u16 channel = ip->channel;
if (!lock_card(card))
return;
@@ -340,7 +342,7 @@ static inline void raise_dtr_rts(struct isi_port *port)
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0f04, base);
InterruptTheCard(base);
- port->status |= (ISI_DTR | ISI_RTS);
+ ip->status |= (ISI_DTR | ISI_RTS);
unlock_card(card);
}
@@ -830,80 +832,10 @@ static int isicom_setup_port(struct tty_struct *tty)
return 0;
}
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct isi_port *port)
+static int isicom_carrier_raised(struct tty_port *port)
{
- struct isi_board *card = port->card;
- int do_clocal = 0, retval;
- unsigned long flags;
- DECLARE_WAITQUEUE(wait, current);
-
- /* block if port is in the process of being closed */
-
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- pr_dbg("block_til_ready: close in progress.\n");
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- /* if non-blocking mode is set ... */
-
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- pr_dbg("block_til_ready: non-block mode.\n");
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (C_CLOCAL(tty))
- do_clocal = 1;
-
- /* block waiting for DCD to be asserted, and while
- callout dev is busy */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
- spin_lock_irqsave(&card->card_lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count--;
- port->port.blocked_open++;
- spin_unlock_irqrestore(&card->card_lock, flags);
-
- while (1) {
- raise_dtr_rts(port);
-
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (port->status & ISI_DCD))) {
- break;
- }
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- spin_lock_irqsave(&card->card_lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (retval)
- return retval;
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ struct isi_port *ip = container_of(port, struct isi_port, port);
+ return (ip->status & ISI_DCD)?1 : 0;
}
static int isicom_open(struct tty_struct *tty, struct file *filp)
@@ -932,12 +864,13 @@ static int isicom_open(struct tty_struct *tty, struct file *filp)
isicom_setup_board(card);
+ /* FIXME: locking on port.count etc */
port->port.count++;
tty->driver_data = port;
tty_port_tty_set(&port->port, tty);
error = isicom_setup_port(tty);
if (error == 0)
- error = block_til_ready(tty, filp, port);
+ error = tty_port_block_til_ready(&port->port, tty, filp);
return error;
}
@@ -1012,76 +945,30 @@ static void isicom_flush_buffer(struct tty_struct *tty)
static void isicom_close(struct tty_struct *tty, struct file *filp)
{
- struct isi_port *port = tty->driver_data;
+ struct isi_port *ip = tty->driver_data;
+ struct tty_port *port = &ip->port;
struct isi_board *card;
unsigned long flags;
- if (!port)
- return;
- card = port->card;
- if (isicom_paranoia_check(port, tty->name, "isicom_close"))
- return;
-
- pr_dbg("Close start!!!.\n");
-
- spin_lock_irqsave(&card->card_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- return;
- }
-
- if (tty->count == 1 && port->port.count != 1) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
- "count tty->count = 1 port count = %d.\n",
- card->base, port->port.count);
- port->port.count = 1;
- }
- if (--port->port.count < 0) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
- "count for channel%d = %d", card->base, port->channel,
- port->port.count);
- port->port.count = 0;
- }
+ BUG_ON(!ip);
- if (port->port.count) {
- spin_unlock_irqrestore(&card->card_lock, flags);
+ card = ip->card;
+ if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
return;
- }
- port->port.flags |= ASYNC_CLOSING;
- tty->closing = 1;
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, port->port.closing_wait);
/* indicate to the card that no more data can be received
on this port */
spin_lock_irqsave(&card->card_lock, flags);
- if (port->port.flags & ASYNC_INITIALIZED) {
- card->port_status &= ~(1 << port->channel);
+ if (port->flags & ASYNC_INITIALIZED) {
+ card->port_status &= ~(1 << ip->channel);
outw(card->port_status, card->base + 0x02);
}
- isicom_shutdown_port(port);
+ isicom_shutdown_port(ip);
spin_unlock_irqrestore(&card->card_lock, flags);
isicom_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- spin_lock_irqsave(&card->card_lock, flags);
- tty->closing = 0;
-
- if (port->port.blocked_open) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (port->port.close_delay) {
- pr_dbg("scheduling until time out.\n");
- msleep_interruptible(
- jiffies_to_msecs(port->port.close_delay));
- }
- spin_lock_irqsave(&card->card_lock, flags);
- wake_up_interruptible(&port->port.open_wait);
- }
- port->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
- wake_up_interruptible(&port->port.close_wait);
- spin_unlock_irqrestore(&card->card_lock, flags);
+
+ tty_port_close_end(port, tty);
}
/* write et all */
@@ -1420,10 +1307,7 @@ static void isicom_hangup(struct tty_struct *tty)
isicom_shutdown_port(port);
spin_unlock_irqrestore(&port->card->card_lock, flags);
- port->port.count = 0;
- port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- tty_port_tty_set(&port->port, NULL);
- wake_up_interruptible(&port->port.open_wait);
+ tty_port_hangup(&port->port);
}
@@ -1452,6 +1336,11 @@ static const struct tty_operations isicom_ops = {
.break_ctl = isicom_send_break,
};
+static const struct tty_port_operations isicom_port_ops = {
+ .carrier_raised = isicom_carrier_raised,
+ .raise_dtr_rts = isicom_raise_dtr_rts,
+};
+
static int __devinit reset_card(struct pci_dev *pdev,
const unsigned int card, unsigned int *signature)
{
@@ -1794,6 +1683,7 @@ static int __init isicom_init(void)
spin_lock_init(&isi_card[idx].card_lock);
for (channel = 0; channel < 16; channel++, port++) {
tty_port_init(&port->port);
+ port->port.ops = &isicom_port_ops;
port->magic = ISICOM_MAGIC;
port->card = &isi_card[idx];
port->channel = channel;
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 4b10770fa93..5c3dc6b8411 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -151,7 +151,7 @@ static char *stli_drvversion = "5.6.0";
static char *stli_serialname = "ttyE";
static struct tty_driver *stli_serial;
-
+static const struct tty_port_operations stli_port_ops;
#define STLI_TXBUFSIZE 4096
@@ -626,8 +626,6 @@ static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp);
static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
-static int stli_waitcarrier(struct tty_struct *tty, struct stlibrd *brdp,
- struct stliport *portp, struct file *filp);
static int stli_setport(struct tty_struct *tty);
static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
@@ -769,7 +767,7 @@ static int stli_parsebrd(struct stlconf *confp, char **argp)
break;
}
if (i == ARRAY_SIZE(stli_brdstr)) {
- printk("STALLION: unknown board name, %s?\n", argp[0]);
+ printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]);
return 0;
}
@@ -787,6 +785,7 @@ static int stli_open(struct tty_struct *tty, struct file *filp)
{
struct stlibrd *brdp;
struct stliport *portp;
+ struct tty_port *port;
unsigned int minordev, brdnr, portnr;
int rc;
@@ -808,30 +807,19 @@ static int stli_open(struct tty_struct *tty, struct file *filp)
return -ENODEV;
if (portp->devnr < 1)
return -ENODEV;
-
-
-/*
- * Check if this port is in the middle of closing. If so then wait
- * until it is closed then return error status based on flag settings.
- * The sleep here does not need interrupt protection since the wakeup
- * for it is done with the same context.
- */
- if (portp->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&portp->port.close_wait);
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- return -ERESTARTSYS;
- }
+ port = &portp->port;
/*
* On the first open of the device setup the port hardware, and
* initialize the per port data structure. Since initializing the port
* requires several commands to the board we will need to wait for any
* other open that is already initializing the port.
+ *
+ * Review - locking
*/
- tty_port_tty_set(&portp->port, tty);
+ tty_port_tty_set(port, tty);
tty->driver_data = portp;
- portp->port.count++;
+ port->count++;
wait_event_interruptible(portp->raw_wait,
!test_bit(ST_INITIALIZING, &portp->state));
@@ -841,7 +829,8 @@ static int stli_open(struct tty_struct *tty, struct file *filp)
if ((portp->port.flags & ASYNC_INITIALIZED) == 0) {
set_bit(ST_INITIALIZING, &portp->state);
if ((rc = stli_initopen(tty, brdp, portp)) >= 0) {
- portp->port.flags |= ASYNC_INITIALIZED;
+ /* Locking */
+ port->flags |= ASYNC_INITIALIZED;
clear_bit(TTY_IO_ERROR, &tty->flags);
}
clear_bit(ST_INITIALIZING, &portp->state);
@@ -849,31 +838,7 @@ static int stli_open(struct tty_struct *tty, struct file *filp)
if (rc < 0)
return rc;
}
-
-/*
- * Check if this port is in the middle of closing. If so then wait
- * until it is closed then return error status, based on flag settings.
- * The sleep here does not need interrupt protection since the wakeup
- * for it is done with the same context.
- */
- if (portp->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&portp->port.close_wait);
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- return -ERESTARTSYS;
- }
-
-/*
- * Based on type of open being done check if it can overlap with any
- * previous opens still in effect. If we are a normal serial device
- * then also we might have to wait for carrier.
- */
- if (!(filp->f_flags & O_NONBLOCK)) {
- if ((rc = stli_waitcarrier(tty, brdp, portp, filp)) != 0)
- return rc;
- }
- portp->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ return tty_port_block_til_ready(&portp->port, tty, filp);
}
/*****************************************************************************/
@@ -882,25 +847,16 @@ static void stli_close(struct tty_struct *tty, struct file *filp)
{
struct stlibrd *brdp;
struct stliport *portp;
+ struct tty_port *port;
unsigned long flags;
portp = tty->driver_data;
if (portp == NULL)
return;
+ port = &portp->port;
- spin_lock_irqsave(&stli_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&stli_lock, flags);
- return;
- }
- if ((tty->count == 1) && (portp->port.count != 1))
- portp->port.count = 1;
- if (portp->port.count-- > 1) {
- spin_unlock_irqrestore(&stli_lock, flags);
+ if (tty_port_close_start(port, tty, filp) == 0)
return;
- }
-
- portp->port.flags |= ASYNC_CLOSING;
/*
* May want to wait for data to drain before closing. The BUSY flag
@@ -908,15 +864,19 @@ static void stli_close(struct tty_struct *tty, struct file *filp)
* updated by messages from the slave - indicating when all chars
* really have drained.
*/
+ spin_lock_irqsave(&stli_lock, flags);
if (tty == stli_txcooktty)
stli_flushchars(tty);
- tty->closing = 1;
spin_unlock_irqrestore(&stli_lock, flags);
+ /* We end up doing this twice for the moment. This needs looking at
+ eventually. Note we still use portp->closing_wait as a result */
if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, portp->closing_wait);
- portp->port.flags &= ~ASYNC_INITIALIZED;
+ /* FIXME: port locking here needs attending to */
+ port->flags &= ~ASYNC_INITIALIZED;
+
brdp = stli_brds[portp->brdnr];
stli_rawclose(brdp, portp, 0, 0);
if (tty->termios->c_cflag & HUPCL) {
@@ -934,17 +894,8 @@ static void stli_close(struct tty_struct *tty, struct file *filp)
set_bit(ST_DOFLUSHRX, &portp->state);
stli_flushbuffer(tty);
- tty->closing = 0;
- tty_port_tty_set(&portp->port, NULL);
-
- if (portp->openwaitcnt) {
- if (portp->close_delay)
- msleep_interruptible(jiffies_to_msecs(portp->close_delay));
- wake_up_interruptible(&portp->port.open_wait);
- }
-
- portp->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&portp->port.close_wait);
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
}
/*****************************************************************************/
@@ -1183,62 +1134,23 @@ static int stli_setport(struct tty_struct *tty)
/*****************************************************************************/
-/*
- * Possibly need to wait for carrier (DCD signal) to come high. Say
- * maybe because if we are clocal then we don't need to wait...
- */
-
-static int stli_waitcarrier(struct tty_struct *tty, struct stlibrd *brdp,
- struct stliport *portp, struct file *filp)
+static int stli_carrier_raised(struct tty_port *port)
{
- unsigned long flags;
- int rc, doclocal;
-
- rc = 0;
- doclocal = 0;
-
- if (tty->termios->c_cflag & CLOCAL)
- doclocal++;
-
- spin_lock_irqsave(&stli_lock, flags);
- portp->openwaitcnt++;
- if (! tty_hung_up_p(filp))
- portp->port.count--;
- spin_unlock_irqrestore(&stli_lock, flags);
-
- for (;;) {
- stli_mkasysigs(&portp->asig, 1, 1);
- if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
- &portp->asig, sizeof(asysigs_t), 0)) < 0)
- break;
- if (tty_hung_up_p(filp) ||
- ((portp->port.flags & ASYNC_INITIALIZED) == 0)) {
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- rc = -EBUSY;
- else
- rc = -ERESTARTSYS;
- break;
- }
- if (((portp->port.flags & ASYNC_CLOSING) == 0) &&
- (doclocal || (portp->sigs & TIOCM_CD))) {
- break;
- }
- if (signal_pending(current)) {
- rc = -ERESTARTSYS;
- break;
- }
- interruptible_sleep_on(&portp->port.open_wait);
- }
-
- spin_lock_irqsave(&stli_lock, flags);
- if (! tty_hung_up_p(filp))
- portp->port.count++;
- portp->openwaitcnt--;
- spin_unlock_irqrestore(&stli_lock, flags);
+ struct stliport *portp = container_of(port, struct stliport, port);
+ return (portp->sigs & TIOCM_CD) ? 1 : 0;
+}
- return rc;
+static void stli_raise_dtr_rts(struct tty_port *port)
+{
+ struct stliport *portp = container_of(port, struct stliport, port);
+ struct stlibrd *brdp = stli_brds[portp->brdnr];
+ stli_mkasysigs(&portp->asig, 1, 1);
+ if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
+ sizeof(asysigs_t), 0) < 0)
+ printk(KERN_WARNING "istallion: dtr raise failed.\n");
}
+
/*****************************************************************************/
/*
@@ -1550,7 +1462,7 @@ static int stli_getserial(struct stliport *portp, struct serial_struct __user *s
sio.irq = 0;
sio.flags = portp->port.flags;
sio.baud_base = portp->baud_base;
- sio.close_delay = portp->close_delay;
+ sio.close_delay = portp->port.close_delay;
sio.closing_wait = portp->closing_wait;
sio.custom_divisor = portp->custom_divisor;
sio.xmit_fifo_size = 0;
@@ -1582,7 +1494,7 @@ static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *s
return -EFAULT;
if (!capable(CAP_SYS_ADMIN)) {
if ((sio.baud_base != portp->baud_base) ||
- (sio.close_delay != portp->close_delay) ||
+ (sio.close_delay != portp->port.close_delay) ||
((sio.flags & ~ASYNC_USR_MASK) !=
(portp->port.flags & ~ASYNC_USR_MASK)))
return -EPERM;
@@ -1591,7 +1503,7 @@ static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *s
portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) |
(sio.flags & ASYNC_USR_MASK);
portp->baud_base = sio.baud_base;
- portp->close_delay = sio.close_delay;
+ portp->port.close_delay = sio.close_delay;
portp->closing_wait = sio.closing_wait;
portp->custom_divisor = sio.custom_divisor;
@@ -1821,6 +1733,7 @@ static void stli_hangup(struct tty_struct *tty)
{
struct stliport *portp;
struct stlibrd *brdp;
+ struct tty_port *port;
unsigned long flags;
portp = tty->driver_data;
@@ -1831,8 +1744,11 @@ static void stli_hangup(struct tty_struct *tty)
brdp = stli_brds[portp->brdnr];
if (brdp == NULL)
return;
+ port = &portp->port;
- portp->port.flags &= ~ASYNC_INITIALIZED;
+ spin_lock_irqsave(&port->lock, flags);
+ port->flags &= ~ASYNC_INITIALIZED;
+ spin_unlock_irqrestore(&port->lock, flags);
if (!test_bit(ST_CLOSING, &portp->state))
stli_rawclose(brdp, portp, 0, 0);
@@ -1853,12 +1769,9 @@ static void stli_hangup(struct tty_struct *tty)
clear_bit(ST_TXBUSY, &portp->state);
clear_bit(ST_RXSTOP, &portp->state);
set_bit(TTY_IO_ERROR, &tty->flags);
- tty_port_tty_set(&portp->port, NULL);
- portp->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- portp->port.count = 0;
spin_unlock_irqrestore(&stli_lock, flags);
- wake_up_interruptible(&portp->port.open_wait);
+ tty_port_hangup(port);
}
/*****************************************************************************/
@@ -2132,7 +2045,7 @@ static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigne
unsigned char __iomem *bits;
if (test_bit(ST_CMDING, &portp->state)) {
- printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
+ printk(KERN_ERR "istallion: command already busy, cmd=%x!\n",
(int) cmd);
return;
}
@@ -2692,16 +2605,17 @@ static int stli_initports(struct stlibrd *brdp)
for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
if (!portp) {
- printk("STALLION: failed to allocate port structure\n");
+ printk(KERN_WARNING "istallion: failed to allocate port structure\n");
continue;
}
tty_port_init(&portp->port);
+ portp->port.ops = &stli_port_ops;
portp->magic = STLI_PORTMAGIC;
portp->portnr = i;
portp->brdnr = brdp->brdnr;
portp->panelnr = panelnr;
portp->baud_base = STL_BAUDBASE;
- portp->close_delay = STL_CLOSEDELAY;
+ portp->port.close_delay = STL_CLOSEDELAY;
portp->closing_wait = 30 * HZ;
init_waitqueue_head(&portp->port.open_wait);
init_waitqueue_head(&portp->port.close_wait);
@@ -2758,7 +2672,7 @@ static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offse
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2832,7 +2746,7 @@ static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long off
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2884,7 +2798,7 @@ static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long off
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2929,7 +2843,7 @@ static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long of
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), board=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2994,7 +2908,7 @@ static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offse
void __iomem *ptr;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -3060,7 +2974,7 @@ static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offs
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -3499,7 +3413,7 @@ static int stli_startbrd(struct stlibrd *brdp)
#endif
if (nrdevs < (brdp->nrports + 1)) {
- printk(KERN_ERR "STALLION: slave failed to allocate memory for "
+ printk(KERN_ERR "istallion: slave failed to allocate memory for "
"all devices, devices=%d\n", nrdevs);
brdp->nrports = nrdevs - 1;
}
@@ -3509,13 +3423,13 @@ static int stli_startbrd(struct stlibrd *brdp)
brdp->bitsize = (nrdevs + 7) / 8;
memoff = readl(&hdrp->memp);
if (memoff > brdp->memsize) {
- printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
+ printk(KERN_ERR "istallion: corrupted shared memory region?\n");
rc = -EIO;
goto stli_donestartup;
}
memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
if (readw(&memp->dtype) != TYP_ASYNCTRL) {
- printk(KERN_ERR "STALLION: no slave control device found\n");
+ printk(KERN_ERR "istallion: no slave control device found\n");
goto stli_donestartup;
}
memp++;
@@ -3600,7 +3514,7 @@ static int __devinit stli_brdinit(struct stlibrd *brdp)
retval = stli_initonb(brdp);
break;
default:
- printk(KERN_ERR "STALLION: board=%d is unknown board "
+ printk(KERN_ERR "istallion: board=%d is unknown board "
"type=%d\n", brdp->brdnr, brdp->brdtype);
retval = -ENODEV;
}
@@ -3609,7 +3523,7 @@ static int __devinit stli_brdinit(struct stlibrd *brdp)
return retval;
stli_initports(brdp);
- printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
+ printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x "
"nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
brdp->nrpanels, brdp->nrports);
@@ -3703,7 +3617,7 @@ static int stli_eisamemprobe(struct stlibrd *brdp)
if (! foundit) {
brdp->memaddr = 0;
brdp->membase = NULL;
- printk(KERN_ERR "STALLION: failed to probe shared memory "
+ printk(KERN_ERR "istallion: failed to probe shared memory "
"region for %s in EISA slot=%d\n",
stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
return -ENODEV;
@@ -3848,7 +3762,7 @@ static int __devinit stli_pciprobe(struct pci_dev *pdev,
mutex_lock(&stli_brdslock);
brdnr = stli_getbrdnr();
if (brdnr < 0) {
- printk(KERN_INFO "STALLION: too many boards found, "
+ printk(KERN_INFO "istallion: too many boards found, "
"maximum supported %d\n", STL_MAXBRDS);
mutex_unlock(&stli_brdslock);
retval = -EIO;
@@ -3920,7 +3834,7 @@ static struct stlibrd *stli_allocbrd(void)
brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
if (!brdp) {
- printk(KERN_ERR "STALLION: failed to allocate memory "
+ printk(KERN_ERR "istallion: failed to allocate memory "
"(size=%Zd)\n", sizeof(struct stlibrd));
return NULL;
}
@@ -4518,6 +4432,11 @@ static const struct tty_operations stli_ops = {
.tiocmset = stli_tiocmset,
};
+static const struct tty_port_operations stli_port_ops = {
+ .carrier_raised = stli_carrier_raised,
+ .raise_dtr_rts = stli_raise_dtr_rts,
+};
+
/*****************************************************************************/
/*
* Loadable module initialization stuff.
@@ -4554,7 +4473,7 @@ static int __init istallion_module_init(void)
stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
if (!stli_txcookbuf) {
- printk(KERN_ERR "STALLION: failed to allocate memory "
+ printk(KERN_ERR "istallion: failed to allocate memory "
"(size=%d)\n", STLI_TXBUFSIZE);
retval = -ENOMEM;
goto err;
@@ -4579,7 +4498,7 @@ static int __init istallion_module_init(void)
retval = tty_register_driver(stli_serial);
if (retval) {
- printk(KERN_ERR "STALLION: failed to register serial driver\n");
+ printk(KERN_ERR "istallion: failed to register serial driver\n");
goto err_ttyput;
}
@@ -4593,7 +4512,7 @@ static int __init istallion_module_init(void)
*/
retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
if (retval) {
- printk(KERN_ERR "STALLION: failed to register serial memory "
+ printk(KERN_ERR "istallion: failed to register serial memory "
"device\n");
goto err_deinit;
}
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 6431f6921a6..3586b3b3df3 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -425,9 +425,6 @@ static ssize_t read_oldmem(struct file *file, char __user *buf,
}
#endif
-extern long vread(char *buf, char *addr, unsigned long count);
-extern long vwrite(char *buf, char *addr, unsigned long count);
-
#ifdef CONFIG_DEVKMEM
/*
* This function reads the *virtual* memory as seen by the kernel.
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 12d327a2c9b..8b0da97d529 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -206,6 +206,7 @@ static void moxa_poll(unsigned long);
static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
static void moxa_setup_empty_event(struct tty_struct *);
static void moxa_shut_down(struct tty_struct *);
+static int moxa_carrier_raised(struct tty_port *);
/*
* moxa board interface functions:
*/
@@ -405,6 +406,10 @@ static const struct tty_operations moxa_ops = {
.tiocmset = moxa_tiocmset,
};
+static const struct tty_port_operations moxa_port_ops = {
+ .carrier_raised = moxa_carrier_raised,
+};
+
static struct tty_driver *moxaDriver;
static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
static DEFINE_SPINLOCK(moxa_lock);
@@ -826,6 +831,7 @@ static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev)
for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) {
tty_port_init(&p->port);
+ p->port.ops = &moxa_port_ops;
p->type = PORT_16550A;
p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
}
@@ -1115,15 +1121,27 @@ static void moxa_close_port(struct tty_struct *tty)
tty_port_tty_set(&ch->port, NULL);
}
+static int moxa_carrier_raised(struct tty_port *port)
+{
+ struct moxa_port *ch = container_of(port, struct moxa_port, port);
+ int dcd;
+
+ spin_lock_bh(&moxa_lock);
+ dcd = ch->DCDState;
+ spin_unlock_bh(&moxa_lock);
+ return dcd;
+}
+
static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
struct moxa_port *ch)
{
+ struct tty_port *port = &ch->port;
DEFINE_WAIT(wait);
int retval = 0;
u8 dcd;
while (1) {
- prepare_to_wait(&ch->port.open_wait, &wait, TASK_INTERRUPTIBLE);
+ prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp)) {
#ifdef SERIAL_DO_RESTART
retval = -ERESTARTSYS;
@@ -1132,9 +1150,7 @@ static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
#endif
break;
}
- spin_lock_bh(&moxa_lock);
- dcd = ch->DCDState;
- spin_unlock_bh(&moxa_lock);
+ dcd = tty_port_carrier_raised(port);
if (dcd)
break;
@@ -1144,7 +1160,7 @@ static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
}
schedule();
}
- finish_wait(&ch->port.open_wait, &wait);
+ finish_wait(&port->open_wait, &wait);
return retval;
}
diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index 4f8d67fed29..94ad2c3bfc4 100644
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@@ -663,7 +663,7 @@ static int __init mwave_init(void)
#if 0
/* sysfs */
memset(&mwave_device, 0, sizeof (struct device));
- snprintf(mwave_device.bus_id, BUS_ID_SIZE, "mwave");
+ dev_set_name(&mwave_device, "mwave");
if (device_register(&mwave_device))
goto cleanup_error;
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 04776691541..402c9f217f8 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -541,74 +541,21 @@ static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
return status;
}
-static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
- struct mxser_port *port)
+static int mxser_carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0;
- unsigned long flags;
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- test_bit(TTY_IO_ERROR, &tty->flags)) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
+ struct mxser_port *mp = container_of(port, struct mxser_port, port);
+ return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0;
+}
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
+static void mxser_raise_dtr_rts(struct tty_port *port)
+{
+ struct mxser_port *mp = container_of(port, struct mxser_port, port);
+ unsigned long flags;
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, port->port.count is dropped by one, so that
- * mxser_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
- spin_lock_irqsave(&port->slock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count--;
- spin_unlock_irqrestore(&port->slock, flags);
- port->port.blocked_open++;
- while (1) {
- spin_lock_irqsave(&port->slock, flags);
- outb(inb(port->ioaddr + UART_MCR) |
- UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
- spin_unlock_irqrestore(&port->slock, flags);
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal ||
- (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- if (retval)
- return retval;
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ spin_lock_irqsave(&mp->slock, flags);
+ outb(inb(mp->ioaddr + UART_MCR) |
+ UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR);
+ spin_unlock_irqrestore(&mp->slock, flags);
}
static int mxser_set_baud(struct tty_struct *tty, long newspd)
@@ -1087,14 +1034,14 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
/*
* Start up serial port
*/
- spin_lock_irqsave(&info->slock, flags);
+ spin_lock_irqsave(&info->port.lock, flags);
info->port.count++;
- spin_unlock_irqrestore(&info->slock, flags);
+ spin_unlock_irqrestore(&info->port.lock, flags);
retval = mxser_startup(tty);
if (retval)
return retval;
- retval = mxser_block_til_ready(tty, filp, info);
+ retval = tty_port_block_til_ready(&info->port, tty, filp);
if (retval)
return retval;
@@ -1133,58 +1080,27 @@ static void mxser_flush_buffer(struct tty_struct *tty)
static void mxser_close(struct tty_struct *tty, struct file *filp)
{
struct mxser_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
unsigned long timeout;
- unsigned long flags;
if (tty->index == MXSER_PORTS)
return;
if (!info)
return;
- spin_lock_irqsave(&info->slock, flags);
-
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&info->slock, flags);
- return;
- }
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. Info->port.count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk(KERN_ERR "mxser_close: bad serial port count; "
- "tty->count is 1, info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
- if (--info->port.count < 0) {
- printk(KERN_ERR "mxser_close: bad serial port count for "
- "ttys%d: %d\n", tty->index, info->port.count);
- info->port.count = 0;
- }
- if (info->port.count) {
- spin_unlock_irqrestore(&info->slock, flags);
+ if (tty_port_close_start(port, tty, filp) == 0)
return;
- }
- info->port.flags |= ASYNC_CLOSING;
- spin_unlock_irqrestore(&info->slock, flags);
+
/*
* Save the termios structure, since this port may have
* separate termios for callout and dialin.
+ *
+ * FIXME: Can this go ?
*/
if (info->port.flags & ASYNC_NORMAL_ACTIVE)
info->normal_termios = *tty->termios;
/*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->port.closing_wait);
- /*
* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
* interrupt driver to stop checking the data ready bit in the
@@ -1209,19 +1125,12 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
}
}
mxser_shutdown(tty);
-
mxser_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- tty->closing = 0;
- tty_port_tty_set(&info->port, NULL);
- if (info->port.blocked_open) {
- if (info->port.close_delay)
- schedule_timeout_interruptible(info->port.close_delay);
- wake_up_interruptible(&info->port.open_wait);
- }
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
+ /* Right now the tty_port set is done outside of the close_end helper
+ as we don't yet have everyone using refcounts */
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
}
static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)
@@ -2146,10 +2055,7 @@ static void mxser_hangup(struct tty_struct *tty)
mxser_flush_buffer(tty);
mxser_shutdown(tty);
- info->port.count = 0;
- info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- tty_port_tty_set(&info->port, NULL);
- wake_up_interruptible(&info->port.open_wait);
+ tty_port_hangup(&info->port);
}
/*
@@ -2449,6 +2355,11 @@ static const struct tty_operations mxser_ops = {
.tiocmset = mxser_tiocmset,
};
+struct tty_port_operations mxser_port_ops = {
+ .carrier_raised = mxser_carrier_raised,
+ .raise_dtr_rts = mxser_raise_dtr_rts,
+};
+
/*
* The MOXA Smartio/Industio serial driver boot-time initialization code!
*/
@@ -2482,6 +2393,7 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
for (i = 0; i < brd->info->nports; i++) {
info = &brd->ports[i];
tty_port_init(&info->port);
+ info->port.ops = &mxser_port_ops;
info->board = brd;
info->stop_rx = 0;
info->ldisc_stop_rx = 0;
diff --git a/drivers/char/n_r3964.c b/drivers/char/n_r3964.c
index 4a8215a89ad..d2e93e34322 100644
--- a/drivers/char/n_r3964.c
+++ b/drivers/char/n_r3964.c
@@ -1003,7 +1003,7 @@ static int r3964_open(struct tty_struct *tty)
static void r3964_close(struct tty_struct *tty)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_client_info *pClient, *pNext;
struct r3964_message *pMsg;
struct r3964_block_header *pHeader, *pNextHeader;
@@ -1058,7 +1058,7 @@ static void r3964_close(struct tty_struct *tty)
static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
unsigned char __user * buf, size_t nr)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_client_info *pClient;
struct r3964_message *pMsg;
struct r3964_client_message theMsg;
@@ -1113,7 +1113,7 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
static ssize_t r3964_write(struct tty_struct *tty, struct file *file,
const unsigned char *data, size_t count)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_block_header *pHeader;
struct r3964_client_info *pClient;
unsigned char *new_data;
@@ -1182,7 +1182,7 @@ static ssize_t r3964_write(struct tty_struct *tty, struct file *file,
static int r3964_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
if (pInfo == NULL)
return -EINVAL;
switch (cmd) {
@@ -1216,7 +1216,7 @@ static void r3964_set_termios(struct tty_struct *tty, struct ktermios *old)
static unsigned int r3964_poll(struct tty_struct *tty, struct file *file,
struct poll_table_struct *wait)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_client_info *pClient;
struct r3964_message *pMsg = NULL;
unsigned long flags;
@@ -1241,7 +1241,7 @@ static unsigned int r3964_poll(struct tty_struct *tty, struct file *file,
static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
char *fp, int count)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
const unsigned char *p;
char *f, flags = 0;
int i;
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index efbfe961265..f6f0e4ec2b5 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -47,8 +47,8 @@
#include <linux/bitops.h>
#include <linux/audit.h>
#include <linux/file.h>
+#include <linux/uaccess.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
/* number of characters left in xmit buffer before select has we have room */
@@ -62,6 +62,17 @@
#define TTY_THRESHOLD_THROTTLE 128 /* now based on remaining room */
#define TTY_THRESHOLD_UNTHROTTLE 128
+/*
+ * Special byte codes used in the echo buffer to represent operations
+ * or special handling of characters. Bytes in the echo buffer that
+ * are not part of such special blocks are treated as normal character
+ * codes.
+ */
+#define ECHO_OP_START 0xff
+#define ECHO_OP_MOVE_BACK_COL 0x80
+#define ECHO_OP_SET_CANON_COL 0x81
+#define ECHO_OP_ERASE_TAB 0x82
+
static inline unsigned char *alloc_buf(void)
{
gfp_t prio = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;
@@ -169,6 +180,7 @@ static void check_unthrottle(struct tty_struct *tty)
*
* Locking: tty_read_lock for read fields.
*/
+
static void reset_buffer_flags(struct tty_struct *tty)
{
unsigned long flags;
@@ -176,6 +188,11 @@ static void reset_buffer_flags(struct tty_struct *tty)
spin_lock_irqsave(&tty->read_lock, flags);
tty->read_head = tty->read_tail = tty->read_cnt = 0;
spin_unlock_irqrestore(&tty->read_lock, flags);
+
+ mutex_lock(&tty->echo_lock);
+ tty->echo_pos = tty->echo_cnt = tty->echo_overrun = 0;
+ mutex_unlock(&tty->echo_lock);
+
tty->canon_head = tty->canon_data = tty->erasing = 0;
memset(&tty->read_flags, 0, sizeof tty->read_flags);
n_tty_set_room(tty);
@@ -266,89 +283,118 @@ static inline int is_continuation(unsigned char c, struct tty_struct *tty)
}
/**
- * opost - output post processor
+ * do_output_char - output one character
* @c: character (or partial unicode symbol)
* @tty: terminal device
+ * @space: space available in tty driver write buffer
*
- * Perform OPOST processing. Returns -1 when the output device is
- * full and the character must be retried. Note that Linux currently
- * ignores TABDLY, CRDLY, VTDLY, FFDLY and NLDLY. They simply aren't
- * relevant in the world today. If you ever need them, add them here.
+ * This is a helper function that handles one output character
+ * (including special characters like TAB, CR, LF, etc.),
+ * putting the results in the tty driver's write buffer.
+ *
+ * Note that Linux currently ignores TABDLY, CRDLY, VTDLY, FFDLY
+ * and NLDLY. They simply aren't relevant in the world today.
+ * If you ever need them, add them here.
+ *
+ * Returns the number of bytes of buffer space used or -1 if
+ * no space left.
*
- * Called from both the receive and transmit sides and can be called
- * re-entrantly. Relies on lock_kernel() for tty->column state.
+ * Locking: should be called under the output_lock to protect
+ * the column state and space left in the buffer
*/
-static int opost(unsigned char c, struct tty_struct *tty)
+static int do_output_char(unsigned char c, struct tty_struct *tty, int space)
{
- int space, spaces;
+ int spaces;
- space = tty_write_room(tty);
if (!space)
return -1;
- lock_kernel();
- if (O_OPOST(tty)) {
- switch (c) {
- case '\n':
- if (O_ONLRET(tty))
- tty->column = 0;
- if (O_ONLCR(tty)) {
- if (space < 2) {
- unlock_kernel();
- return -1;
- }
- tty_put_char(tty, '\r');
- tty->column = 0;
- }
- tty->canon_column = tty->column;
- break;
- case '\r':
- if (O_ONOCR(tty) && tty->column == 0) {
- unlock_kernel();
- return 0;
- }
- if (O_OCRNL(tty)) {
- c = '\n';
- if (O_ONLRET(tty))
- tty->canon_column = tty->column = 0;
- break;
- }
+ switch (c) {
+ case '\n':
+ if (O_ONLRET(tty))
+ tty->column = 0;
+ if (O_ONLCR(tty)) {
+ if (space < 2)
+ return -1;
tty->canon_column = tty->column = 0;
+ tty_put_char(tty, '\r');
+ tty_put_char(tty, c);
+ return 2;
+ }
+ tty->canon_column = tty->column;
+ break;
+ case '\r':
+ if (O_ONOCR(tty) && tty->column == 0)
+ return 0;
+ if (O_OCRNL(tty)) {
+ c = '\n';
+ if (O_ONLRET(tty))
+ tty->canon_column = tty->column = 0;
break;
- case '\t':
- spaces = 8 - (tty->column & 7);
- if (O_TABDLY(tty) == XTABS) {
- if (space < spaces) {
- unlock_kernel();
- return -1;
- }
- tty->column += spaces;
- tty->ops->write(tty, " ", spaces);
- unlock_kernel();
- return 0;
- }
+ }
+ tty->canon_column = tty->column = 0;
+ break;
+ case '\t':
+ spaces = 8 - (tty->column & 7);
+ if (O_TABDLY(tty) == XTABS) {
+ if (space < spaces)
+ return -1;
tty->column += spaces;
- break;
- case '\b':
- if (tty->column > 0)
- tty->column--;
- break;
- default:
+ tty->ops->write(tty, " ", spaces);
+ return spaces;
+ }
+ tty->column += spaces;
+ break;
+ case '\b':
+ if (tty->column > 0)
+ tty->column--;
+ break;
+ default:
+ if (!iscntrl(c)) {
if (O_OLCUC(tty))
c = toupper(c);
- if (!iscntrl(c) && !is_continuation(c, tty))
+ if (!is_continuation(c, tty))
tty->column++;
- break;
}
+ break;
}
+
tty_put_char(tty, c);
- unlock_kernel();
- return 0;
+ return 1;
}
/**
- * opost_block - block postprocess
+ * process_output - output post processor
+ * @c: character (or partial unicode symbol)
+ * @tty: terminal device
+ *
+ * Perform OPOST processing. Returns -1 when the output device is
+ * full and the character must be retried.
+ *
+ * Locking: output_lock to protect column state and space left
+ * (also, this is called from n_tty_write under the
+ * tty layer write lock)
+ */
+
+static int process_output(unsigned char c, struct tty_struct *tty)
+{
+ int space, retval;
+
+ mutex_lock(&tty->output_lock);
+
+ space = tty_write_room(tty);
+ retval = do_output_char(c, tty, space);
+
+ mutex_unlock(&tty->output_lock);
+ if (retval < 0)
+ return -1;
+ else
+ return 0;
+}
+
+/**
+ * process_output_block - block post processor
* @tty: terminal device
* @inbuf: user buffer
* @nr: number of bytes
@@ -358,26 +404,32 @@ static int opost(unsigned char c, struct tty_struct *tty)
* the simple cases normally found and helps to generate blocks of
* symbols for the console driver and thus improve performance.
*
- * Called from n_tty_write under the tty layer write lock. Relies
- * on lock_kernel for the tty->column state.
+ * Locking: output_lock to protect column state and space left
+ * (also, this is called from n_tty_write under the
+ * tty layer write lock)
*/
-static ssize_t opost_block(struct tty_struct *tty,
- const unsigned char *buf, unsigned int nr)
+static ssize_t process_output_block(struct tty_struct *tty,
+ const unsigned char *buf, unsigned int nr)
{
int space;
int i;
const unsigned char *cp;
+ mutex_lock(&tty->output_lock);
+
space = tty_write_room(tty);
- if (!space)
+ if (!space) {
+ mutex_unlock(&tty->output_lock);
return 0;
+ }
if (nr > space)
nr = space;
- lock_kernel();
for (i = 0, cp = buf; i < nr; i++, cp++) {
- switch (*cp) {
+ unsigned char c = *cp;
+
+ switch (c) {
case '\n':
if (O_ONLRET(tty))
tty->column = 0;
@@ -399,54 +451,403 @@ static ssize_t opost_block(struct tty_struct *tty,
tty->column--;
break;
default:
- if (O_OLCUC(tty))
- goto break_out;
- if (!iscntrl(*cp))
- tty->column++;
+ if (!iscntrl(c)) {
+ if (O_OLCUC(tty))
+ goto break_out;
+ if (!is_continuation(c, tty))
+ tty->column++;
+ }
break;
}
}
break_out:
- if (tty->ops->flush_chars)
- tty->ops->flush_chars(tty);
i = tty->ops->write(tty, buf, i);
- unlock_kernel();
+
+ mutex_unlock(&tty->output_lock);
return i;
}
+/**
+ * process_echoes - write pending echo characters
+ * @tty: terminal device
+ *
+ * Write previously buffered echo (and other ldisc-generated)
+ * characters to the tty.
+ *
+ * Characters generated by the ldisc (including echoes) need to
+ * be buffered because the driver's write buffer can fill during
+ * heavy program output. Echoing straight to the driver will
+ * often fail under these conditions, causing lost characters and
+ * resulting mismatches of ldisc state information.
+ *
+ * Since the ldisc state must represent the characters actually sent
+ * to the driver at the time of the write, operations like certain
+ * changes in column state are also saved in the buffer and executed
+ * here.
+ *
+ * A circular fifo buffer is used so that the most recent characters
+ * are prioritized. Also, when control characters are echoed with a
+ * prefixed "^", the pair is treated atomically and thus not separated.
+ *
+ * Locking: output_lock to protect column state and space left,
+ * echo_lock to protect the echo buffer
+ */
+
+static void process_echoes(struct tty_struct *tty)
+{
+ int space, nr;
+ unsigned char c;
+ unsigned char *cp, *buf_end;
+
+ if (!tty->echo_cnt)
+ return;
+
+ mutex_lock(&tty->output_lock);
+ mutex_lock(&tty->echo_lock);
+
+ space = tty_write_room(tty);
+
+ buf_end = tty->echo_buf + N_TTY_BUF_SIZE;
+ cp = tty->echo_buf + tty->echo_pos;
+ nr = tty->echo_cnt;
+ while (nr > 0) {
+ c = *cp;
+ if (c == ECHO_OP_START) {
+ unsigned char op;
+ unsigned char *opp;
+ int no_space_left = 0;
+
+ /*
+ * If the buffer byte is the start of a multi-byte
+ * operation, get the next byte, which is either the
+ * op code or a control character value.
+ */
+ opp = cp + 1;
+ if (opp == buf_end)
+ opp -= N_TTY_BUF_SIZE;
+ op = *opp;
+
+ switch (op) {
+ unsigned int num_chars, num_bs;
+
+ case ECHO_OP_ERASE_TAB:
+ if (++opp == buf_end)
+ opp -= N_TTY_BUF_SIZE;
+ num_chars = *opp;
+
+ /*
+ * Determine how many columns to go back
+ * in order to erase the tab.
+ * This depends on the number of columns
+ * used by other characters within the tab
+ * area. If this (modulo 8) count is from
+ * the start of input rather than from a
+ * previous tab, we offset by canon column.
+ * Otherwise, tab spacing is normal.
+ */
+ if (!(num_chars & 0x80))
+ num_chars += tty->canon_column;
+ num_bs = 8 - (num_chars & 7);
+
+ if (num_bs > space) {
+ no_space_left = 1;
+ break;
+ }
+ space -= num_bs;
+ while (num_bs--) {
+ tty_put_char(tty, '\b');
+ if (tty->column > 0)
+ tty->column--;
+ }
+ cp += 3;
+ nr -= 3;
+ break;
+
+ case ECHO_OP_SET_CANON_COL:
+ tty->canon_column = tty->column;
+ cp += 2;
+ nr -= 2;
+ break;
+
+ case ECHO_OP_MOVE_BACK_COL:
+ if (tty->column > 0)
+ tty->column--;
+ cp += 2;
+ nr -= 2;
+ break;
+
+ case ECHO_OP_START:
+ /* This is an escaped echo op start code */
+ if (!space) {
+ no_space_left = 1;
+ break;
+ }
+ tty_put_char(tty, ECHO_OP_START);
+ tty->column++;
+ space--;
+ cp += 2;
+ nr -= 2;
+ break;
+
+ default:
+ if (iscntrl(op)) {
+ if (L_ECHOCTL(tty)) {
+ /*
+ * Ensure there is enough space
+ * for the whole ctrl pair.
+ */
+ if (space < 2) {
+ no_space_left = 1;
+ break;
+ }
+ tty_put_char(tty, '^');
+ tty_put_char(tty, op ^ 0100);
+ tty->column += 2;
+ space -= 2;
+ } else {
+ if (!space) {
+ no_space_left = 1;
+ break;
+ }
+ tty_put_char(tty, op);
+ space--;
+ }
+ }
+ /*
+ * If above falls through, this was an
+ * undefined op.
+ */
+ cp += 2;
+ nr -= 2;
+ }
+
+ if (no_space_left)
+ break;
+ } else {
+ int retval;
+
+ retval = do_output_char(c, tty, space);
+ if (retval < 0)
+ break;
+ space -= retval;
+ cp += 1;
+ nr -= 1;
+ }
+
+ /* When end of circular buffer reached, wrap around */
+ if (cp >= buf_end)
+ cp -= N_TTY_BUF_SIZE;
+ }
+
+ if (nr == 0) {
+ tty->echo_pos = 0;
+ tty->echo_cnt = 0;
+ tty->echo_overrun = 0;
+ } else {
+ int num_processed = tty->echo_cnt - nr;
+ tty->echo_pos += num_processed;
+ tty->echo_pos &= N_TTY_BUF_SIZE - 1;
+ tty->echo_cnt = nr;
+ if (num_processed > 0)
+ tty->echo_overrun = 0;
+ }
+
+ mutex_unlock(&tty->echo_lock);
+ mutex_unlock(&tty->output_lock);
+
+ if (tty->ops->flush_chars)
+ tty->ops->flush_chars(tty);
+}
/**
- * echo_char - echo characters
+ * add_echo_byte - add a byte to the echo buffer
+ * @c: unicode byte to echo
+ * @tty: terminal device
+ *
+ * Add a character or operation byte to the echo buffer.
+ *
+ * Should be called under the echo lock to protect the echo buffer.
+ */
+
+static void add_echo_byte(unsigned char c, struct tty_struct *tty)
+{
+ int new_byte_pos;
+
+ if (tty->echo_cnt == N_TTY_BUF_SIZE) {
+ /* Circular buffer is already at capacity */
+ new_byte_pos = tty->echo_pos;
+
+ /*
+ * Since the buffer start position needs to be advanced,
+ * be sure to step by a whole operation byte group.
+ */
+ if (tty->echo_buf[tty->echo_pos] == ECHO_OP_START) {
+ if (tty->echo_buf[(tty->echo_pos + 1) &
+ (N_TTY_BUF_SIZE - 1)] ==
+ ECHO_OP_ERASE_TAB) {
+ tty->echo_pos += 3;
+ tty->echo_cnt -= 2;
+ } else {
+ tty->echo_pos += 2;
+ tty->echo_cnt -= 1;
+ }
+ } else {
+ tty->echo_pos++;
+ }
+ tty->echo_pos &= N_TTY_BUF_SIZE - 1;
+
+ tty->echo_overrun = 1;
+ } else {
+ new_byte_pos = tty->echo_pos + tty->echo_cnt;
+ new_byte_pos &= N_TTY_BUF_SIZE - 1;
+ tty->echo_cnt++;
+ }
+
+ tty->echo_buf[new_byte_pos] = c;
+}
+
+/**
+ * echo_move_back_col - add operation to move back a column
+ * @tty: terminal device
+ *
+ * Add an operation to the echo buffer to move back one column.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_move_back_col(struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_MOVE_BACK_COL, tty);
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_set_canon_col - add operation to set the canon column
+ * @tty: terminal device
+ *
+ * Add an operation to the echo buffer to set the canon column
+ * to the current column.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_set_canon_col(struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_SET_CANON_COL, tty);
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_erase_tab - add operation to erase a tab
+ * @num_chars: number of character columns already used
+ * @after_tab: true if num_chars starts after a previous tab
+ * @tty: terminal device
+ *
+ * Add an operation to the echo buffer to erase a tab.
+ *
+ * Called by the eraser function, which knows how many character
+ * columns have been used since either a previous tab or the start
+ * of input. This information will be used later, along with
+ * canon column (if applicable), to go back the correct number
+ * of columns.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_erase_tab(unsigned int num_chars, int after_tab,
+ struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_ERASE_TAB, tty);
+
+ /* We only need to know this modulo 8 (tab spacing) */
+ num_chars &= 7;
+
+ /* Set the high bit as a flag if num_chars is after a previous tab */
+ if (after_tab)
+ num_chars |= 0x80;
+
+ add_echo_byte(num_chars, tty);
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_char_raw - echo a character raw
* @c: unicode byte to echo
* @tty: terminal device
*
* Echo user input back onto the screen. This must be called only when
* L_ECHO(tty) is true. Called from the driver receive_buf path.
*
- * Relies on BKL for tty column locking
+ * This variant does not treat control characters specially.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_char_raw(unsigned char c, struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ if (c == ECHO_OP_START) {
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_START, tty);
+ } else {
+ add_echo_byte(c, tty);
+ }
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_char - echo a character
+ * @c: unicode byte to echo
+ * @tty: terminal device
+ *
+ * Echo user input back onto the screen. This must be called only when
+ * L_ECHO(tty) is true. Called from the driver receive_buf path.
+ *
+ * This variant tags control characters to be possibly echoed as
+ * as "^X" (where X is the letter representing the control char).
+ *
+ * Locking: echo_lock to protect the echo buffer
*/
static void echo_char(unsigned char c, struct tty_struct *tty)
{
- if (L_ECHOCTL(tty) && iscntrl(c) && c != '\t') {
- tty_put_char(tty, '^');
- tty_put_char(tty, c ^ 0100);
- tty->column += 2;
- } else
- opost(c, tty);
+ mutex_lock(&tty->echo_lock);
+
+ if (c == ECHO_OP_START) {
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_START, tty);
+ } else {
+ if (iscntrl(c) && c != '\t')
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(c, tty);
+ }
+
+ mutex_unlock(&tty->echo_lock);
}
/**
- * finsh_erasing - complete erase
+ * finish_erasing - complete erase
* @tty: tty doing the erase
- *
- * Relies on BKL for tty column locking
*/
+
static inline void finish_erasing(struct tty_struct *tty)
{
if (tty->erasing) {
- tty_put_char(tty, '/');
- tty->column++;
+ echo_char_raw('/', tty);
tty->erasing = 0;
}
}
@@ -460,7 +861,7 @@ static inline void finish_erasing(struct tty_struct *tty)
* present in the stream from the driver layer. Handles the complexities
* of UTF-8 multibyte symbols.
*
- * Locking: read_lock for tty buffers, BKL for column/erasing state
+ * Locking: read_lock for tty buffers
*/
static void eraser(unsigned char c, struct tty_struct *tty)
@@ -471,7 +872,7 @@ static void eraser(unsigned char c, struct tty_struct *tty)
/* FIXME: locking needed ? */
if (tty->read_head == tty->canon_head) {
- /* opost('\a', tty); */ /* what do you think? */
+ /* process_output('\a', tty); */ /* what do you think? */
return;
}
if (c == ERASE_CHAR(tty))
@@ -497,7 +898,7 @@ static void eraser(unsigned char c, struct tty_struct *tty)
echo_char(KILL_CHAR(tty), tty);
/* Add a newline if ECHOK is on and ECHOKE is off. */
if (L_ECHOK(tty))
- opost('\n', tty);
+ echo_char_raw('\n', tty);
return;
}
kill_type = KILL;
@@ -533,67 +934,61 @@ static void eraser(unsigned char c, struct tty_struct *tty)
if (L_ECHO(tty)) {
if (L_ECHOPRT(tty)) {
if (!tty->erasing) {
- tty_put_char(tty, '\\');
- tty->column++;
+ echo_char_raw('\\', tty);
tty->erasing = 1;
}
/* if cnt > 1, output a multi-byte character */
echo_char(c, tty);
while (--cnt > 0) {
head = (head+1) & (N_TTY_BUF_SIZE-1);
- tty_put_char(tty, tty->read_buf[head]);
+ echo_char_raw(tty->read_buf[head], tty);
+ echo_move_back_col(tty);
}
} else if (kill_type == ERASE && !L_ECHOE(tty)) {
echo_char(ERASE_CHAR(tty), tty);
} else if (c == '\t') {
- unsigned int col = tty->canon_column;
- unsigned long tail = tty->canon_head;
-
- /* Find the column of the last char. */
- while (tail != tty->read_head) {
+ unsigned int num_chars = 0;
+ int after_tab = 0;
+ unsigned long tail = tty->read_head;
+
+ /*
+ * Count the columns used for characters
+ * since the start of input or after a
+ * previous tab.
+ * This info is used to go back the correct
+ * number of columns.
+ */
+ while (tail != tty->canon_head) {
+ tail = (tail-1) & (N_TTY_BUF_SIZE-1);
c = tty->read_buf[tail];
- if (c == '\t')
- col = (col | 7) + 1;
- else if (iscntrl(c)) {
+ if (c == '\t') {
+ after_tab = 1;
+ break;
+ } else if (iscntrl(c)) {
if (L_ECHOCTL(tty))
- col += 2;
- } else if (!is_continuation(c, tty))
- col++;
- tail = (tail+1) & (N_TTY_BUF_SIZE-1);
- }
-
- /* should never happen */
- if (tty->column > 0x80000000)
- tty->column = 0;
-
- /* Now backup to that column. */
- while (tty->column > col) {
- /* Can't use opost here. */
- tty_put_char(tty, '\b');
- if (tty->column > 0)
- tty->column--;
+ num_chars += 2;
+ } else if (!is_continuation(c, tty)) {
+ num_chars++;
+ }
}
+ echo_erase_tab(num_chars, after_tab, tty);
} else {
if (iscntrl(c) && L_ECHOCTL(tty)) {
- tty_put_char(tty, '\b');
- tty_put_char(tty, ' ');
- tty_put_char(tty, '\b');
- if (tty->column > 0)
- tty->column--;
+ echo_char_raw('\b', tty);
+ echo_char_raw(' ', tty);
+ echo_char_raw('\b', tty);
}
if (!iscntrl(c) || L_ECHOCTL(tty)) {
- tty_put_char(tty, '\b');
- tty_put_char(tty, ' ');
- tty_put_char(tty, '\b');
- if (tty->column > 0)
- tty->column--;
+ echo_char_raw('\b', tty);
+ echo_char_raw(' ', tty);
+ echo_char_raw('\b', tty);
}
}
}
if (kill_type == ERASE)
break;
}
- if (tty->read_head == tty->canon_head)
+ if (tty->read_head == tty->canon_head && L_ECHO(tty))
finish_erasing(tty);
}
@@ -712,6 +1107,7 @@ static inline void n_tty_receive_parity_error(struct tty_struct *tty,
static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
{
unsigned long flags;
+ int parmrk;
if (tty->raw) {
put_tty_queue(c, tty);
@@ -721,18 +1117,21 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
if (I_ISTRIP(tty))
c &= 0x7f;
if (I_IUCLC(tty) && L_IEXTEN(tty))
- c=tolower(c);
+ c = tolower(c);
if (tty->stopped && !tty->flow_stopped && I_IXON(tty) &&
- ((I_IXANY(tty) && c != START_CHAR(tty) && c != STOP_CHAR(tty)) ||
- c == INTR_CHAR(tty) || c == QUIT_CHAR(tty) || c == SUSP_CHAR(tty)))
+ I_IXANY(tty) && c != START_CHAR(tty) && c != STOP_CHAR(tty) &&
+ c != INTR_CHAR(tty) && c != QUIT_CHAR(tty) && c != SUSP_CHAR(tty)) {
start_tty(tty);
+ process_echoes(tty);
+ }
if (tty->closing) {
if (I_IXON(tty)) {
- if (c == START_CHAR(tty))
+ if (c == START_CHAR(tty)) {
start_tty(tty);
- else if (c == STOP_CHAR(tty))
+ process_echoes(tty);
+ } else if (c == STOP_CHAR(tty))
stop_tty(tty);
}
return;
@@ -745,19 +1144,23 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
* up.
*/
if (!test_bit(c, tty->process_char_map) || tty->lnext) {
- finish_erasing(tty);
tty->lnext = 0;
+ parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty)) ? 1 : 0;
+ if (tty->read_cnt >= (N_TTY_BUF_SIZE - parmrk - 1)) {
+ /* beep if no space */
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
if (L_ECHO(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1) {
- tty_put_char(tty, '\a'); /* beep if no space */
- return;
- }
+ finish_erasing(tty);
/* Record the column of first canon char. */
if (tty->canon_head == tty->read_head)
- tty->canon_column = tty->column;
+ echo_set_canon_col(tty);
echo_char(c, tty);
+ process_echoes(tty);
}
- if (I_PARMRK(tty) && c == (unsigned char) '\377')
+ if (parmrk)
put_tty_queue(c, tty);
put_tty_queue(c, tty);
return;
@@ -766,6 +1169,7 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
if (I_IXON(tty)) {
if (c == START_CHAR(tty)) {
start_tty(tty);
+ process_echoes(tty);
return;
}
if (c == STOP_CHAR(tty)) {
@@ -786,7 +1190,6 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
if (c == SUSP_CHAR(tty)) {
send_signal:
/*
- * Echo character, and then send the signal.
* Note that we do not use isig() here because we want
* the order to be:
* 1) flush, 2) echo, 3) signal
@@ -795,8 +1198,12 @@ send_signal:
n_tty_flush_buffer(tty);
tty_driver_flush_buffer(tty);
}
- if (L_ECHO(tty))
+ if (I_IXON(tty))
+ start_tty(tty);
+ if (L_ECHO(tty)) {
echo_char(c, tty);
+ process_echoes(tty);
+ }
if (tty->pgrp)
kill_pgrp(tty->pgrp, signal, 1);
return;
@@ -815,6 +1222,7 @@ send_signal:
if (c == ERASE_CHAR(tty) || c == KILL_CHAR(tty) ||
(c == WERASE_CHAR(tty) && L_IEXTEN(tty))) {
eraser(c, tty);
+ process_echoes(tty);
return;
}
if (c == LNEXT_CHAR(tty) && L_IEXTEN(tty)) {
@@ -822,8 +1230,9 @@ send_signal:
if (L_ECHO(tty)) {
finish_erasing(tty);
if (L_ECHOCTL(tty)) {
- tty_put_char(tty, '^');
- tty_put_char(tty, '\b');
+ echo_char_raw('^', tty);
+ echo_char_raw('\b', tty);
+ process_echoes(tty);
}
}
return;
@@ -834,22 +1243,29 @@ send_signal:
finish_erasing(tty);
echo_char(c, tty);
- opost('\n', tty);
+ echo_char_raw('\n', tty);
while (tail != tty->read_head) {
echo_char(tty->read_buf[tail], tty);
tail = (tail+1) & (N_TTY_BUF_SIZE-1);
}
+ process_echoes(tty);
return;
}
if (c == '\n') {
+ if (tty->read_cnt >= N_TTY_BUF_SIZE) {
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
if (L_ECHO(tty) || L_ECHONL(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1)
- tty_put_char(tty, '\a');
- opost('\n', tty);
+ echo_char_raw('\n', tty);
+ process_echoes(tty);
}
goto handle_newline;
}
if (c == EOF_CHAR(tty)) {
+ if (tty->read_cnt >= N_TTY_BUF_SIZE)
+ return;
if (tty->canon_head != tty->read_head)
set_bit(TTY_PUSH, &tty->flags);
c = __DISABLED_CHAR;
@@ -857,22 +1273,28 @@ send_signal:
}
if ((c == EOL_CHAR(tty)) ||
(c == EOL2_CHAR(tty) && L_IEXTEN(tty))) {
+ parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty))
+ ? 1 : 0;
+ if (tty->read_cnt >= (N_TTY_BUF_SIZE - parmrk)) {
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
/*
* XXX are EOL_CHAR and EOL2_CHAR echoed?!?
*/
if (L_ECHO(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1)
- tty_put_char(tty, '\a');
/* Record the column of first canon char. */
if (tty->canon_head == tty->read_head)
- tty->canon_column = tty->column;
+ echo_set_canon_col(tty);
echo_char(c, tty);
+ process_echoes(tty);
}
/*
* XXX does PARMRK doubling happen for
* EOL_CHAR and EOL2_CHAR?
*/
- if (I_PARMRK(tty) && c == (unsigned char) '\377')
+ if (parmrk)
put_tty_queue(c, tty);
handle_newline:
@@ -889,23 +1311,27 @@ handle_newline:
}
}
- finish_erasing(tty);
+ parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty)) ? 1 : 0;
+ if (tty->read_cnt >= (N_TTY_BUF_SIZE - parmrk - 1)) {
+ /* beep if no space */
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
if (L_ECHO(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1) {
- tty_put_char(tty, '\a'); /* beep if no space */
- return;
- }
+ finish_erasing(tty);
if (c == '\n')
- opost('\n', tty);
+ echo_char_raw('\n', tty);
else {
/* Record the column of first canon char. */
if (tty->canon_head == tty->read_head)
- tty->canon_column = tty->column;
+ echo_set_canon_col(tty);
echo_char(c, tty);
}
+ process_echoes(tty);
}
- if (I_PARMRK(tty) && c == (unsigned char) '\377')
+ if (parmrk)
put_tty_queue(c, tty);
put_tty_queue(c, tty);
@@ -923,10 +1349,11 @@ handle_newline:
static void n_tty_write_wakeup(struct tty_struct *tty)
{
- if (tty->fasync) {
- set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
+ /* Write out any echoed characters that are still pending */
+ process_echoes(tty);
+
+ if (tty->fasync && test_and_clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags))
kill_fasync(&tty->fasync, SIGIO, POLL_OUT);
- }
}
/**
@@ -1134,6 +1561,10 @@ static void n_tty_close(struct tty_struct *tty)
free_buf(tty->read_buf);
tty->read_buf = NULL;
}
+ if (tty->echo_buf) {
+ free_buf(tty->echo_buf);
+ tty->echo_buf = NULL;
+ }
}
/**
@@ -1151,13 +1582,19 @@ static int n_tty_open(struct tty_struct *tty)
if (!tty)
return -EINVAL;
- /* This one is ugly. Currently a malloc failure here can panic */
+ /* These are ugly. Currently a malloc failure here can panic */
if (!tty->read_buf) {
tty->read_buf = alloc_buf();
if (!tty->read_buf)
return -ENOMEM;
}
+ if (!tty->echo_buf) {
+ tty->echo_buf = alloc_buf();
+ if (!tty->echo_buf)
+ return -ENOMEM;
+ }
memset(tty->read_buf, 0, N_TTY_BUF_SIZE);
+ memset(tty->echo_buf, 0, N_TTY_BUF_SIZE);
reset_buffer_flags(tty);
tty->column = 0;
n_tty_set_termios(tty, NULL);
@@ -1487,16 +1924,23 @@ do_it_again:
* @buf: userspace buffer pointer
* @nr: size of I/O
*
- * Write function of the terminal device. This is serialized with
+ * Write function of the terminal device. This is serialized with
* respect to other write callers but not to termios changes, reads
- * and other such events. We must be careful with N_TTY as the receive
- * code will echo characters, thus calling driver write methods.
+ * and other such events. Since the receive code will echo characters,
+ * thus calling driver write methods, the output_lock is used in
+ * the output processing functions called here as well as in the
+ * echo processing function to protect the column state and space
+ * left in the buffer.
*
* This code must be sure never to sleep through a hangup.
+ *
+ * Locking: output_lock to protect column state and space left
+ * (note that the process_output*() functions take this
+ * lock themselves)
*/
static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t nr)
+ const unsigned char *buf, size_t nr)
{
const unsigned char *b = buf;
DECLARE_WAITQUEUE(wait, current);
@@ -1510,6 +1954,9 @@ static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
return retval;
}
+ /* Write out any echoed characters that are still pending */
+ process_echoes(tty);
+
add_wait_queue(&tty->write_wait, &wait);
while (1) {
set_current_state(TASK_INTERRUPTIBLE);
@@ -1523,7 +1970,7 @@ static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
}
if (O_OPOST(tty) && !(test_bit(TTY_HW_COOK_OUT, &tty->flags))) {
while (nr > 0) {
- ssize_t num = opost_block(tty, b, nr);
+ ssize_t num = process_output_block(tty, b, nr);
if (num < 0) {
if (num == -EAGAIN)
break;
@@ -1535,7 +1982,7 @@ static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
if (nr == 0)
break;
c = *b;
- if (opost(c, tty) < 0)
+ if (process_output(c, tty) < 0)
break;
b++; nr--;
}
@@ -1565,6 +2012,8 @@ static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
break_out:
__set_current_state(TASK_RUNNING);
remove_wait_queue(&tty->write_wait, &wait);
+ if (b - buf != nr && tty->fasync)
+ set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
return (b - buf) ? b - buf : retval;
}
@@ -1663,4 +2112,3 @@ struct tty_ldisc_ops tty_ldisc_N_TTY = {
.receive_buf = n_tty_receive_buf,
.write_wakeup = n_tty_write_wakeup
};
-
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index 9a34a193528..d6102b644b5 100644
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -353,6 +353,7 @@ struct ctrl_ul {
/* This holds all information that is needed regarding a port */
struct port {
+ struct tty_port port;
u8 update_flow_control;
struct ctrl_ul ctrl_ul;
struct ctrl_dl ctrl_dl;
@@ -365,8 +366,6 @@ struct port {
u8 toggle_ul;
u16 token_dl;
- struct tty_struct *tty;
- int tty_open_count;
/* mutex to ensure one access patch to this port */
struct mutex tty_sem;
wait_queue_head_t tty_wait;
@@ -788,14 +787,14 @@ static void disable_transmit_dl(enum port_type port, struct nozomi *dc)
* Return 1 - send buffer to card and ack.
* Return 0 - don't ack, don't send buffer to card.
*/
-static int send_data(enum port_type index, const struct nozomi *dc)
+static int send_data(enum port_type index, struct nozomi *dc)
{
u32 size = 0;
- const struct port *port = &dc->port[index];
+ struct port *port = &dc->port[index];
const u8 toggle = port->toggle_ul;
void __iomem *addr = port->ul_addr[toggle];
const u32 ul_size = port->ul_size[toggle];
- struct tty_struct *tty = port->tty;
+ struct tty_struct *tty = tty_port_tty_get(&port->port);
/* Get data from tty and place in buf for now */
size = __kfifo_get(port->fifo_ul, dc->send_buf,
@@ -803,6 +802,7 @@ static int send_data(enum port_type index, const struct nozomi *dc)
if (size == 0) {
DBG4("No more data to send, disable link:");
+ tty_kref_put(tty);
return 0;
}
@@ -815,6 +815,7 @@ static int send_data(enum port_type index, const struct nozomi *dc)
if (tty)
tty_wakeup(tty);
+ tty_kref_put(tty);
return 1;
}
@@ -826,7 +827,7 @@ static int receive_data(enum port_type index, struct nozomi *dc)
u32 offset = 4;
struct port *port = &dc->port[index];
void __iomem *addr = port->dl_addr[port->toggle_dl];
- struct tty_struct *tty = port->tty;
+ struct tty_struct *tty = tty_port_tty_get(&port->port);
int i;
if (unlikely(!tty)) {
@@ -870,7 +871,7 @@ static int receive_data(enum port_type index, struct nozomi *dc)
}
set_bit(index, &dc->flip);
-
+ tty_kref_put(tty);
return 1;
}
@@ -1276,9 +1277,15 @@ static irqreturn_t interrupt_handler(int irq, void *dev_id)
exit_handler:
spin_unlock(&dc->spin_mutex);
- for (a = 0; a < NOZOMI_MAX_PORTS; a++)
- if (test_and_clear_bit(a, &dc->flip))
- tty_flip_buffer_push(dc->port[a].tty);
+ for (a = 0; a < NOZOMI_MAX_PORTS; a++) {
+ struct tty_struct *tty;
+ if (test_and_clear_bit(a, &dc->flip)) {
+ tty = tty_port_tty_get(&dc->port[a].port);
+ if (tty)
+ tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
+ }
+ }
return IRQ_HANDLED;
none:
spin_unlock(&dc->spin_mutex);
@@ -1453,12 +1460,10 @@ static int __devinit nozomi_card_init(struct pci_dev *pdev,
for (i = 0; i < MAX_PORT; i++) {
mutex_init(&dc->port[i].tty_sem);
- dc->port[i].tty_open_count = 0;
- dc->port[i].tty = NULL;
+ tty_port_init(&dc->port[i].port);
tty_register_device(ntty_driver, dc->index_start + i,
&pdev->dev);
}
-
return 0;
err_free_sbuf:
@@ -1482,14 +1487,16 @@ static void __devexit tty_exit(struct nozomi *dc)
flush_scheduled_work();
- for (i = 0; i < MAX_PORT; ++i)
- if (dc->port[i].tty && \
- list_empty(&dc->port[i].tty->hangup_work.entry))
- tty_hangup(dc->port[i].tty);
-
+ for (i = 0; i < MAX_PORT; ++i) {
+ struct tty_struct *tty = tty_port_tty_get(&dc->port[i].port);
+ if (tty && list_empty(&tty->hangup_work.entry))
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
+ /* Racy below - surely should wait for scheduled work to be done or
+ complete off a hangup method ? */
while (dc->open_ttys)
msleep(1);
-
for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i)
tty_unregister_device(ntty_driver, i);
}
@@ -1579,23 +1586,22 @@ static int ntty_open(struct tty_struct *tty, struct file *file)
if (mutex_lock_interruptible(&port->tty_sem))
return -ERESTARTSYS;
- port->tty_open_count++;
+ port->port.count++;
dc->open_ttys++;
/* Enable interrupt downlink for channel */
- if (port->tty_open_count == 1) {
+ if (port->port.count == 1) {
+ /* FIXME: is this needed now ? */
tty->low_latency = 1;
tty->driver_data = port;
- port->tty = tty;
+ tty_port_tty_set(&port->port, tty);
DBG1("open: %d", port->token_dl);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier = dc->last_ier | port->token_dl;
writew(dc->last_ier, dc->reg_ier);
spin_unlock_irqrestore(&dc->spin_mutex, flags);
}
-
mutex_unlock(&port->tty_sem);
-
return 0;
}
@@ -1606,31 +1612,30 @@ static int ntty_open(struct tty_struct *tty, struct file *file)
static void ntty_close(struct tty_struct *tty, struct file *file)
{
struct nozomi *dc = get_dc_by_tty(tty);
- struct port *port = tty->driver_data;
+ struct port *nport = tty->driver_data;
+ struct tty_port *port = &nport->port;
unsigned long flags;
- if (!dc || !port)
+ if (!dc || !nport)
return;
- if (mutex_lock_interruptible(&port->tty_sem))
- return;
+ /* Users cannot interrupt a close */
+ mutex_lock(&nport->tty_sem);
- if (!port->tty_open_count)
- goto exit;
+ WARN_ON(!port->count);
dc->open_ttys--;
- port->tty_open_count--;
+ port->count--;
+ tty_port_tty_set(port, NULL);
- if (port->tty_open_count == 0) {
- DBG1("close: %d", port->token_dl);
+ if (port->count == 0) {
+ DBG1("close: %d", nport->token_dl);
spin_lock_irqsave(&dc->spin_mutex, flags);
- dc->last_ier &= ~(port->token_dl);
+ dc->last_ier &= ~(nport->token_dl);
writew(dc->last_ier, dc->reg_ier);
spin_unlock_irqrestore(&dc->spin_mutex, flags);
}
-
-exit:
- mutex_unlock(&port->tty_sem);
+ mutex_unlock(&nport->tty_sem);
}
/*
@@ -1660,7 +1665,7 @@ static int ntty_write(struct tty_struct *tty, const unsigned char *buffer,
return -EAGAIN;
}
- if (unlikely(!port->tty_open_count)) {
+ if (unlikely(!port->port.count)) {
DBG1(" ");
goto exit;
}
@@ -1710,7 +1715,7 @@ static int ntty_write_room(struct tty_struct *tty)
if (!mutex_trylock(&port->tty_sem))
return 0;
- if (!port->tty_open_count)
+ if (!port->port.count)
goto exit;
room = port->fifo_ul->size - __kfifo_len(port->fifo_ul);
@@ -1866,7 +1871,7 @@ static s32 ntty_chars_in_buffer(struct tty_struct *tty)
goto exit_in_buffer;
}
- if (unlikely(!port->tty_open_count)) {
+ if (unlikely(!port->port.count)) {
dev_err(&dc->pdev->dev, "No tty open?\n");
rval = -ENODEV;
goto exit_in_buffer;
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 8054ee839b3..88cee4099be 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -32,9 +32,10 @@
* added changelog
* 1.2 Erik Gilling: Cobalt Networks support
* Tim Hockin: general cleanup, Cobalt support
+ * 1.3 Wim Van Sebroeck: convert PRINT_PROC to seq_file
*/
-#define NVRAM_VERSION "1.2"
+#define NVRAM_VERSION "1.3"
#include <linux/module.h>
#include <linux/smp_lock.h>
@@ -46,7 +47,7 @@
/* select machine configuration */
#if defined(CONFIG_ATARI)
# define MACH ATARI
-#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) /* and others?? */
+#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) /* and ?? */
# define MACH PC
#else
# error Cannot build nvram driver for this machine configuration.
@@ -106,10 +107,11 @@
#include <linux/mc146818rtc.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
static DEFINE_SPINLOCK(nvram_state_lock);
@@ -122,8 +124,8 @@ static int mach_check_checksum(void);
static void mach_set_checksum(void);
#ifdef CONFIG_PROC_FS
-static int mach_proc_infos(unsigned char *contents, char *buffer, int *len,
- off_t *begin, off_t offset, int size);
+static void mach_proc_infos(unsigned char *contents, struct seq_file *seq,
+ void *offset);
#endif
/*
@@ -133,18 +135,17 @@ static int mach_proc_infos(unsigned char *contents, char *buffer, int *len,
*
* It is worth noting that these functions all access bytes of general
* purpose memory in the NVRAM - that is to say, they all add the
- * NVRAM_FIRST_BYTE offset. Pass them offsets into NVRAM as if you did not
+ * NVRAM_FIRST_BYTE offset. Pass them offsets into NVRAM as if you did not
* know about the RTC cruft.
*/
-unsigned char
-__nvram_read_byte(int i)
+unsigned char __nvram_read_byte(int i)
{
return CMOS_READ(NVRAM_FIRST_BYTE + i);
}
+EXPORT_SYMBOL(__nvram_read_byte);
-unsigned char
-nvram_read_byte(int i)
+unsigned char nvram_read_byte(int i)
{
unsigned long flags;
unsigned char c;
@@ -154,16 +155,16 @@ nvram_read_byte(int i)
spin_unlock_irqrestore(&rtc_lock, flags);
return c;
}
+EXPORT_SYMBOL(nvram_read_byte);
/* This races nicely with trying to read with checksum checking (nvram_read) */
-void
-__nvram_write_byte(unsigned char c, int i)
+void __nvram_write_byte(unsigned char c, int i)
{
CMOS_WRITE(c, NVRAM_FIRST_BYTE + i);
}
+EXPORT_SYMBOL(__nvram_write_byte);
-void
-nvram_write_byte(unsigned char c, int i)
+void nvram_write_byte(unsigned char c, int i)
{
unsigned long flags;
@@ -171,15 +172,15 @@ nvram_write_byte(unsigned char c, int i)
__nvram_write_byte(c, i);
spin_unlock_irqrestore(&rtc_lock, flags);
}
+EXPORT_SYMBOL(nvram_write_byte);
-int
-__nvram_check_checksum(void)
+int __nvram_check_checksum(void)
{
return mach_check_checksum();
}
+EXPORT_SYMBOL(__nvram_check_checksum);
-int
-nvram_check_checksum(void)
+int nvram_check_checksum(void)
{
unsigned long flags;
int rv;
@@ -189,16 +190,15 @@ nvram_check_checksum(void)
spin_unlock_irqrestore(&rtc_lock, flags);
return rv;
}
+EXPORT_SYMBOL(nvram_check_checksum);
-static void
-__nvram_set_checksum(void)
+static void __nvram_set_checksum(void)
{
mach_set_checksum();
}
#if 0
-void
-nvram_set_checksum(void)
+void nvram_set_checksum(void)
{
unsigned long flags;
@@ -212,7 +212,7 @@ nvram_set_checksum(void)
* The are the file operation function for user access to /dev/nvram
*/
-static loff_t nvram_llseek(struct file *file,loff_t offset, int origin )
+static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
{
lock_kernel();
switch (origin) {
@@ -230,8 +230,8 @@ static loff_t nvram_llseek(struct file *file,loff_t offset, int origin )
return (offset >= 0) ? (file->f_pos = offset) : -EINVAL;
}
-static ssize_t
-nvram_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+static ssize_t nvram_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
{
unsigned char contents[NVRAM_BYTES];
unsigned i = *ppos;
@@ -254,13 +254,13 @@ nvram_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
return tmp - contents;
- checksum_err:
+checksum_err:
spin_unlock_irq(&rtc_lock);
return -EIO;
}
-static ssize_t
-nvram_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t nvram_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
unsigned char contents[NVRAM_BYTES];
unsigned i = *ppos;
@@ -287,14 +287,13 @@ nvram_write(struct file *file, const char __user *buf, size_t count, loff_t *ppo
return tmp - contents;
- checksum_err:
+checksum_err:
spin_unlock_irq(&rtc_lock);
return -EIO;
}
-static int
-nvram_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static int nvram_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int i;
@@ -315,7 +314,7 @@ nvram_ioctl(struct inode *inode, struct file *file,
return 0;
case NVRAM_SETCKS:
- /* just set checksum, contents unchanged (maybe useful after
+ /* just set checksum, contents unchanged (maybe useful after
* checksum garbaged somehow...) */
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@@ -330,8 +329,7 @@ nvram_ioctl(struct inode *inode, struct file *file,
}
}
-static int
-nvram_open(struct inode *inode, struct file *file)
+static int nvram_open(struct inode *inode, struct file *file)
{
lock_kernel();
spin_lock(&nvram_state_lock);
@@ -356,8 +354,7 @@ nvram_open(struct inode *inode, struct file *file)
return 0;
}
-static int
-nvram_release(struct inode *inode, struct file *file)
+static int nvram_release(struct inode *inode, struct file *file)
{
spin_lock(&nvram_state_lock);
@@ -375,48 +372,47 @@ nvram_release(struct inode *inode, struct file *file)
}
#ifndef CONFIG_PROC_FS
-static int
-nvram_read_proc(char *buffer, char **start, off_t offset,
- int size, int *eof, void *data)
+static int nvram_add_proc_fs(void)
{
return 0;
}
+
#else
-static int
-nvram_read_proc(char *buffer, char **start, off_t offset,
- int size, int *eof, void *data)
+static int nvram_proc_read(struct seq_file *seq, void *offset)
{
unsigned char contents[NVRAM_BYTES];
- int i, len = 0;
- off_t begin = 0;
+ int i = 0;
spin_lock_irq(&rtc_lock);
for (i = 0; i < NVRAM_BYTES; ++i)
contents[i] = __nvram_read_byte(i);
spin_unlock_irq(&rtc_lock);
- *eof = mach_proc_infos(contents, buffer, &len, &begin, offset, size);
+ mach_proc_infos(contents, seq, offset);
- if (offset >= begin + len)
- return 0;
- *start = buffer + (offset - begin);
- return (size < begin + len - offset) ? size : begin + len - offset;
+ return 0;
+}
+static int nvram_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, nvram_proc_read, NULL);
}
-/* This macro frees the machine specific function from bounds checking and
- * this like that... */
-#define PRINT_PROC(fmt,args...) \
- do { \
- *len += sprintf(buffer+*len, fmt, ##args); \
- if (*begin + *len > offset + size) \
- return 0; \
- if (*begin + *len < offset) { \
- *begin += *len; \
- *len = 0; \
- } \
- } while(0)
+static const struct file_operations nvram_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = nvram_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int nvram_add_proc_fs(void)
+{
+ if (!proc_create("driver/nvram", 0, NULL, &nvram_proc_fops))
+ return -ENOMEM;
+ return 0;
+}
#endif /* CONFIG_PROC_FS */
@@ -436,8 +432,7 @@ static struct miscdevice nvram_dev = {
&nvram_fops
};
-static int __init
-nvram_init(void)
+static int __init nvram_init(void)
{
int ret;
@@ -451,23 +446,21 @@ nvram_init(void)
NVRAM_MINOR);
goto out;
}
- if (!create_proc_read_entry("driver/nvram", 0, NULL, nvram_read_proc,
- NULL)) {
+ ret = nvram_add_proc_fs();
+ if (ret) {
printk(KERN_ERR "nvram: can't create /proc/driver/nvram\n");
- ret = -ENOMEM;
goto outmisc;
}
ret = 0;
printk(KERN_INFO "Non-volatile memory driver v" NVRAM_VERSION "\n");
- out:
+out:
return ret;
- outmisc:
+outmisc:
misc_deregister(&nvram_dev);
goto out;
}
-static void __exit
-nvram_cleanup_module(void)
+static void __exit nvram_cleanup_module(void)
{
remove_proc_entry("driver/nvram", NULL);
misc_deregister(&nvram_dev);
@@ -482,8 +475,7 @@ module_exit(nvram_cleanup_module);
#if MACH == PC
-static int
-pc_check_checksum(void)
+static int pc_check_checksum(void)
{
int i;
unsigned short sum = 0;
@@ -493,11 +485,10 @@ pc_check_checksum(void)
sum += __nvram_read_byte(i);
expect = __nvram_read_byte(PC_CKS_LOC)<<8 |
__nvram_read_byte(PC_CKS_LOC+1);
- return ((sum & 0xffff) == expect);
+ return (sum & 0xffff) == expect;
}
-static void
-pc_set_checksum(void)
+static void pc_set_checksum(void)
{
int i;
unsigned short sum = 0;
@@ -522,9 +513,8 @@ static char *gfx_types[] = {
"monochrome",
};
-static int
-pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
- off_t *begin, off_t offset, int size)
+static void pc_proc_infos(unsigned char *nvram, struct seq_file *seq,
+ void *offset)
{
int checksum;
int type;
@@ -533,56 +523,57 @@ pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
checksum = __nvram_check_checksum();
spin_unlock_irq(&rtc_lock);
- PRINT_PROC("Checksum status: %svalid\n", checksum ? "" : "not ");
+ seq_printf(seq, "Checksum status: %svalid\n", checksum ? "" : "not ");
- PRINT_PROC("# floppies : %d\n",
+ seq_printf(seq, "# floppies : %d\n",
(nvram[6] & 1) ? (nvram[6] >> 6) + 1 : 0);
- PRINT_PROC("Floppy 0 type : ");
+ seq_printf(seq, "Floppy 0 type : ");
type = nvram[2] >> 4;
if (type < ARRAY_SIZE(floppy_types))
- PRINT_PROC("%s\n", floppy_types[type]);
+ seq_printf(seq, "%s\n", floppy_types[type]);
else
- PRINT_PROC("%d (unknown)\n", type);
- PRINT_PROC("Floppy 1 type : ");
+ seq_printf(seq, "%d (unknown)\n", type);
+ seq_printf(seq, "Floppy 1 type : ");
type = nvram[2] & 0x0f;
if (type < ARRAY_SIZE(floppy_types))
- PRINT_PROC("%s\n", floppy_types[type]);
+ seq_printf(seq, "%s\n", floppy_types[type]);
else
- PRINT_PROC("%d (unknown)\n", type);
+ seq_printf(seq, "%d (unknown)\n", type);
- PRINT_PROC("HD 0 type : ");
+ seq_printf(seq, "HD 0 type : ");
type = nvram[4] >> 4;
if (type)
- PRINT_PROC("%02x\n", type == 0x0f ? nvram[11] : type);
+ seq_printf(seq, "%02x\n", type == 0x0f ? nvram[11] : type);
else
- PRINT_PROC("none\n");
+ seq_printf(seq, "none\n");
- PRINT_PROC("HD 1 type : ");
+ seq_printf(seq, "HD 1 type : ");
type = nvram[4] & 0x0f;
if (type)
- PRINT_PROC("%02x\n", type == 0x0f ? nvram[12] : type);
+ seq_printf(seq, "%02x\n", type == 0x0f ? nvram[12] : type);
else
- PRINT_PROC("none\n");
+ seq_printf(seq, "none\n");
- PRINT_PROC("HD type 48 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
+ seq_printf(seq, "HD type 48 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
nvram[18] | (nvram[19] << 8),
nvram[20], nvram[25],
nvram[21] | (nvram[22] << 8), nvram[23] | (nvram[24] << 8));
- PRINT_PROC("HD type 49 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
+ seq_printf(seq, "HD type 49 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
nvram[39] | (nvram[40] << 8),
nvram[41], nvram[46],
nvram[42] | (nvram[43] << 8), nvram[44] | (nvram[45] << 8));
- PRINT_PROC("DOS base memory: %d kB\n", nvram[7] | (nvram[8] << 8));
- PRINT_PROC("Extended memory: %d kB (configured), %d kB (tested)\n",
+ seq_printf(seq, "DOS base memory: %d kB\n", nvram[7] | (nvram[8] << 8));
+ seq_printf(seq, "Extended memory: %d kB (configured), %d kB (tested)\n",
nvram[9] | (nvram[10] << 8), nvram[34] | (nvram[35] << 8));
- PRINT_PROC("Gfx adapter : %s\n", gfx_types[(nvram[6] >> 4) & 3]);
+ seq_printf(seq, "Gfx adapter : %s\n",
+ gfx_types[(nvram[6] >> 4) & 3]);
- PRINT_PROC("FPU : %sinstalled\n",
+ seq_printf(seq, "FPU : %sinstalled\n",
(nvram[6] & 2) ? "" : "not ");
- return 1;
+ return;
}
#endif
@@ -590,20 +581,18 @@ pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
#if MACH == ATARI
-static int
-atari_check_checksum(void)
+static int atari_check_checksum(void)
{
int i;
unsigned char sum = 0;
for (i = ATARI_CKS_RANGE_START; i <= ATARI_CKS_RANGE_END; ++i)
sum += __nvram_read_byte(i);
- return (__nvram_read_byte(ATARI_CKS_LOC) == (~sum & 0xff) &&
- __nvram_read_byte(ATARI_CKS_LOC + 1) == (sum & 0xff));
+ return (__nvram_read_byte(ATARI_CKS_LOC) == (~sum & 0xff)) &&
+ (__nvram_read_byte(ATARI_CKS_LOC + 1) == (sum & 0xff));
}
-static void
-atari_set_checksum(void)
+static void atari_set_checksum(void)
{
int i;
unsigned char sum = 0;
@@ -654,82 +643,75 @@ static char *colors[] = {
"2", "4", "16", "256", "65536", "??", "??", "??"
};
-static int
-atari_proc_infos(unsigned char *nvram, char *buffer, int *len,
- off_t *begin, off_t offset, int size)
+static void atari_proc_infos(unsigned char *nvram, struct seq_file *seq,
+ void *offset)
{
int checksum = nvram_check_checksum();
int i;
unsigned vmode;
- PRINT_PROC("Checksum status : %svalid\n", checksum ? "" : "not ");
+ seq_printf(seq, "Checksum status : %svalid\n", checksum ? "" : "not ");
- PRINT_PROC("Boot preference : ");
+ seq_printf(seq, "Boot preference : ");
for (i = ARRAY_SIZE(boot_prefs) - 1; i >= 0; --i) {
if (nvram[1] == boot_prefs[i].val) {
- PRINT_PROC("%s\n", boot_prefs[i].name);
+ seq_printf(seq, "%s\n", boot_prefs[i].name);
break;
}
}
if (i < 0)
- PRINT_PROC("0x%02x (undefined)\n", nvram[1]);
+ seq_printf(seq, "0x%02x (undefined)\n", nvram[1]);
- PRINT_PROC("SCSI arbitration : %s\n",
+ seq_printf(seq, "SCSI arbitration : %s\n",
(nvram[16] & 0x80) ? "on" : "off");
- PRINT_PROC("SCSI host ID : ");
+ seq_printf(seq, "SCSI host ID : ");
if (nvram[16] & 0x80)
- PRINT_PROC("%d\n", nvram[16] & 7);
+ seq_printf(seq, "%d\n", nvram[16] & 7);
else
- PRINT_PROC("n/a\n");
+ seq_printf(seq, "n/a\n");
/* the following entries are defined only for the Falcon */
if ((atari_mch_cookie >> 16) != ATARI_MCH_FALCON)
- return 1;
+ return;
- PRINT_PROC("OS language : ");
+ seq_printf(seq, "OS language : ");
if (nvram[6] < ARRAY_SIZE(languages))
- PRINT_PROC("%s\n", languages[nvram[6]]);
+ seq_printf(seq, "%s\n", languages[nvram[6]]);
else
- PRINT_PROC("%u (undefined)\n", nvram[6]);
- PRINT_PROC("Keyboard language: ");
+ seq_printf(seq, "%u (undefined)\n", nvram[6]);
+ seq_printf(seq, "Keyboard language: ");
if (nvram[7] < ARRAY_SIZE(languages))
- PRINT_PROC("%s\n", languages[nvram[7]]);
+ seq_printf(seq, "%s\n", languages[nvram[7]]);
else
- PRINT_PROC("%u (undefined)\n", nvram[7]);
- PRINT_PROC("Date format : ");
- PRINT_PROC(dateformat[nvram[8] & 7],
+ seq_printf(seq, "%u (undefined)\n", nvram[7]);
+ seq_printf(seq, "Date format : ");
+ seq_printf(seq, dateformat[nvram[8] & 7],
nvram[9] ? nvram[9] : '/', nvram[9] ? nvram[9] : '/');
- PRINT_PROC(", %dh clock\n", nvram[8] & 16 ? 24 : 12);
- PRINT_PROC("Boot delay : ");
+ seq_printf(seq, ", %dh clock\n", nvram[8] & 16 ? 24 : 12);
+ seq_printf(seq, "Boot delay : ");
if (nvram[10] == 0)
- PRINT_PROC("default");
+ seq_printf(seq, "default");
else
- PRINT_PROC("%ds%s\n", nvram[10],
+ seq_printf(seq, "%ds%s\n", nvram[10],
nvram[10] < 8 ? ", no memory test" : "");
vmode = (nvram[14] << 8) || nvram[15];
- PRINT_PROC("Video mode : %s colors, %d columns, %s %s monitor\n",
+ seq_printf(seq,
+ "Video mode : %s colors, %d columns, %s %s monitor\n",
colors[vmode & 7],
vmode & 8 ? 80 : 40,
vmode & 16 ? "VGA" : "TV", vmode & 32 ? "PAL" : "NTSC");
- PRINT_PROC(" %soverscan, compat. mode %s%s\n",
+ seq_printf(seq, " %soverscan, compat. mode %s%s\n",
vmode & 64 ? "" : "no ",
vmode & 128 ? "on" : "off",
vmode & 256 ?
(vmode & 16 ? ", line doubling" : ", half screen") : "");
- return 1;
+ return;
}
#endif
#endif /* MACH == ATARI */
MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(__nvram_read_byte);
-EXPORT_SYMBOL(nvram_read_byte);
-EXPORT_SYMBOL(__nvram_write_byte);
-EXPORT_SYMBOL(nvram_write_byte);
-EXPORT_SYMBOL(__nvram_check_checksum);
-EXPORT_SYMBOL(nvram_check_checksum);
MODULE_ALIAS_MISCDEV(NVRAM_MINOR);
diff --git a/drivers/char/nwflash.c b/drivers/char/nwflash.c
index 006be92ee3f..8c7df5ba088 100644
--- a/drivers/char/nwflash.c
+++ b/drivers/char/nwflash.c
@@ -58,8 +58,6 @@ static volatile unsigned char *FLASH_BASE;
static int gbFlashSize = KFLASH_SIZE;
static DEFINE_MUTEX(nwflash_mutex);
-extern spinlock_t gpio_lock;
-
static int get_flash_id(void)
{
volatile unsigned int c1, c2;
@@ -616,9 +614,9 @@ static void kick_open(void)
* we want to write a bit pattern XXX1 to Xilinx to enable
* the write gate, which will be open for about the next 2ms.
*/
- spin_lock_irqsave(&gpio_lock, flags);
- cpld_modify(1, 1);
- spin_unlock_irqrestore(&gpio_lock, flags);
+ spin_lock_irqsave(&nw_gpio_lock, flags);
+ nw_cpld_modify(CPLD_FLASH_WR_ENABLE, CPLD_FLASH_WR_ENABLE);
+ spin_unlock_irqrestore(&nw_gpio_lock, flags);
/*
* let the ISA bus to catch on...
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 4d64a02612a..dc073e167ab 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -138,20 +138,15 @@ struct _input_signal_events {
*/
typedef struct _mgslpc_info {
+ struct tty_port port;
void *if_ptr; /* General purpose pointer (used by SPPP) */
int magic;
- int flags;
- int count; /* count of opens */
int line;
- unsigned short close_delay;
- unsigned short closing_wait; /* time to wait before closing */
struct mgsl_icount icount;
- struct tty_struct *tty;
int timeout;
int x_char; /* xon/xoff character */
- int blocked_open; /* # of blocked opens */
unsigned char read_status_mask;
unsigned char ignore_status_mask;
@@ -170,9 +165,6 @@ typedef struct _mgslpc_info {
int rx_buf_count; /* total number of rx buffers */
int rx_frame_count; /* number of full rx buffers */
- wait_queue_head_t open_wait;
- wait_queue_head_t close_wait;
-
wait_queue_head_t status_event_wait_q;
wait_queue_head_t event_wait_q;
struct timer_list tx_timer; /* HDLC transmit timeout timer */
@@ -375,7 +367,7 @@ static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short
static void rx_start(MGSLPC_INFO *info);
static void rx_stop(MGSLPC_INFO *info);
-static void tx_start(MGSLPC_INFO *info);
+static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty);
static void tx_stop(MGSLPC_INFO *info);
static void tx_set_idle(MGSLPC_INFO *info);
@@ -389,7 +381,8 @@ static void async_mode(MGSLPC_INFO *info);
static void tx_timeout(unsigned long context);
-static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg);
+static int carrier_raised(struct tty_port *port);
+static void raise_dtr_rts(struct tty_port *port);
#if SYNCLINK_GENERIC_HDLC
#define dev_to_port(D) (dev_to_hdlc(D)->priv)
@@ -410,7 +403,7 @@ static void release_resources(MGSLPC_INFO *info);
static void mgslpc_add_device(MGSLPC_INFO *info);
static void mgslpc_remove_device(MGSLPC_INFO *info);
-static bool rx_get_frame(MGSLPC_INFO *info);
+static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty);
static void rx_reset_buffers(MGSLPC_INFO *info);
static int rx_alloc_buffers(MGSLPC_INFO *info);
static void rx_free_buffers(MGSLPC_INFO *info);
@@ -421,7 +414,7 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id);
* Bottom half interrupt handlers
*/
static void bh_handler(struct work_struct *work);
-static void bh_transmit(MGSLPC_INFO *info);
+static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty);
static void bh_status(MGSLPC_INFO *info);
/*
@@ -432,10 +425,10 @@ static int tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear);
static int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount);
static int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params);
-static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params);
+static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty);
static int get_txidle(MGSLPC_INFO *info, int __user *idle_mode);
static int set_txidle(MGSLPC_INFO *info, int idle_mode);
-static int set_txenable(MGSLPC_INFO *info, int enable);
+static int set_txenable(MGSLPC_INFO *info, int enable, struct tty_struct *tty);
static int tx_abort(MGSLPC_INFO *info);
static int set_rxenable(MGSLPC_INFO *info, int enable);
static int wait_events(MGSLPC_INFO *info, int __user *mask);
@@ -474,7 +467,7 @@ static struct tty_driver *serial_driver;
/* number of characters left in xmit buffer before we ask for more */
#define WAKEUP_CHARS 256
-static void mgslpc_change_params(MGSLPC_INFO *info);
+static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty);
static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout);
/* PCMCIA prototypes */
@@ -517,6 +510,11 @@ static void ldisc_receive_buf(struct tty_struct *tty,
}
}
+static const struct tty_port_operations mgslpc_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts
+};
+
static int mgslpc_probe(struct pcmcia_device *link)
{
MGSLPC_INFO *info;
@@ -532,12 +530,12 @@ static int mgslpc_probe(struct pcmcia_device *link)
}
info->magic = MGSLPC_MAGIC;
+ tty_port_init(&info->port);
+ info->port.ops = &mgslpc_port_ops;
INIT_WORK(&info->task, bh_handler);
info->max_frame_size = 4096;
- info->close_delay = 5*HZ/10;
- info->closing_wait = 30*HZ;
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
+ info->port.close_delay = 5*HZ/10;
+ info->port.closing_wait = 30*HZ;
init_waitqueue_head(&info->status_event_wait_q);
init_waitqueue_head(&info->event_wait_q);
spin_lock_init(&info->lock);
@@ -784,7 +782,7 @@ static void tx_release(struct tty_struct *tty)
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_enabled)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -823,6 +821,7 @@ static int bh_action(MGSLPC_INFO *info)
static void bh_handler(struct work_struct *work)
{
MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task);
+ struct tty_struct *tty;
int action;
if (!info)
@@ -833,6 +832,7 @@ static void bh_handler(struct work_struct *work)
__FILE__,__LINE__,info->device_name);
info->bh_running = true;
+ tty = tty_port_tty_get(&info->port);
while((action = bh_action(info)) != 0) {
@@ -844,10 +844,10 @@ static void bh_handler(struct work_struct *work)
switch (action) {
case BH_RECEIVE:
- while(rx_get_frame(info));
+ while(rx_get_frame(info, tty));
break;
case BH_TRANSMIT:
- bh_transmit(info);
+ bh_transmit(info, tty);
break;
case BH_STATUS:
bh_status(info);
@@ -859,14 +859,14 @@ static void bh_handler(struct work_struct *work)
}
}
+ tty_kref_put(tty);
if (debug_level >= DEBUG_LEVEL_BH)
printk( "%s(%d):bh_handler(%s) exit\n",
__FILE__,__LINE__,info->device_name);
}
-static void bh_transmit(MGSLPC_INFO *info)
+static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty)
{
- struct tty_struct *tty = info->tty;
if (debug_level >= DEBUG_LEVEL_BH)
printk("bh_transmit() entry on %s\n", info->device_name);
@@ -945,12 +945,11 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom)
issue_command(info, CHA, CMD_RXFIFO);
}
-static void rx_ready_async(MGSLPC_INFO *info, int tcd)
+static void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty)
{
unsigned char data, status, flag;
int fifo_count;
int work = 0;
- struct tty_struct *tty = info->tty;
struct mgsl_icount *icount = &info->icount;
if (tcd) {
@@ -1013,7 +1012,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd)
}
-static void tx_done(MGSLPC_INFO *info)
+static void tx_done(MGSLPC_INFO *info, struct tty_struct *tty)
{
if (!info->tx_active)
return;
@@ -1042,7 +1041,7 @@ static void tx_done(MGSLPC_INFO *info)
else
#endif
{
- if (info->tty->stopped || info->tty->hw_stopped) {
+ if (tty->stopped || tty->hw_stopped) {
tx_stop(info);
return;
}
@@ -1050,7 +1049,7 @@ static void tx_done(MGSLPC_INFO *info)
}
}
-static void tx_ready(MGSLPC_INFO *info)
+static void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned char fifo_count = 32;
int c;
@@ -1062,7 +1061,7 @@ static void tx_ready(MGSLPC_INFO *info)
if (!info->tx_active)
return;
} else {
- if (info->tty->stopped || info->tty->hw_stopped) {
+ if (tty->stopped || tty->hw_stopped) {
tx_stop(info);
return;
}
@@ -1099,7 +1098,7 @@ static void tx_ready(MGSLPC_INFO *info)
}
}
-static void cts_change(MGSLPC_INFO *info)
+static void cts_change(MGSLPC_INFO *info, struct tty_struct *tty)
{
get_signals(info);
if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
@@ -1112,14 +1111,14 @@ static void cts_change(MGSLPC_INFO *info)
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
- if (info->flags & ASYNC_CTS_FLOW) {
- if (info->tty->hw_stopped) {
+ if (info->port.flags & ASYNC_CTS_FLOW) {
+ if (tty->hw_stopped) {
if (info->serial_signals & SerialSignal_CTS) {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("CTS tx start...");
- if (info->tty)
- info->tty->hw_stopped = 0;
- tx_start(info);
+ if (tty)
+ tty->hw_stopped = 0;
+ tx_start(info, tty);
info->pending_bh |= BH_TRANSMIT;
return;
}
@@ -1127,8 +1126,8 @@ static void cts_change(MGSLPC_INFO *info)
if (!(info->serial_signals & SerialSignal_CTS)) {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("CTS tx stop...");
- if (info->tty)
- info->tty->hw_stopped = 1;
+ if (tty)
+ tty->hw_stopped = 1;
tx_stop(info);
}
}
@@ -1136,7 +1135,7 @@ static void cts_change(MGSLPC_INFO *info)
info->pending_bh |= BH_STATUS;
}
-static void dcd_change(MGSLPC_INFO *info)
+static void dcd_change(MGSLPC_INFO *info, struct tty_struct *tty)
{
get_signals(info);
if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
@@ -1158,17 +1157,17 @@ static void dcd_change(MGSLPC_INFO *info)
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
- if (info->flags & ASYNC_CHECK_CD) {
+ if (info->port.flags & ASYNC_CHECK_CD) {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s CD now %s...", info->device_name,
(info->serial_signals & SerialSignal_DCD) ? "on" : "off");
if (info->serial_signals & SerialSignal_DCD)
- wake_up_interruptible(&info->open_wait);
+ wake_up_interruptible(&info->port.open_wait);
else {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("doing serial hangup...");
- if (info->tty)
- tty_hangup(info->tty);
+ if (tty)
+ tty_hangup(tty);
}
}
info->pending_bh |= BH_STATUS;
@@ -1214,6 +1213,7 @@ static void ri_change(MGSLPC_INFO *info)
static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
{
MGSLPC_INFO *info = dev_id;
+ struct tty_struct *tty;
unsigned short isr;
unsigned char gis, pis;
int count=0;
@@ -1224,6 +1224,8 @@ static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
if (!(info->p_dev->_locked))
return IRQ_HANDLED;
+ tty = tty_port_tty_get(&info->port);
+
spin_lock(&info->lock);
while ((gis = read_reg(info, CHA + GIS))) {
@@ -1239,9 +1241,9 @@ static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
if (gis & (BIT1 + BIT0)) {
isr = read_reg16(info, CHB + ISR);
if (isr & IRQ_DCD)
- dcd_change(info);
+ dcd_change(info, tty);
if (isr & IRQ_CTS)
- cts_change(info);
+ cts_change(info, tty);
}
if (gis & (BIT3 + BIT2))
{
@@ -1258,8 +1260,8 @@ static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
}
if (isr & IRQ_BREAK_ON) {
info->icount.brk++;
- if (info->flags & ASYNC_SAK)
- do_SAK(info->tty);
+ if (info->port.flags & ASYNC_SAK)
+ do_SAK(tty);
}
if (isr & IRQ_RXTIME) {
issue_command(info, CHA, CMD_RXFIFO_READ);
@@ -1268,7 +1270,7 @@ static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
if (info->params.mode == MGSL_MODE_HDLC)
rx_ready_hdlc(info, isr & IRQ_RXEOM);
else
- rx_ready_async(info, isr & IRQ_RXEOM);
+ rx_ready_async(info, isr & IRQ_RXEOM, tty);
}
/* transmit IRQs */
@@ -1277,14 +1279,14 @@ static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
info->icount.txabort++;
else
info->icount.txunder++;
- tx_done(info);
+ tx_done(info, tty);
}
else if (isr & IRQ_ALLSENT) {
info->icount.txok++;
- tx_done(info);
+ tx_done(info, tty);
}
else if (isr & IRQ_TXFIFO)
- tx_ready(info);
+ tx_ready(info, tty);
}
if (gis & BIT7) {
pis = read_reg(info, CHA + PIS);
@@ -1308,6 +1310,7 @@ static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
}
spin_unlock(&info->lock);
+ tty_kref_put(tty);
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):mgslpc_isr(%d)exit.\n",
@@ -1318,14 +1321,14 @@ static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
/* Initialize and start device.
*/
-static int startup(MGSLPC_INFO * info)
+static int startup(MGSLPC_INFO * info, struct tty_struct *tty)
{
int retval = 0;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):startup(%s)\n",__FILE__,__LINE__,info->device_name);
- if (info->flags & ASYNC_INITIALIZED)
+ if (info->port.flags & ASYNC_INITIALIZED)
return 0;
if (!info->tx_buf) {
@@ -1352,30 +1355,30 @@ static int startup(MGSLPC_INFO * info)
retval = adapter_test(info);
if ( retval ) {
- if (capable(CAP_SYS_ADMIN) && info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
+ if (capable(CAP_SYS_ADMIN) && tty)
+ set_bit(TTY_IO_ERROR, &tty->flags);
release_resources(info);
return retval;
}
/* program hardware for current parameters */
- mgslpc_change_params(info);
+ mgslpc_change_params(info, tty);
- if (info->tty)
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ if (tty)
+ clear_bit(TTY_IO_ERROR, &tty->flags);
- info->flags |= ASYNC_INITIALIZED;
+ info->port.flags |= ASYNC_INITIALIZED;
return 0;
}
/* Called by mgslpc_close() and mgslpc_hangup() to shutdown hardware
*/
-static void shutdown(MGSLPC_INFO * info)
+static void shutdown(MGSLPC_INFO * info, struct tty_struct *tty)
{
unsigned long flags;
- if (!(info->flags & ASYNC_INITIALIZED))
+ if (!(info->port.flags & ASYNC_INITIALIZED))
return;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1402,7 +1405,7 @@ static void shutdown(MGSLPC_INFO * info)
/* TODO:disable interrupts instead of reset to preserve signal states */
reset_device(info);
- if (!info->tty || info->tty->termios->c_cflag & HUPCL) {
+ if (!tty || tty->termios->c_cflag & HUPCL) {
info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
set_signals(info);
}
@@ -1411,13 +1414,13 @@ static void shutdown(MGSLPC_INFO * info)
release_resources(info);
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
+ if (tty)
+ set_bit(TTY_IO_ERROR, &tty->flags);
- info->flags &= ~ASYNC_INITIALIZED;
+ info->port.flags &= ~ASYNC_INITIALIZED;
}
-static void mgslpc_program_hw(MGSLPC_INFO *info)
+static void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned long flags;
@@ -1443,7 +1446,7 @@ static void mgslpc_program_hw(MGSLPC_INFO *info)
port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI);
get_signals(info);
- if (info->netcount || info->tty->termios->c_cflag & CREAD)
+ if (info->netcount || (tty && (tty->termios->c_cflag & CREAD)))
rx_start(info);
spin_unlock_irqrestore(&info->lock,flags);
@@ -1451,19 +1454,19 @@ static void mgslpc_program_hw(MGSLPC_INFO *info)
/* Reconfigure adapter based on new parameters
*/
-static void mgslpc_change_params(MGSLPC_INFO *info)
+static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned cflag;
int bits_per_char;
- if (!info->tty || !info->tty->termios)
+ if (!tty || !tty->termios)
return;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_change_params(%s)\n",
__FILE__,__LINE__, info->device_name );
- cflag = info->tty->termios->c_cflag;
+ cflag = tty->termios->c_cflag;
/* if B0 rate (hangup) specified then negate DTR and RTS */
/* otherwise assert DTR and RTS */
@@ -1510,7 +1513,7 @@ static void mgslpc_change_params(MGSLPC_INFO *info)
* current data rate.
*/
if (info->params.data_rate <= 460800) {
- info->params.data_rate = tty_get_baud_rate(info->tty);
+ info->params.data_rate = tty_get_baud_rate(tty);
}
if ( info->params.data_rate ) {
@@ -1520,24 +1523,24 @@ static void mgslpc_change_params(MGSLPC_INFO *info)
info->timeout += HZ/50; /* Add .02 seconds of slop */
if (cflag & CRTSCTS)
- info->flags |= ASYNC_CTS_FLOW;
+ info->port.flags |= ASYNC_CTS_FLOW;
else
- info->flags &= ~ASYNC_CTS_FLOW;
+ info->port.flags &= ~ASYNC_CTS_FLOW;
if (cflag & CLOCAL)
- info->flags &= ~ASYNC_CHECK_CD;
+ info->port.flags &= ~ASYNC_CHECK_CD;
else
- info->flags |= ASYNC_CHECK_CD;
+ info->port.flags |= ASYNC_CHECK_CD;
/* process tty input control flags */
info->read_status_mask = 0;
- if (I_INPCK(info->tty))
+ if (I_INPCK(tty))
info->read_status_mask |= BIT7 | BIT6;
- if (I_IGNPAR(info->tty))
+ if (I_IGNPAR(tty))
info->ignore_status_mask |= BIT7 | BIT6;
- mgslpc_program_hw(info);
+ mgslpc_program_hw(info, tty);
}
/* Add a character to the transmit buffer
@@ -1597,7 +1600,7 @@ static void mgslpc_flush_chars(struct tty_struct *tty)
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -1659,7 +1662,7 @@ start:
if (info->tx_count && !tty->stopped && !tty->hw_stopped) {
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
cleanup:
@@ -1764,7 +1767,7 @@ static void mgslpc_send_xchar(struct tty_struct *tty, char ch)
if (ch) {
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_enabled)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
}
@@ -1862,7 +1865,7 @@ static int get_params(MGSLPC_INFO * info, MGSL_PARAMS __user *user_params)
*
* Returns: 0 if success, otherwise error code
*/
-static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params)
+static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params, struct tty_struct *tty)
{
unsigned long flags;
MGSL_PARAMS tmp_params;
@@ -1883,7 +1886,7 @@ static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params)
memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS));
spin_unlock_irqrestore(&info->lock,flags);
- mgslpc_change_params(info);
+ mgslpc_change_params(info, tty);
return 0;
}
@@ -1944,7 +1947,7 @@ static int set_interface(MGSLPC_INFO * info, int if_mode)
return 0;
}
-static int set_txenable(MGSLPC_INFO * info, int enable)
+static int set_txenable(MGSLPC_INFO * info, int enable, struct tty_struct *tty)
{
unsigned long flags;
@@ -1954,7 +1957,7 @@ static int set_txenable(MGSLPC_INFO * info, int enable)
spin_lock_irqsave(&info->lock,flags);
if (enable) {
if (!info->tx_enabled)
- tx_start(info);
+ tx_start(info, tty);
} else {
if (info->tx_enabled)
tx_stop(info);
@@ -2263,6 +2266,11 @@ static int mgslpc_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
+ int error;
+ struct mgsl_icount cnow; /* kernel counter temps */
+ struct serial_icounter_struct __user *p_cuser; /* user space */
+ void __user *argp = (void __user *)arg;
+ unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__,
@@ -2277,22 +2285,11 @@ static int mgslpc_ioctl(struct tty_struct *tty, struct file * file,
return -EIO;
}
- return ioctl_common(info, cmd, arg);
-}
-
-static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg)
-{
- int error;
- struct mgsl_icount cnow; /* kernel counter temps */
- struct serial_icounter_struct __user *p_cuser; /* user space */
- void __user *argp = (void __user *)arg;
- unsigned long flags;
-
switch (cmd) {
case MGSL_IOCGPARAMS:
return get_params(info, argp);
case MGSL_IOCSPARAMS:
- return set_params(info, argp);
+ return set_params(info, argp, tty);
case MGSL_IOCGTXIDLE:
return get_txidle(info, argp);
case MGSL_IOCSTXIDLE:
@@ -2302,7 +2299,7 @@ static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg)
case MGSL_IOCSIF:
return set_interface(info,(int)arg);
case MGSL_IOCTXENABLE:
- return set_txenable(info,(int)arg);
+ return set_txenable(info,(int)arg, tty);
case MGSL_IOCRXENABLE:
return set_rxenable(info,(int)arg);
case MGSL_IOCTXABORT:
@@ -2369,7 +2366,7 @@ static void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_term
== RELEVANT_IFLAG(old_termios->c_iflag)))
return;
- mgslpc_change_params(info);
+ mgslpc_change_params(info, tty);
/* Handle transition to B0 status */
if (old_termios->c_cflag & CBAUD &&
@@ -2404,81 +2401,34 @@ static void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_term
static void mgslpc_close(struct tty_struct *tty, struct file * filp)
{
MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
+ struct tty_port *port = &info->port;
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close"))
return;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_close(%s) entry, count=%d\n",
- __FILE__,__LINE__, info->device_name, info->count);
-
- if (!info->count)
- return;
+ __FILE__,__LINE__, info->device_name, port->count);
- if (tty_hung_up_p(filp))
- goto cleanup;
-
- if ((tty->count == 1) && (info->count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- printk("mgslpc_close: bad refcount; tty->count is 1, "
- "info->count is %d\n", info->count);
- info->count = 1;
- }
+ WARN_ON(!port->count);
- info->count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->count)
+ if (tty_port_close_start(port, tty, filp) == 0)
goto cleanup;
- info->flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):mgslpc_close(%s) calling tty_wait_until_sent\n",
- __FILE__,__LINE__, info->device_name );
- tty_wait_until_sent(tty, info->closing_wait);
- }
-
- if (info->flags & ASYNC_INITIALIZED)
+ if (port->flags & ASYNC_INITIALIZED)
mgslpc_wait_until_sent(tty, info->timeout);
mgslpc_flush_buffer(tty);
tty_ldisc_flush(tty);
-
- shutdown(info);
-
- tty->closing = 0;
- info->tty = NULL;
-
- if (info->blocked_open) {
- if (info->close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->close_delay));
- }
- wake_up_interruptible(&info->open_wait);
- }
-
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->close_wait);
-
+ shutdown(info, tty);
+
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__,
- tty->driver->name, info->count);
+ tty->driver->name, port->count);
}
/* Wait until the transmitter is empty.
@@ -2498,7 +2448,7 @@ static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout)
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent"))
return;
- if (!(info->flags & ASYNC_INITIALIZED))
+ if (!(info->port.flags & ASYNC_INITIALIZED))
goto exit;
orig_jiffies = jiffies;
@@ -2559,120 +2509,40 @@ static void mgslpc_hangup(struct tty_struct *tty)
return;
mgslpc_flush_buffer(tty);
- shutdown(info);
-
- info->count = 0;
- info->flags &= ~ASYNC_NORMAL_ACTIVE;
- info->tty = NULL;
-
- wake_up_interruptible(&info->open_wait);
+ shutdown(info, tty);
+ tty_port_hangup(&info->port);
}
-/* Block the current process until the specified port
- * is ready to be opened.
- */
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- MGSLPC_INFO *info)
+static int carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- bool do_clocal = false;
- bool extra_count = false;
- unsigned long flags;
-
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready on %s\n",
- __FILE__,__LINE__, tty->driver->name );
-
- if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
- /* nonblock mode is set or port is not enabled */
- /* just verify that callout device is not active */
- info->flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = true;
-
- /* Wait for carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, info->count is dropped by one, so that
- * mgslpc_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
-
- retval = 0;
- add_wait_queue(&info->open_wait, &wait);
-
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready before block on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->count );
-
- spin_lock_irqsave(&info->lock, flags);
- if (!tty_hung_up_p(filp)) {
- extra_count = true;
- info->count--;
- }
- spin_unlock_irqrestore(&info->lock, flags);
- info->blocked_open++;
-
- while (1) {
- if ((tty->termios->c_cflag & CBAUD)) {
- spin_lock_irqsave(&info->lock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- set_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
- }
-
- set_current_state(TASK_INTERRUPTIBLE);
-
- if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){
- retval = (info->flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS;
- break;
- }
-
- spin_lock_irqsave(&info->lock,flags);
- get_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
-
- if (!(info->flags & ASYNC_CLOSING) &&
- (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
- break;
- }
-
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->count );
-
- schedule();
- }
-
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->open_wait, &wait);
+ MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
+ unsigned long flags;
- if (extra_count)
- info->count++;
- info->blocked_open--;
+ spin_lock_irqsave(&info->lock,flags);
+ get_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->count );
+ if (info->serial_signals & SerialSignal_DCD)
+ return 1;
+ return 0;
+}
- if (!retval)
- info->flags |= ASYNC_NORMAL_ACTIVE;
+static void raise_dtr_rts(struct tty_port *port)
+{
+ MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
+ unsigned long flags;
- return retval;
+ spin_lock_irqsave(&info->lock,flags);
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ set_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
}
+
static int mgslpc_open(struct tty_struct *tty, struct file * filp)
{
MGSLPC_INFO *info;
+ struct tty_port *port;
int retval, line;
unsigned long flags;
@@ -2691,23 +2561,24 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open"))
return -ENODEV;
+ port = &info->port;
tty->driver_data = info;
- info->tty = tty;
+ tty_port_tty_set(port, tty);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_open(%s), old ref count = %d\n",
- __FILE__,__LINE__,tty->driver->name, info->count);
+ __FILE__,__LINE__,tty->driver->name, port->count);
/* If port is closing, signal caller to try again */
- if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){
- if (info->flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->close_wait);
- retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){
+ if (port->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&port->close_wait);
+ retval = ((port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
goto cleanup;
}
- info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
@@ -2715,17 +2586,19 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
spin_unlock_irqrestore(&info->netlock, flags);
goto cleanup;
}
- info->count++;
+ spin_lock(&port->lock);
+ port->count++;
+ spin_unlock(&port->lock);
spin_unlock_irqrestore(&info->netlock, flags);
- if (info->count == 1) {
+ if (port->count == 1) {
/* 1st open on this device, init hardware */
- retval = startup(info);
+ retval = startup(info, tty);
if (retval < 0)
goto cleanup;
}
- retval = block_til_ready(tty, filp, info);
+ retval = tty_port_block_til_ready(&info->port, tty, filp);
if (retval) {
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready(%s) returned %d\n",
@@ -2739,13 +2612,6 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
retval = 0;
cleanup:
- if (retval) {
- if (tty->count == 1)
- info->tty = NULL; /* tty layer will release tty struct */
- if(info->count)
- info->count--;
- }
-
return retval;
}
@@ -3500,7 +3366,7 @@ static void rx_start(MGSLPC_INFO *info)
info->rx_enabled = true;
}
-static void tx_start(MGSLPC_INFO *info)
+static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty)
{
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):tx_start(%s)\n",
@@ -3524,11 +3390,11 @@ static void tx_start(MGSLPC_INFO *info)
if (info->params.mode == MGSL_MODE_ASYNC) {
if (!info->tx_active) {
info->tx_active = true;
- tx_ready(info);
+ tx_ready(info, tty);
}
} else {
info->tx_active = true;
- tx_ready(info);
+ tx_ready(info, tty);
mod_timer(&info->tx_timer, jiffies +
msecs_to_jiffies(5000));
}
@@ -3849,13 +3715,12 @@ static void rx_reset_buffers(MGSLPC_INFO *info)
*
* Returns true if frame returned, otherwise false
*/
-static bool rx_get_frame(MGSLPC_INFO *info)
+static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned short status;
RXBUF *buf;
unsigned int framesize = 0;
unsigned long flags;
- struct tty_struct *tty = info->tty;
bool return_frame = false;
if (info->rx_frame_count == 0)
@@ -4075,7 +3940,11 @@ static void tx_timeout(unsigned long context)
hdlcdev_tx_done(info);
else
#endif
- bh_transmit(info);
+ {
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
+ bh_transmit(info, tty);
+ tty_kref_put(tty);
+ }
}
#if SYNCLINK_GENERIC_HDLC
@@ -4094,11 +3963,12 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
unsigned short parity)
{
MGSLPC_INFO *info = dev_to_port(dev);
+ struct tty_struct *tty;
unsigned char new_encoding;
unsigned short new_crctype;
/* return error if TTY interface open */
- if (info->count)
+ if (info->port.count)
return -EBUSY;
switch (encoding)
@@ -4123,8 +3993,11 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
info->params.crc_type = new_crctype;
/* if network interface up, reprogram hardware */
- if (info->netcount)
- mgslpc_program_hw(info);
+ if (info->netcount) {
+ tty = tty_port_tty_get(&info->port);
+ mgslpc_program_hw(info, tty);
+ tty_kref_put(tty);
+ }
return 0;
}
@@ -4165,8 +4038,11 @@ static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
/* start hardware transmitter if necessary */
spin_lock_irqsave(&info->lock,flags);
- if (!info->tx_active)
- tx_start(info);
+ if (!info->tx_active) {
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
+ tx_start(info, tty);
+ tty_kref_put(tty);
+ }
spin_unlock_irqrestore(&info->lock,flags);
return 0;
@@ -4183,6 +4059,7 @@ static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
static int hdlcdev_open(struct net_device *dev)
{
MGSLPC_INFO *info = dev_to_port(dev);
+ struct tty_struct *tty;
int rc;
unsigned long flags;
@@ -4195,7 +4072,7 @@ static int hdlcdev_open(struct net_device *dev)
/* arbitrate between network and tty opens */
spin_lock_irqsave(&info->netlock, flags);
- if (info->count != 0 || info->netcount != 0) {
+ if (info->port.count != 0 || info->netcount != 0) {
printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
spin_unlock_irqrestore(&info->netlock, flags);
return -EBUSY;
@@ -4203,17 +4080,19 @@ static int hdlcdev_open(struct net_device *dev)
info->netcount=1;
spin_unlock_irqrestore(&info->netlock, flags);
+ tty = tty_port_tty_get(&info->port);
/* claim resources and init adapter */
- if ((rc = startup(info)) != 0) {
+ if ((rc = startup(info, tty)) != 0) {
+ tty_kref_put(tty);
spin_lock_irqsave(&info->netlock, flags);
info->netcount=0;
spin_unlock_irqrestore(&info->netlock, flags);
return rc;
}
-
/* assert DTR and RTS, apply hardware settings */
info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- mgslpc_program_hw(info);
+ mgslpc_program_hw(info, tty);
+ tty_kref_put(tty);
/* enable network layer transmit */
dev->trans_start = jiffies;
@@ -4241,6 +4120,7 @@ static int hdlcdev_open(struct net_device *dev)
static int hdlcdev_close(struct net_device *dev)
{
MGSLPC_INFO *info = dev_to_port(dev);
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -4249,8 +4129,8 @@ static int hdlcdev_close(struct net_device *dev)
netif_stop_queue(dev);
/* shutdown adapter and release resources */
- shutdown(info);
-
+ shutdown(info, tty);
+ tty_kref_put(tty);
hdlc_close(dev);
spin_lock_irqsave(&info->netlock, flags);
@@ -4281,7 +4161,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
/* return error if TTY interface open */
- if (info->count)
+ if (info->port.count)
return -EBUSY;
if (cmd != SIOCWANDEV)
@@ -4354,8 +4234,11 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
info->params.clock_speed = 0;
/* if network interface up, reprogram hardware */
- if (info->netcount)
- mgslpc_program_hw(info);
+ if (info->netcount) {
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
+ mgslpc_program_hw(info, tty);
+ tty_kref_put(tty);
+ }
return 0;
default:
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 6d4582712b1..146c97613da 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -5,8 +5,6 @@
*
* Added support for a Unix98-style ptmx device.
* -- C. Scott Ananian <cananian@alumni.princeton.edu>, 14-Jan-1998
- * Added TTY_DO_WRITE_WAKEUP to enable n_tty to send POLL_OUT to
- * waiting writers -- Sapan Bhatia <sapan@corewars.org>
*
* When reading this code see also fs/devpts. In particular note that the
* driver_data field is used by the devpts side as a binding to the devpts
@@ -34,7 +32,7 @@
/* These are global because they are accessed in tty_io.c */
#ifdef CONFIG_UNIX98_PTYS
-struct tty_driver *ptm_driver;
+static struct tty_driver *ptm_driver;
static struct tty_driver *pts_driver;
#endif
@@ -217,7 +215,6 @@ static int pty_open(struct tty_struct *tty, struct file *filp)
clear_bit(TTY_OTHER_CLOSED, &tty->link->flags);
set_bit(TTY_THROTTLED, &tty->flags);
- set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
retval = 0;
out:
return retval;
@@ -230,6 +227,55 @@ static void pty_set_termios(struct tty_struct *tty,
tty->termios->c_cflag |= (CS8 | CREAD);
}
+/**
+ * pty_do_resize - resize event
+ * @tty: tty being resized
+ * @real_tty: real tty (not the same as tty if using a pty/tty pair)
+ * @rows: rows (character)
+ * @cols: cols (character)
+ *
+ * Update the termios variables and send the neccessary signals to
+ * peform a terminal resize correctly
+ */
+
+int pty_resize(struct tty_struct *tty, struct winsize *ws)
+{
+ struct pid *pgrp, *rpgrp;
+ unsigned long flags;
+ struct tty_struct *pty = tty->link;
+
+ /* For a PTY we need to lock the tty side */
+ mutex_lock(&tty->termios_mutex);
+ if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
+ goto done;
+
+ /* Get the PID values and reference them so we can
+ avoid holding the tty ctrl lock while sending signals.
+ We need to lock these individually however. */
+
+ spin_lock_irqsave(&tty->ctrl_lock, flags);
+ pgrp = get_pid(tty->pgrp);
+ spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+
+ spin_lock_irqsave(&pty->ctrl_lock, flags);
+ rpgrp = get_pid(pty->pgrp);
+ spin_unlock_irqrestore(&pty->ctrl_lock, flags);
+
+ if (pgrp)
+ kill_pgrp(pgrp, SIGWINCH, 1);
+ if (rpgrp != pgrp && rpgrp)
+ kill_pgrp(rpgrp, SIGWINCH, 1);
+
+ put_pid(pgrp);
+ put_pid(rpgrp);
+
+ tty->winsize = *ws;
+ pty->winsize = *ws; /* Never used so will go away soon */
+done:
+ mutex_unlock(&tty->termios_mutex);
+ return 0;
+}
+
static int pty_install(struct tty_driver *driver, struct tty_struct *tty)
{
struct tty_struct *o_tty;
@@ -290,6 +336,7 @@ static const struct tty_operations pty_ops = {
.chars_in_buffer = pty_chars_in_buffer,
.unthrottle = pty_unthrottle,
.set_termios = pty_set_termios,
+ .resize = pty_resize
};
/* Traditional BSD devices */
@@ -319,6 +366,7 @@ static const struct tty_operations pty_ops_bsd = {
.unthrottle = pty_unthrottle,
.set_termios = pty_set_termios,
.ioctl = pty_bsd_ioctl,
+ .resize = pty_resize
};
static void __init legacy_pty_init(void)
@@ -561,7 +609,8 @@ static const struct tty_operations ptm_unix98_ops = {
.unthrottle = pty_unthrottle,
.set_termios = pty_set_termios,
.ioctl = pty_unix98_ioctl,
- .shutdown = pty_unix98_shutdown
+ .shutdown = pty_unix98_shutdown,
+ .resize = pty_resize
};
static const struct tty_operations pty_unix98_ops = {
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 675076f5fca..7c13581ca9c 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -407,7 +407,7 @@ struct entropy_store {
/* read-write data: */
spinlock_t lock;
unsigned add_ptr;
- int entropy_count; /* Must at no time exceed ->POOLBITS! */
+ int entropy_count;
int input_rotate;
};
@@ -558,24 +558,43 @@ struct timer_rand_state {
unsigned dont_count_entropy:1;
};
+#ifndef CONFIG_SPARSE_IRQ
+
static struct timer_rand_state *irq_timer_state[NR_IRQS];
static struct timer_rand_state *get_timer_rand_state(unsigned int irq)
{
- if (irq >= nr_irqs)
- return NULL;
-
return irq_timer_state[irq];
}
-static void set_timer_rand_state(unsigned int irq, struct timer_rand_state *state)
+static void set_timer_rand_state(unsigned int irq,
+ struct timer_rand_state *state)
{
- if (irq >= nr_irqs)
- return;
-
irq_timer_state[irq] = state;
}
+#else
+
+static struct timer_rand_state *get_timer_rand_state(unsigned int irq)
+{
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+
+ return desc->timer_rand_state;
+}
+
+static void set_timer_rand_state(unsigned int irq,
+ struct timer_rand_state *state)
+{
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+
+ desc->timer_rand_state = state;
+}
+#endif
+
static struct timer_rand_state input_timer_state;
/*
@@ -748,11 +767,10 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min,
{
unsigned long flags;
- BUG_ON(r->entropy_count > r->poolinfo->POOLBITS);
-
/* Hold lock while accounting */
spin_lock_irqsave(&r->lock, flags);
+ BUG_ON(r->entropy_count > r->poolinfo->POOLBITS);
DEBUG_ENT("trying to extract %d bits from %s\n",
nbytes * 8, r->name);
@@ -933,9 +951,6 @@ void rand_initialize_irq(int irq)
{
struct timer_rand_state *state;
- if (irq >= nr_irqs)
- return;
-
state = get_timer_rand_state(irq);
if (state)
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index a8f68a3f14d..2e8a6eed34b 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -173,7 +173,7 @@ static void rio_disable_tx_interrupts(void *ptr);
static void rio_enable_tx_interrupts(void *ptr);
static void rio_disable_rx_interrupts(void *ptr);
static void rio_enable_rx_interrupts(void *ptr);
-static int rio_get_CD(void *ptr);
+static int rio_carrier_raised(struct tty_port *port);
static void rio_shutdown_port(void *ptr);
static int rio_set_real_termios(void *ptr);
static void rio_hungup(void *ptr);
@@ -224,7 +224,6 @@ static struct real_driver rio_real_driver = {
rio_enable_tx_interrupts,
rio_disable_rx_interrupts,
rio_enable_rx_interrupts,
- rio_get_CD,
rio_shutdown_port,
rio_set_real_termios,
rio_chars_in_buffer,
@@ -476,9 +475,9 @@ static void rio_enable_rx_interrupts(void *ptr)
/* Jeez. Isn't this simple? */
-static int rio_get_CD(void *ptr)
+static int rio_carrier_raised(struct tty_port *port)
{
- struct Port *PortP = ptr;
+ struct Port *PortP = container_of(port, struct Port, gs.port);
int rv;
func_enter();
@@ -797,16 +796,9 @@ static int rio_init_drivers(void)
return 1;
}
-
-static void *ckmalloc(int size)
-{
- void *p;
-
- p = kzalloc(size, GFP_KERNEL);
- return p;
-}
-
-
+static const struct tty_port_operations rio_port_ops = {
+ .carrier_raised = rio_carrier_raised,
+};
static int rio_init_datastructures(void)
{
@@ -826,33 +818,30 @@ static int rio_init_datastructures(void)
#define TMIO_SZ sizeof(struct termios *)
rio_dprintk(RIO_DEBUG_INIT, "getting : %Zd %Zd %Zd %Zd %Zd bytes\n", RI_SZ, RIO_HOSTS * HOST_SZ, RIO_PORTS * PORT_SZ, RIO_PORTS * TMIO_SZ, RIO_PORTS * TMIO_SZ);
- if (!(p = ckmalloc(RI_SZ)))
+ if (!(p = kzalloc(RI_SZ, GFP_KERNEL)))
goto free0;
- if (!(p->RIOHosts = ckmalloc(RIO_HOSTS * HOST_SZ)))
+ if (!(p->RIOHosts = kzalloc(RIO_HOSTS * HOST_SZ, GFP_KERNEL)))
goto free1;
- if (!(p->RIOPortp = ckmalloc(RIO_PORTS * PORT_SZ)))
+ if (!(p->RIOPortp = kzalloc(RIO_PORTS * PORT_SZ, GFP_KERNEL)))
goto free2;
p->RIOConf = RIOConf;
rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
#if 1
for (i = 0; i < RIO_PORTS; i++) {
- port = p->RIOPortp[i] = ckmalloc(sizeof(struct Port));
+ port = p->RIOPortp[i] = kzalloc(sizeof(struct Port), GFP_KERNEL);
if (!port) {
goto free6;
}
rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
+ tty_port_init(&port->gs.port);
+ port->gs.port.ops = &rio_port_ops;
port->PortNum = i;
port->gs.magic = RIO_MAGIC;
port->gs.close_delay = HZ / 2;
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &rio_real_driver;
spin_lock_init(&port->portSem);
- /*
- * Initializing wait queue
- */
- init_waitqueue_head(&port->gs.port.open_wait);
- init_waitqueue_head(&port->gs.port.close_wait);
}
#else
/* We could postpone initializing them to when they are configured. */
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 2c6c8f33d6b..9af8d74875b 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -857,98 +857,21 @@ static void rc_shutdown_port(struct tty_struct *tty,
rc_shutdown_board(bp);
}
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct riscom_port *port)
+static int carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- struct riscom_board *bp = port_Board(port);
- int retval;
- int do_clocal = 0;
- int CD;
+ struct riscom_port *p = container_of(port, struct riscom_port, port);
+ struct riscom_board *bp = port_Board(p);
unsigned long flags;
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (C_CLOCAL(tty))
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, info->count is dropped by one, so that
- * rs_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
+ int CD;
+
spin_lock_irqsave(&riscom_lock, flags);
-
- if (!tty_hung_up_p(filp))
- port->port.count--;
-
+ rc_out(bp, CD180_CAR, port_No(p));
+ CD = rc_in(bp, CD180_MSVR) & MSVR_CD;
+ rc_out(bp, CD180_MSVR, MSVR_RTS);
+ bp->DTR &= ~(1u << port_No(p));
+ rc_out(bp, RC_DTR, bp->DTR);
spin_unlock_irqrestore(&riscom_lock, flags);
-
- port->port.blocked_open++;
- while (1) {
- spin_lock_irqsave(&riscom_lock, flags);
-
- rc_out(bp, CD180_CAR, port_No(port));
- CD = rc_in(bp, CD180_MSVR) & MSVR_CD;
- rc_out(bp, CD180_MSVR, MSVR_RTS);
- bp->DTR &= ~(1u << port_No(port));
- rc_out(bp, RC_DTR, bp->DTR);
-
- spin_unlock_irqrestore(&riscom_lock, flags);
-
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal || CD))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- if (retval)
- return retval;
-
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ return CD;
}
static int rc_open(struct tty_struct *tty, struct file *filp)
@@ -977,13 +900,13 @@ static int rc_open(struct tty_struct *tty, struct file *filp)
error = rc_setup_port(bp, port);
if (error == 0)
- error = block_til_ready(tty, filp, port);
+ error = tty_port_block_til_ready(&port->port, tty, filp);
return error;
}
static void rc_flush_buffer(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_flush_buffer"))
@@ -998,7 +921,7 @@ static void rc_flush_buffer(struct tty_struct *tty)
static void rc_close(struct tty_struct *tty, struct file *filp)
{
- struct riscom_port *port = (struct riscom_port *) tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
unsigned long timeout;
@@ -1006,40 +929,19 @@ static void rc_close(struct tty_struct *tty, struct file *filp)
if (!port || rc_paranoia_check(port, tty->name, "close"))
return;
- spin_lock_irqsave(&riscom_lock, flags);
-
- if (tty_hung_up_p(filp))
- goto out;
-
bp = port_Board(port);
- if ((tty->count == 1) && (port->port.count != 1)) {
- printk(KERN_INFO "rc%d: rc_close: bad port count;"
- " tty->count is 1, port count is %d\n",
- board_No(bp), port->port.count);
- port->port.count = 1;
- }
- if (--port->port.count < 0) {
- printk(KERN_INFO "rc%d: rc_close: bad port count "
- "for tty%d: %d\n",
- board_No(bp), port_No(port), port->port.count);
- port->port.count = 0;
- }
- if (port->port.count)
- goto out;
- port->port.flags |= ASYNC_CLOSING;
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, port->port.closing_wait);
+
+ if (tty_port_close_start(&port->port, tty, filp) == 0)
+ return;
+
/*
* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
* interrupt driver to stop checking the data ready bit in the
* line status register.
*/
+
+ spin_lock_irqsave(&riscom_lock, flags);
port->IER &= ~IER_RXD;
if (port->port.flags & ASYNC_INITIALIZED) {
port->IER &= ~IER_TXRDY;
@@ -1053,33 +955,24 @@ static void rc_close(struct tty_struct *tty, struct file *filp)
*/
timeout = jiffies + HZ;
while (port->IER & IER_TXEMPTY) {
+ spin_unlock_irqrestore(&riscom_lock, flags);
msleep_interruptible(jiffies_to_msecs(port->timeout));
+ spin_lock_irqsave(&riscom_lock, flags);
if (time_after(jiffies, timeout))
break;
}
}
rc_shutdown_port(tty, bp, port);
rc_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- tty->closing = 0;
- port->port.tty = NULL;
- if (port->port.blocked_open) {
- if (port->port.close_delay)
- msleep_interruptible(jiffies_to_msecs(port->port.close_delay));
- wake_up_interruptible(&port->port.open_wait);
- }
- port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&port->port.close_wait);
-
-out:
spin_unlock_irqrestore(&riscom_lock, flags);
+
+ tty_port_close_end(&port->port, tty);
}
static int rc_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
int c, total = 0;
unsigned long flags;
@@ -1122,7 +1015,7 @@ static int rc_write(struct tty_struct *tty,
static int rc_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
int ret = 0;
@@ -1146,7 +1039,7 @@ out:
static void rc_flush_chars(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_flush_chars"))
@@ -1166,7 +1059,7 @@ static void rc_flush_chars(struct tty_struct *tty)
static int rc_write_room(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
int ret;
if (rc_paranoia_check(port, tty->name, "rc_write_room"))
@@ -1180,7 +1073,7 @@ static int rc_write_room(struct tty_struct *tty)
static int rc_chars_in_buffer(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
if (rc_paranoia_check(port, tty->name, "rc_chars_in_buffer"))
return 0;
@@ -1190,7 +1083,7 @@ static int rc_chars_in_buffer(struct tty_struct *tty)
static int rc_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned char status;
unsigned int result;
@@ -1220,7 +1113,7 @@ static int rc_tiocmget(struct tty_struct *tty, struct file *file)
static int rc_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
struct riscom_board *bp;
@@ -1252,7 +1145,7 @@ static int rc_tiocmset(struct tty_struct *tty, struct file *file,
static int rc_send_break(struct tty_struct *tty, int length)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp = port_Board(port);
unsigned long flags;
@@ -1345,7 +1238,7 @@ static int rc_get_serial_info(struct riscom_port *port,
static int rc_ioctl(struct tty_struct *tty, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
void __user *argp = (void __user *)arg;
int retval;
@@ -1371,7 +1264,7 @@ static int rc_ioctl(struct tty_struct *tty, struct file *filp,
static void rc_throttle(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1393,7 +1286,7 @@ static void rc_throttle(struct tty_struct *tty)
static void rc_unthrottle(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1415,7 +1308,7 @@ static void rc_unthrottle(struct tty_struct *tty)
static void rc_stop(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1433,7 +1326,7 @@ static void rc_stop(struct tty_struct *tty)
static void rc_start(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1454,8 +1347,9 @@ static void rc_start(struct tty_struct *tty)
static void rc_hangup(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
+ unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_hangup"))
return;
@@ -1463,16 +1357,18 @@ static void rc_hangup(struct tty_struct *tty)
bp = port_Board(port);
rc_shutdown_port(tty, bp, port);
+ spin_lock_irqsave(&port->port.lock, flags);
port->port.count = 0;
port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
port->port.tty = NULL;
wake_up_interruptible(&port->port.open_wait);
+ spin_unlock_irqrestore(&port->port.lock, flags);
}
static void rc_set_termios(struct tty_struct *tty,
struct ktermios *old_termios)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_set_termios"))
@@ -1510,6 +1406,11 @@ static const struct tty_operations riscom_ops = {
.break_ctl = rc_send_break,
};
+static const struct tty_port_operations riscom_port_ops = {
+ .carrier_raised = carrier_raised,
+};
+
+
static int __init rc_init_drivers(void)
{
int error;
@@ -1541,6 +1442,7 @@ static int __init rc_init_drivers(void)
memset(rc_port, 0, sizeof(rc_port));
for (i = 0; i < RC_NPORT * RC_NBOARD; i++) {
tty_port_init(&rc_port[i].port);
+ rc_port[i].port.ops = &riscom_port_ops;
rc_port[i].magic = RISCOM8_MAGIC;
}
return 0;
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 584d791e84a..f59fc5cea06 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -135,6 +135,7 @@ static int rcktpt_type[NUM_BOARDS];
static int is_PCI[NUM_BOARDS];
static rocketModel_t rocketModel[NUM_BOARDS];
static int max_board;
+static const struct tty_port_operations rocket_port_ops;
/*
* The following arrays define the interrupt bits corresponding to each AIOP.
@@ -435,15 +436,15 @@ static void rp_do_transmit(struct r_port *info)
#endif
if (!info)
return;
- if (!info->port.tty) {
- printk(KERN_WARNING "rp: WARNING %s called with "
- "info->port.tty==NULL\n", __func__);
+ tty = tty_port_tty_get(&info->port);
+
+ if (tty == NULL) {
+ printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__);
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
return;
}
spin_lock_irqsave(&info->slock, flags);
- tty = info->port.tty;
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
/* Loop sending data to FIFO until done or FIFO full */
@@ -477,6 +478,7 @@ static void rp_do_transmit(struct r_port *info)
}
spin_unlock_irqrestore(&info->slock, flags);
+ tty_kref_put(tty);
#ifdef ROCKET_DEBUG_INTR
printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
@@ -498,18 +500,18 @@ static void rp_handle_port(struct r_port *info)
if (!info)
return;
- if ((info->flags & ROCKET_INITIALIZED) == 0) {
+ if ((info->port.flags & ASYNC_INITIALIZED) == 0) {
printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
"info->flags & NOT_INIT\n");
return;
}
- if (!info->port.tty) {
+ tty = tty_port_tty_get(&info->port);
+ if (!tty) {
printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
- "info->port.tty==NULL\n");
+ "tty==NULL\n");
return;
}
cp = &info->channel;
- tty = info->port.tty;
IntMask = sGetChanIntID(cp) & info->intmask;
#ifdef ROCKET_DEBUG_INTR
@@ -541,6 +543,7 @@ static void rp_handle_port(struct r_port *info)
printk(KERN_INFO "DSR change...\n");
}
#endif
+ tty_kref_put(tty);
}
/*
@@ -649,9 +652,8 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
info->board = board;
info->aiop = aiop;
info->chan = chan;
- info->port.closing_wait = 3000;
- info->port.close_delay = 50;
- init_waitqueue_head(&info->port.open_wait);
+ tty_port_init(&info->port);
+ info->port.ops = &rocket_port_ops;
init_completion(&info->close_wait);
info->flags &= ~ROCKET_MODE_MASK;
switch (pc104[board][line]) {
@@ -710,7 +712,7 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
* Configures a rocketport port according to its termio settings. Called from
* user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
*/
-static void configure_r_port(struct r_port *info,
+static void configure_r_port(struct tty_struct *tty, struct r_port *info,
struct ktermios *old_termios)
{
unsigned cflag;
@@ -718,7 +720,7 @@ static void configure_r_port(struct r_port *info,
unsigned rocketMode;
int bits, baud, divisor;
CHANNEL_t *cp;
- struct ktermios *t = info->port.tty->termios;
+ struct ktermios *t = tty->termios;
cp = &info->channel;
cflag = t->c_cflag;
@@ -751,7 +753,7 @@ static void configure_r_port(struct r_port *info,
}
/* baud rate */
- baud = tty_get_baud_rate(info->port.tty);
+ baud = tty_get_baud_rate(tty);
if (!baud)
baud = 9600;
divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
@@ -769,7 +771,7 @@ static void configure_r_port(struct r_port *info,
sSetBaud(cp, divisor);
/* FIXME: Should really back compute a baud rate from the divisor */
- tty_encode_baud_rate(info->port.tty, baud, baud);
+ tty_encode_baud_rate(tty, baud, baud);
if (cflag & CRTSCTS) {
info->intmask |= DELTA_CTS;
@@ -794,15 +796,15 @@ static void configure_r_port(struct r_port *info,
* Handle software flow control in the board
*/
#ifdef ROCKET_SOFT_FLOW
- if (I_IXON(info->port.tty)) {
+ if (I_IXON(tty)) {
sEnTxSoftFlowCtl(cp);
- if (I_IXANY(info->port.tty)) {
+ if (I_IXANY(tty)) {
sEnIXANY(cp);
} else {
sDisIXANY(cp);
}
- sSetTxXONChar(cp, START_CHAR(info->port.tty));
- sSetTxXOFFChar(cp, STOP_CHAR(info->port.tty));
+ sSetTxXONChar(cp, START_CHAR(tty));
+ sSetTxXOFFChar(cp, STOP_CHAR(tty));
} else {
sDisTxSoftFlowCtl(cp);
sDisIXANY(cp);
@@ -814,24 +816,24 @@ static void configure_r_port(struct r_port *info,
* Set up ignore/read mask words
*/
info->read_status_mask = STMRCVROVRH | 0xFF;
- if (I_INPCK(info->port.tty))
+ if (I_INPCK(tty))
info->read_status_mask |= STMFRAMEH | STMPARITYH;
- if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
+ if (I_BRKINT(tty) || I_PARMRK(tty))
info->read_status_mask |= STMBREAKH;
/*
* Characters to ignore
*/
info->ignore_status_mask = 0;
- if (I_IGNPAR(info->port.tty))
+ if (I_IGNPAR(tty))
info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
- if (I_IGNBRK(info->port.tty)) {
+ if (I_IGNBRK(tty)) {
info->ignore_status_mask |= STMBREAKH;
/*
* If we're ignoring parity and break indicators,
* ignore overruns too. (For real raw support).
*/
- if (I_IGNPAR(info->port.tty))
+ if (I_IGNPAR(tty))
info->ignore_status_mask |= STMRCVROVRH;
}
@@ -864,106 +866,17 @@ static void configure_r_port(struct r_port *info,
}
}
-/* info->port.count is considered critical, protected by spinlocks. */
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct r_port *info)
+static int carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0, extra_count = 0;
- unsigned long flags;
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (tty_hung_up_p(filp))
- return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
- if (info->flags & ROCKET_CLOSING) {
- if (wait_for_completion_interruptible(&info->close_wait))
- return -ERESTARTSYS;
- return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
- info->flags |= ROCKET_NORMAL_ACTIVE;
- return 0;
- }
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become free. While we are in
- * this loop, info->port.count is dropped by one, so that rp_close() knows when to free things.
- * We restore it upon exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
-#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->port.count);
-#endif
- spin_lock_irqsave(&info->slock, flags);
-
-#ifdef ROCKET_DISABLE_SIMUSAGE
- info->flags |= ROCKET_NORMAL_ACTIVE;
-#else
- if (!tty_hung_up_p(filp)) {
- extra_count = 1;
- info->port.count--;
- }
-#endif
- info->port.blocked_open++;
-
- spin_unlock_irqrestore(&info->slock, flags);
-
- while (1) {
- if (tty->termios->c_cflag & CBAUD) {
- sSetDTR(&info->channel);
- sSetRTS(&info->channel);
- }
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
- if (info->flags & ROCKET_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
- info->line, info->port.count, info->flags);
-#endif
- schedule(); /* Don't hold spinlock here, will hang PC */
- }
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
-
- spin_lock_irqsave(&info->slock, flags);
-
- if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
-
- spin_unlock_irqrestore(&info->slock, flags);
+ struct r_port *info = container_of(port, struct r_port, port);
+ return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0;
+}
-#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
- info->line, info->port.count);
-#endif
- if (retval)
- return retval;
- info->flags |= ROCKET_NORMAL_ACTIVE;
- return 0;
+static void raise_dtr_rts(struct tty_port *port)
+{
+ struct r_port *info = container_of(port, struct r_port, port);
+ sSetDTR(&info->channel);
+ sSetRTS(&info->channel);
}
/*
@@ -973,24 +886,26 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
static int rp_open(struct tty_struct *tty, struct file *filp)
{
struct r_port *info;
+ struct tty_port *port;
int line = 0, retval;
CHANNEL_t *cp;
unsigned long page;
line = tty->index;
- if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
+ if (line < 0 || line >= MAX_RP_PORTS || ((info = rp_table[line]) == NULL))
return -ENXIO;
-
+ port = &info->port;
+
page = __get_free_page(GFP_KERNEL);
if (!page)
return -ENOMEM;
- if (info->flags & ROCKET_CLOSING) {
+ if (port->flags & ASYNC_CLOSING) {
retval = wait_for_completion_interruptible(&info->close_wait);
free_page(page);
if (retval)
return retval;
- return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
+ return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
}
/*
@@ -1002,9 +917,9 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
info->xmit_buf = (unsigned char *) page;
tty->driver_data = info;
- info->port.tty = tty;
+ tty_port_tty_set(port, tty);
- if (info->port.count++ == 0) {
+ if (port->count++ == 0) {
atomic_inc(&rp_num_ports_open);
#ifdef ROCKET_DEBUG_OPEN
@@ -1019,7 +934,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
/*
* Info->count is now 1; so it's safe to sleep now.
*/
- if ((info->flags & ROCKET_INITIALIZED) == 0) {
+ if (!test_bit(ASYNC_INITIALIZED, &port->flags)) {
cp = &info->channel;
sSetRxTrigger(cp, TRIG_1);
if (sGetChanStatus(cp) & CD_ACT)
@@ -1043,21 +958,21 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
sEnRxFIFO(cp);
sEnTransmit(cp);
- info->flags |= ROCKET_INITIALIZED;
+ set_bit(ASYNC_INITIALIZED, &info->port.flags);
/*
* Set up the tty->alt_speed kludge
*/
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
- info->port.tty->alt_speed = 57600;
+ tty->alt_speed = 57600;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
- info->port.tty->alt_speed = 115200;
+ tty->alt_speed = 115200;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
- info->port.tty->alt_speed = 230400;
+ tty->alt_speed = 230400;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
- info->port.tty->alt_speed = 460800;
+ tty->alt_speed = 460800;
- configure_r_port(info, NULL);
+ configure_r_port(tty, info, NULL);
if (tty->termios->c_cflag & CBAUD) {
sSetDTR(cp);
sSetRTS(cp);
@@ -1066,7 +981,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
/* Starts (or resets) the maint polling loop */
mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
- retval = block_til_ready(tty, filp, info);
+ retval = tty_port_block_til_ready(port, tty, filp);
if (retval) {
#ifdef ROCKET_DEBUG_OPEN
printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
@@ -1081,8 +996,8 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
*/
static void rp_close(struct tty_struct *tty, struct file *filp)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
- unsigned long flags;
+ struct r_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
int timeout;
CHANNEL_t *cp;
@@ -1093,53 +1008,10 @@ static void rp_close(struct tty_struct *tty, struct file *filp)
printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
#endif
- if (tty_hung_up_p(filp))
- return;
- spin_lock_irqsave(&info->slock, flags);
-
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. Info->count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk(KERN_WARNING "rp_close: bad serial port count; "
- "tty->count is 1, info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
- if (--info->port.count < 0) {
- printk(KERN_WARNING "rp_close: bad serial port count for "
- "ttyR%d: %d\n", info->line, info->port.count);
- info->port.count = 0;
- }
- if (info->port.count) {
- spin_unlock_irqrestore(&info->slock, flags);
+ if (tty_port_close_start(port, tty, filp) == 0)
return;
- }
- info->flags |= ROCKET_CLOSING;
- spin_unlock_irqrestore(&info->slock, flags);
cp = &info->channel;
-
- /*
- * Notify the line discpline to only process XON/XOFF characters
- */
- tty->closing = 1;
-
- /*
- * If transmission was throttled by the application request,
- * just flush the xmit buffer.
- */
- if (tty->flow_stopped)
- rp_flush_buffer(tty);
-
- /*
- * Wait for the transmit buffer to clear
- */
- if (info->port.closing_wait != ROCKET_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->port.closing_wait);
/*
* Before we drop DTR, make sure the UART transmitter
* has completely drained; this is especially
@@ -1168,19 +1040,24 @@ static void rp_close(struct tty_struct *tty, struct file *filp)
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
+ /* We can't yet use tty_port_close_end as the buffer handling in this
+ driver is a bit different to the usual */
+
+ if (port->blocked_open) {
+ if (port->close_delay) {
+ msleep_interruptible(jiffies_to_msecs(port->close_delay));
}
- wake_up_interruptible(&info->port.open_wait);
+ wake_up_interruptible(&port->open_wait);
} else {
if (info->xmit_buf) {
free_page((unsigned long) info->xmit_buf);
info->xmit_buf = NULL;
}
}
- info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
+ info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE);
tty->closing = 0;
+ tty_port_tty_set(port, NULL);
+ wake_up_interruptible(&port->close_wait);
complete_all(&info->close_wait);
atomic_dec(&rp_num_ports_open);
@@ -1195,7 +1072,7 @@ static void rp_close(struct tty_struct *tty, struct file *filp)
static void rp_set_termios(struct tty_struct *tty,
struct ktermios *old_termios)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned cflag;
@@ -1213,7 +1090,7 @@ static void rp_set_termios(struct tty_struct *tty,
/* Or CMSPAR */
tty->termios->c_cflag &= ~CMSPAR;
- configure_r_port(info, old_termios);
+ configure_r_port(tty, info, old_termios);
cp = &info->channel;
@@ -1238,7 +1115,7 @@ static void rp_set_termios(struct tty_struct *tty,
static int rp_break(struct tty_struct *tty, int break_state)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
unsigned long flags;
if (rocket_paranoia_check(info, "rp_break"))
@@ -1284,7 +1161,7 @@ static int sGetChanRI(CHANNEL_T * ChP)
*/
static int rp_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct r_port *info = (struct r_port *)tty->driver_data;
+ struct r_port *info = tty->driver_data;
unsigned int control, result, ChanStatus;
ChanStatus = sGetChanStatusLo(&info->channel);
@@ -1305,7 +1182,7 @@ static int rp_tiocmget(struct tty_struct *tty, struct file *file)
static int rp_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct r_port *info = (struct r_port *)tty->driver_data;
+ struct r_port *info = tty->driver_data;
if (set & TIOCM_RTS)
info->channel.TxControl[3] |= SET_RTS;
@@ -1338,7 +1215,8 @@ static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
return 0;
}
-static int set_config(struct r_port *info, struct rocket_config __user *new_info)
+static int set_config(struct tty_struct *tty, struct r_port *info,
+ struct rocket_config __user *new_info)
{
struct rocket_config new_serial;
@@ -1350,7 +1228,7 @@ static int set_config(struct r_port *info, struct rocket_config __user *new_info
if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
return -EPERM;
info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
- configure_r_port(info, NULL);
+ configure_r_port(tty, info, NULL);
return 0;
}
@@ -1359,15 +1237,15 @@ static int set_config(struct r_port *info, struct rocket_config __user *new_info
info->port.closing_wait = new_serial.closing_wait;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
- info->port.tty->alt_speed = 57600;
+ tty->alt_speed = 57600;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
- info->port.tty->alt_speed = 115200;
+ tty->alt_speed = 115200;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
- info->port.tty->alt_speed = 230400;
+ tty->alt_speed = 230400;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
- info->port.tty->alt_speed = 460800;
+ tty->alt_speed = 460800;
- configure_r_port(info, NULL);
+ configure_r_port(tty, info, NULL);
return 0;
}
@@ -1434,7 +1312,7 @@ static int get_version(struct r_port *info, struct rocket_version __user *retver
static int rp_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
void __user *argp = (void __user *)arg;
int ret = 0;
@@ -1452,7 +1330,7 @@ static int rp_ioctl(struct tty_struct *tty, struct file *file,
ret = get_config(info, argp);
break;
case RCKP_SET_CONFIG:
- ret = set_config(info, argp);
+ ret = set_config(tty, info, argp);
break;
case RCKP_GET_PORTS:
ret = get_ports(info, argp);
@@ -1472,7 +1350,7 @@ static int rp_ioctl(struct tty_struct *tty, struct file *file,
static void rp_send_xchar(struct tty_struct *tty, char ch)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
if (rocket_paranoia_check(info, "rp_send_xchar"))
@@ -1487,7 +1365,7 @@ static void rp_send_xchar(struct tty_struct *tty, char ch)
static void rp_throttle(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
#ifdef ROCKET_DEBUG_THROTTLE
@@ -1507,7 +1385,7 @@ static void rp_throttle(struct tty_struct *tty)
static void rp_unthrottle(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
#ifdef ROCKET_DEBUG_THROTTLE
printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
@@ -1534,7 +1412,7 @@ static void rp_unthrottle(struct tty_struct *tty)
*/
static void rp_stop(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
#ifdef ROCKET_DEBUG_FLOW
printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
@@ -1550,7 +1428,7 @@ static void rp_stop(struct tty_struct *tty)
static void rp_start(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
#ifdef ROCKET_DEBUG_FLOW
printk(KERN_INFO "start %s: %d %d....\n", tty->name,
@@ -1570,7 +1448,7 @@ static void rp_start(struct tty_struct *tty)
*/
static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned long orig_jiffies;
int check_time, exit_time;
@@ -1627,7 +1505,7 @@ static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
static void rp_hangup(struct tty_struct *tty)
{
CHANNEL_t *cp;
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
if (rocket_paranoia_check(info, "rp_hangup"))
return;
@@ -1636,15 +1514,13 @@ static void rp_hangup(struct tty_struct *tty)
printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
#endif
rp_flush_buffer(tty);
- if (info->flags & ROCKET_CLOSING)
+ if (info->port.flags & ASYNC_CLOSING)
return;
if (info->port.count)
atomic_dec(&rp_num_ports_open);
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
- info->port.count = 0;
- info->flags &= ~ROCKET_NORMAL_ACTIVE;
- info->port.tty = NULL;
+ tty_port_hangup(&info->port);
cp = &info->channel;
sDisRxFIFO(cp);
@@ -1653,7 +1529,7 @@ static void rp_hangup(struct tty_struct *tty)
sDisCTSFlowCtl(cp);
sDisTxSoftFlowCtl(cp);
sClrTxXOFF(cp);
- info->flags &= ~ROCKET_INITIALIZED;
+ info->port.flags &= ~ASYNC_INITIALIZED;
wake_up_interruptible(&info->port.open_wait);
}
@@ -1667,7 +1543,7 @@ static void rp_hangup(struct tty_struct *tty)
*/
static int rp_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned long flags;
@@ -1714,7 +1590,7 @@ static int rp_put_char(struct tty_struct *tty, unsigned char ch)
static int rp_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
const unsigned char *b;
int c, retval = 0;
@@ -1764,7 +1640,8 @@ static int rp_write(struct tty_struct *tty,
/* Write remaining data into the port's xmit_buf */
while (1) {
- if (!info->port.tty) /* Seemingly obligatory check... */
+ /* Hung up ? */
+ if (!test_bit(ASYNC_NORMAL_ACTIVE, &info->port.flags))
goto end;
c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
c = min(c, XMIT_BUF_SIZE - info->xmit_head);
@@ -1806,7 +1683,7 @@ end:
*/
static int rp_write_room(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
int ret;
if (rocket_paranoia_check(info, "rp_write_room"))
@@ -1827,7 +1704,7 @@ static int rp_write_room(struct tty_struct *tty)
*/
static int rp_chars_in_buffer(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
@@ -1848,7 +1725,7 @@ static int rp_chars_in_buffer(struct tty_struct *tty)
*/
static void rp_flush_buffer(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned long flags;
@@ -2371,6 +2248,11 @@ static const struct tty_operations rocket_ops = {
.tiocmset = rp_tiocmset,
};
+static const struct tty_port_operations rocket_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
/*
* The module "startup" routine; it's run when the module is loaded.
*/
diff --git a/drivers/char/rocket.h b/drivers/char/rocket.h
index a8b09195ebb..ec863f35f1a 100644
--- a/drivers/char/rocket.h
+++ b/drivers/char/rocket.h
@@ -39,7 +39,7 @@ struct rocket_version {
/*
* Rocketport flags
*/
-#define ROCKET_CALLOUT_NOHUP 0x00000001
+/*#define ROCKET_CALLOUT_NOHUP 0x00000001 */
#define ROCKET_FORCE_CD 0x00000002
#define ROCKET_HUP_NOTIFY 0x00000004
#define ROCKET_SPLIT_TERMIOS 0x00000008
diff --git a/drivers/char/rocket_int.h b/drivers/char/rocket_int.h
index 21f3ff53ba3..67e0f1e778a 100644
--- a/drivers/char/rocket_int.h
+++ b/drivers/char/rocket_int.h
@@ -1162,11 +1162,6 @@ struct r_port {
/* number of characters left in xmit buffer before we ask for more */
#define WAKEUP_CHARS 256
-/* Internal flags used only by the rocketport driver */
-#define ROCKET_INITIALIZED 0x80000000 /* Port is active */
-#define ROCKET_CLOSING 0x40000000 /* Serial port is closing */
-#define ROCKET_NORMAL_ACTIVE 0x20000000 /* Normal port is active */
-
/*
* Assigned major numbers for the Comtrol Rocketport
*/
diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 20d6efb6324..e0d0f8b2696 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -48,9 +48,10 @@
* CONFIG_HPET_EMULATE_RTC
* 1.12a Maciej W. Rozycki: Handle memory-mapped chips properly.
* 1.12ac Alan Cox: Allow read access to the day of week register
+ * 1.12b David John: Remove calls to the BKL.
*/
-#define RTC_VERSION "1.12ac"
+#define RTC_VERSION "1.12b"
/*
* Note that *all* calls to CMOS_READ and CMOS_WRITE are done with
@@ -73,7 +74,6 @@
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/sysctl.h>
#include <linux/wait.h>
#include <linux/bcd.h>
@@ -182,8 +182,8 @@ static int rtc_proc_open(struct inode *inode, struct file *file);
/*
* rtc_status is never changed by rtc_interrupt, and ioctl/open/close is
- * protected by the big kernel lock. However, ioctl can still disable the timer
- * in rtc_status and then with del_timer after the interrupt has read
+ * protected by the spin lock rtc_lock. However, ioctl can still disable the
+ * timer in rtc_status and then with del_timer after the interrupt has read
* rtc_status but before mod_timer is called, which would then reenable the
* timer (but you would need to have an awful timing before you'd trip on it)
*/
@@ -720,9 +720,7 @@ static int rtc_do_ioctl(unsigned int cmd, unsigned long arg, int kernel)
static long rtc_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
long ret;
- lock_kernel();
ret = rtc_do_ioctl(cmd, arg, 0);
- unlock_kernel();
return ret;
}
@@ -731,12 +729,8 @@ static long rtc_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
* Also clear the previous interrupt data on an open, and clean
* up things on a close.
*/
-
-/* We use rtc_lock to protect against concurrent opens. So the BKL is not
- * needed here. Or anywhere else in this driver. */
static int rtc_open(struct inode *inode, struct file *file)
{
- lock_kernel();
spin_lock_irq(&rtc_lock);
if (rtc_status & RTC_IS_OPEN)
@@ -746,12 +740,10 @@ static int rtc_open(struct inode *inode, struct file *file)
rtc_irq_data = 0;
spin_unlock_irq(&rtc_lock);
- unlock_kernel();
return 0;
out_busy:
spin_unlock_irq(&rtc_lock);
- unlock_kernel();
return -EBUSY;
}
@@ -800,7 +792,6 @@ no_irq:
}
#ifdef RTC_IRQ
-/* Called without the kernel lock - fine */
static unsigned int rtc_poll(struct file *file, poll_table *wait)
{
unsigned long l;
diff --git a/drivers/char/selection.c b/drivers/char/selection.c
index 2978a49a172..f29fbe9b8ed 100644
--- a/drivers/char/selection.c
+++ b/drivers/char/selection.c
@@ -306,7 +306,7 @@ int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *t
*/
int paste_selection(struct tty_struct *tty)
{
- struct vc_data *vc = (struct vc_data *)tty->driver_data;
+ struct vc_data *vc = tty->driver_data;
int pasted = 0;
unsigned int count;
struct tty_ldisc *ld;
diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
index 7b0c35207d9..33872a219df 100644
--- a/drivers/char/ser_a2232.c
+++ b/drivers/char/ser_a2232.c
@@ -122,7 +122,7 @@ static void a2232_disable_tx_interrupts(void *ptr);
static void a2232_enable_tx_interrupts(void *ptr);
static void a2232_disable_rx_interrupts(void *ptr);
static void a2232_enable_rx_interrupts(void *ptr);
-static int a2232_get_CD(void *ptr);
+static int a2232_carrier_raised(struct tty_port *port);
static void a2232_shutdown_port(void *ptr);
static int a2232_set_real_termios(void *ptr);
static int a2232_chars_in_buffer(void *ptr);
@@ -148,7 +148,6 @@ static struct real_driver a2232_real_driver = {
a2232_enable_tx_interrupts,
a2232_disable_rx_interrupts,
a2232_enable_rx_interrupts,
- a2232_get_CD,
a2232_shutdown_port,
a2232_set_real_termios,
a2232_chars_in_buffer,
@@ -260,9 +259,10 @@ static void a2232_enable_rx_interrupts(void *ptr)
port->disable_rx = 0;
}
-static int a2232_get_CD(void *ptr)
+static int a2232_carrier_raised(struct tty_port *port)
{
- return ((struct a2232_port *) ptr)->cd_status;
+ struct a2232_port *ap = container_of(port, struct a2232_port, gs.port);
+ return ap->cd_status;
}
static void a2232_shutdown_port(void *ptr)
@@ -460,14 +460,14 @@ static void a2232_throttle(struct tty_struct *tty)
if switched on. So the only thing we can do at this
layer here is not taking any characters out of the
A2232 buffer any more. */
- struct a2232_port *port = (struct a2232_port *) tty->driver_data;
+ struct a2232_port *port = tty->driver_data;
port->throttle_input = -1;
}
static void a2232_unthrottle(struct tty_struct *tty)
{
/* Unthrottle: dual to "throttle()" above. */
- struct a2232_port *port = (struct a2232_port *) tty->driver_data;
+ struct a2232_port *port = tty->driver_data;
port->throttle_input = 0;
}
@@ -638,6 +638,10 @@ int ch, err, n, p;
return IRQ_HANDLED;
}
+static const struct tty_port_operations a2232_port_ops = {
+ .carrier_raised = a2232_carrier_raised,
+};
+
static void a2232_init_portstructs(void)
{
struct a2232_port *port;
@@ -645,6 +649,8 @@ static void a2232_init_portstructs(void)
for (i = 0; i < MAX_A2232_BOARDS*NUMLINES; i++) {
port = a2232_ports + i;
+ tty_port_init(&port->gs.port);
+ port->gs.port.ops = &a2232_port_ops;
port->which_a2232 = i/NUMLINES;
port->which_port_on_a2232 = i%NUMLINES;
port->disable_rx = port->throttle_input = port->cd_status = 0;
@@ -652,11 +658,6 @@ static void a2232_init_portstructs(void)
port->gs.close_delay = HZ/2;
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &a2232_real_driver;
-#ifdef NEW_WRITE_LOCKING
- mutex_init(&(port->gs.port_write_mutex));
-#endif
- init_waitqueue_head(&port->gs.port.open_wait);
- init_waitqueue_head(&port->gs.port.close_wait);
}
}
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index a8f15e6be59..f1f24f0ee26 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -315,7 +315,7 @@ u_short write_cy_cmd(volatile u_char * base_addr, u_char cmd)
static void cy_stop(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
int channel;
unsigned long flags;
@@ -337,7 +337,7 @@ static void cy_stop(struct tty_struct *tty)
static void cy_start(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
int channel;
unsigned long flags;
@@ -1062,7 +1062,7 @@ static void config_setup(struct cyclades_port *info)
static int cy_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_IO
@@ -1090,7 +1090,7 @@ static int cy_put_char(struct tty_struct *tty, unsigned char ch)
static void cy_flush_chars(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
int channel;
@@ -1122,7 +1122,7 @@ static void cy_flush_chars(struct tty_struct *tty)
*/
static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
int c, total = 0;
@@ -1166,7 +1166,7 @@ static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
static int cy_write_room(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int ret;
#ifdef SERIAL_DEBUG_IO
@@ -1183,7 +1183,7 @@ static int cy_write_room(struct tty_struct *tty)
static int cy_chars_in_buffer(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
#ifdef SERIAL_DEBUG_IO
printk("cy_chars_in_buffer %s %d\n", tty->name, info->xmit_cnt); /* */
@@ -1197,7 +1197,7 @@ static int cy_chars_in_buffer(struct tty_struct *tty)
static void cy_flush_buffer(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_IO
@@ -1218,7 +1218,7 @@ static void cy_flush_buffer(struct tty_struct *tty)
*/
static void cy_throttle(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
int channel;
@@ -1250,7 +1250,7 @@ static void cy_throttle(struct tty_struct *tty)
static void cy_unthrottle(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
int channel;
@@ -1345,7 +1345,7 @@ check_and_exit:
static int cy_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int channel;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
unsigned long flags;
@@ -1369,7 +1369,7 @@ static int
cy_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int channel;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
unsigned long flags;
@@ -1532,7 +1532,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
unsigned long val;
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int ret_val = 0;
void __user *argp = (void __user *)arg;
@@ -1607,7 +1607,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
#ifdef SERIAL_DEBUG_OTHER
printk("cy_set_termios %s\n", tty->name);
@@ -1631,7 +1631,7 @@ static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
static void cy_close(struct tty_struct *tty, struct file *filp)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
/* CP('C'); */
#ifdef SERIAL_DEBUG_OTHER
@@ -1698,7 +1698,7 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
*/
void cy_hangup(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
#ifdef SERIAL_DEBUG_OTHER
printk("cy_hangup %s\n", tty->name); /* */
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index a16b94f12eb..3c67c3d83de 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -1450,7 +1450,7 @@ static int sx_open(struct tty_struct *tty, struct file *filp)
static void sx_flush_buffer(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
@@ -1472,7 +1472,7 @@ static void sx_flush_buffer(struct tty_struct *tty)
static void sx_close(struct tty_struct *tty, struct file *filp)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
unsigned long timeout;
@@ -1585,7 +1585,7 @@ static void sx_close(struct tty_struct *tty, struct file *filp)
static int sx_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
int c, total = 0;
unsigned long flags;
@@ -1637,7 +1637,7 @@ static int sx_write(struct tty_struct *tty,
static int sx_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
@@ -1676,7 +1676,7 @@ static int sx_put_char(struct tty_struct *tty, unsigned char ch)
static void sx_flush_chars(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp = port_Board(port);
@@ -1703,7 +1703,7 @@ static void sx_flush_chars(struct tty_struct *tty)
static int sx_write_room(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
int ret;
func_enter();
@@ -1724,7 +1724,7 @@ static int sx_write_room(struct tty_struct *tty)
static int sx_chars_in_buffer(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
func_enter();
@@ -1738,7 +1738,7 @@ static int sx_chars_in_buffer(struct tty_struct *tty)
static int sx_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned char status;
unsigned int result;
@@ -1780,7 +1780,7 @@ static int sx_tiocmget(struct tty_struct *tty, struct file *file)
static int sx_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
@@ -1820,7 +1820,7 @@ static int sx_tiocmset(struct tty_struct *tty, struct file *file,
static int sx_send_break(struct tty_struct *tty, int length)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp = port_Board(port);
unsigned long flags;
@@ -1931,7 +1931,7 @@ static int sx_get_serial_info(struct specialix_port *port,
static int sx_ioctl(struct tty_struct *tty, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
void __user *argp = (void __user *)arg;
func_enter();
@@ -1959,7 +1959,7 @@ static int sx_ioctl(struct tty_struct *tty, struct file *filp,
static void sx_throttle(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2004,7 +2004,7 @@ static void sx_throttle(struct tty_struct *tty)
static void sx_unthrottle(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2045,7 +2045,7 @@ static void sx_unthrottle(struct tty_struct *tty)
static void sx_stop(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2072,7 +2072,7 @@ static void sx_stop(struct tty_struct *tty)
static void sx_start(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2100,7 +2100,7 @@ static void sx_start(struct tty_struct *tty)
static void sx_hangup(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2135,7 +2135,7 @@ static void sx_hangup(struct tty_struct *tty)
static void sx_set_termios(struct tty_struct *tty,
struct ktermios *old_termios)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 963b03fb29e..e1e0dd89ac9 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -130,6 +130,8 @@ static char stl_unwanted[SC26198_RXFIFOSIZE];
static DEFINE_MUTEX(stl_brdslock);
static struct stlbrd *stl_brds[STL_MAXBRDS];
+static const struct tty_port_operations stl_port_ops;
+
/*
* Per board state flags. Used with the state field of the board struct.
* Not really much here!
@@ -407,7 +409,6 @@ static int stl_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, uns
static int stl_brdinit(struct stlbrd *brdp);
static int stl_getportstats(struct tty_struct *tty, struct stlport *portp, comstats_t __user *cp);
static int stl_clrportstats(struct stlport *portp, comstats_t __user *cp);
-static int stl_waitcarrier(struct tty_struct *tty, struct stlport *portp, struct file *filp);
/*
* CD1400 uart specific handling functions.
@@ -703,8 +704,9 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
{
struct stlport *portp;
struct stlbrd *brdp;
+ struct tty_port *port;
unsigned int minordev, brdnr, panelnr;
- int portnr, rc;
+ int portnr;
pr_debug("stl_open(tty=%p,filp=%p): device=%s\n", tty, filp, tty->name);
@@ -715,6 +717,7 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
brdp = stl_brds[brdnr];
if (brdp == NULL)
return -ENODEV;
+
minordev = MINOR2PORT(minordev);
for (portnr = -1, panelnr = 0; panelnr < STL_MAXPANELS; panelnr++) {
if (brdp->panels[panelnr] == NULL)
@@ -731,16 +734,17 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
portp = brdp->panels[panelnr]->ports[portnr];
if (portp == NULL)
return -ENODEV;
+ port = &portp->port;
/*
* On the first open of the device setup the port hardware, and
* initialize the per port data structure.
*/
- tty_port_tty_set(&portp->port, tty);
+ tty_port_tty_set(port, tty);
tty->driver_data = portp;
- portp->port.count++;
+ port->count++;
- if ((portp->port.flags & ASYNC_INITIALIZED) == 0) {
+ if ((port->flags & ASYNC_INITIALIZED) == 0) {
if (!portp->tx.buf) {
portp->tx.buf = kmalloc(STL_TXBUFSIZE, GFP_KERNEL);
if (!portp->tx.buf)
@@ -754,91 +758,24 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
stl_enablerxtx(portp, 1, 1);
stl_startrxtx(portp, 1, 0);
clear_bit(TTY_IO_ERROR, &tty->flags);
- portp->port.flags |= ASYNC_INITIALIZED;
- }
-
-/*
- * Check if this port is in the middle of closing. If so then wait
- * until it is closed then return error status, based on flag settings.
- * The sleep here does not need interrupt protection since the wakeup
- * for it is done with the same context.
- */
- if (portp->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&portp->port.close_wait);
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- return -ERESTARTSYS;
+ port->flags |= ASYNC_INITIALIZED;
}
-
-/*
- * Based on type of open being done check if it can overlap with any
- * previous opens still in effect. If we are a normal serial device
- * then also we might have to wait for carrier.
- */
- if (!(filp->f_flags & O_NONBLOCK))
- if ((rc = stl_waitcarrier(tty, portp, filp)) != 0)
- return rc;
-
- portp->port.flags |= ASYNC_NORMAL_ACTIVE;
-
- return 0;
+ return tty_port_block_til_ready(port, tty, filp);
}
/*****************************************************************************/
-/*
- * Possibly need to wait for carrier (DCD signal) to come high. Say
- * maybe because if we are clocal then we don't need to wait...
- */
-
-static int stl_waitcarrier(struct tty_struct *tty, struct stlport *portp,
- struct file *filp)
+static int stl_carrier_raised(struct tty_port *port)
{
- unsigned long flags;
- int rc, doclocal;
-
- pr_debug("stl_waitcarrier(portp=%p,filp=%p)\n", portp, filp);
-
- rc = 0;
- doclocal = 0;
-
- spin_lock_irqsave(&stallion_lock, flags);
-
- if (tty->termios->c_cflag & CLOCAL)
- doclocal++;
-
- portp->openwaitcnt++;
- if (! tty_hung_up_p(filp))
- portp->port.count--;
-
- for (;;) {
- /* Takes brd_lock internally */
- stl_setsignals(portp, 1, 1);
- if (tty_hung_up_p(filp) ||
- ((portp->port.flags & ASYNC_INITIALIZED) == 0)) {
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- rc = -EBUSY;
- else
- rc = -ERESTARTSYS;
- break;
- }
- if (((portp->port.flags & ASYNC_CLOSING) == 0) &&
- (doclocal || (portp->sigs & TIOCM_CD)))
- break;
- if (signal_pending(current)) {
- rc = -ERESTARTSYS;
- break;
- }
- /* FIXME */
- interruptible_sleep_on(&portp->port.open_wait);
- }
-
- if (! tty_hung_up_p(filp))
- portp->port.count++;
- portp->openwaitcnt--;
- spin_unlock_irqrestore(&stallion_lock, flags);
+ struct stlport *portp = container_of(port, struct stlport, port);
+ return (portp->sigs & TIOCM_CD) ? 1 : 0;
+}
- return rc;
+static void stl_raise_dtr_rts(struct tty_port *port)
+{
+ struct stlport *portp = container_of(port, struct stlport, port);
+ /* Takes brd_lock internally */
+ stl_setsignals(portp, 1, 1);
}
/*****************************************************************************/
@@ -890,47 +827,29 @@ static void stl_waituntilsent(struct tty_struct *tty, int timeout)
static void stl_close(struct tty_struct *tty, struct file *filp)
{
struct stlport *portp;
+ struct tty_port *port;
unsigned long flags;
pr_debug("stl_close(tty=%p,filp=%p)\n", tty, filp);
portp = tty->driver_data;
- if (portp == NULL)
- return;
+ BUG_ON(portp == NULL);
- spin_lock_irqsave(&stallion_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&stallion_lock, flags);
- return;
- }
- if ((tty->count == 1) && (portp->port.count != 1))
- portp->port.count = 1;
- if (portp->port.count-- > 1) {
- spin_unlock_irqrestore(&stallion_lock, flags);
- return;
- }
-
- portp->port.count = 0;
- portp->port.flags |= ASYNC_CLOSING;
+ port = &portp->port;
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
/*
* May want to wait for any data to drain before closing. The BUSY
* flag keeps track of whether we are still sending or not - it is
* very accurate for the cd1400, not quite so for the sc26198.
* (The sc26198 has no "end-of-data" interrupt only empty FIFO)
*/
- tty->closing = 1;
-
- spin_unlock_irqrestore(&stallion_lock, flags);
-
- if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, portp->closing_wait);
stl_waituntilsent(tty, (HZ / 2));
-
- spin_lock_irqsave(&stallion_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
portp->port.flags &= ~ASYNC_INITIALIZED;
- spin_unlock_irqrestore(&stallion_lock, flags);
+ spin_unlock_irqrestore(&port->lock, flags);
stl_disableintrs(portp);
if (tty->termios->c_cflag & HUPCL)
@@ -944,20 +863,9 @@ static void stl_close(struct tty_struct *tty, struct file *filp)
portp->tx.head = NULL;
portp->tx.tail = NULL;
}
- set_bit(TTY_IO_ERROR, &tty->flags);
- tty_ldisc_flush(tty);
- tty->closing = 0;
- tty_port_tty_set(&portp->port, NULL);
-
- if (portp->openwaitcnt) {
- if (portp->close_delay)
- msleep_interruptible(jiffies_to_msecs(portp->close_delay));
- wake_up_interruptible(&portp->port.open_wait);
- }
-
- portp->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&portp->port.close_wait);
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
}
/*****************************************************************************/
@@ -1405,14 +1313,20 @@ static void stl_stop(struct tty_struct *tty)
static void stl_hangup(struct tty_struct *tty)
{
struct stlport *portp;
+ struct tty_port *port;
+ unsigned long flags;
pr_debug("stl_hangup(tty=%p)\n", tty);
portp = tty->driver_data;
if (portp == NULL)
return;
+ port = &portp->port;
+
+ spin_lock_irqsave(&port->lock, flags);
+ port->flags &= ~ASYNC_INITIALIZED;
+ spin_unlock_irqrestore(&port->lock, flags);
- portp->port.flags &= ~ASYNC_INITIALIZED;
stl_disableintrs(portp);
if (tty->termios->c_cflag & HUPCL)
stl_setsignals(portp, 0, 0);
@@ -1426,10 +1340,7 @@ static void stl_hangup(struct tty_struct *tty)
portp->tx.head = NULL;
portp->tx.tail = NULL;
}
- tty_port_tty_set(&portp->port, NULL);
- portp->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- portp->port.count = 0;
- wake_up_interruptible(&portp->port.open_wait);
+ tty_port_hangup(port);
}
/*****************************************************************************/
@@ -1776,6 +1687,7 @@ static int __devinit stl_initports(struct stlbrd *brdp, struct stlpanel *panelp)
break;
}
tty_port_init(&portp->port);
+ portp->port.ops = &stl_port_ops;
portp->magic = STL_PORTMAGIC;
portp->portnr = i;
portp->brdnr = panelp->brdnr;
@@ -2659,6 +2571,11 @@ static const struct tty_operations stl_ops = {
.tiocmset = stl_tiocmset,
};
+static const struct tty_port_operations stl_port_ops = {
+ .carrier_raised = stl_carrier_raised,
+ .raise_dtr_rts = stl_raise_dtr_rts,
+};
+
/*****************************************************************************/
/* CD1400 HARDWARE FUNCTIONS */
/*****************************************************************************/
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index ba4e86281fb..b60be7b0dec 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -279,7 +279,7 @@ static void sx_disable_tx_interrupts(void *ptr);
static void sx_enable_tx_interrupts(void *ptr);
static void sx_disable_rx_interrupts(void *ptr);
static void sx_enable_rx_interrupts(void *ptr);
-static int sx_get_CD(void *ptr);
+static int sx_carrier_raised(struct tty_port *port);
static void sx_shutdown_port(void *ptr);
static int sx_set_real_termios(void *ptr);
static void sx_close(void *ptr);
@@ -360,7 +360,6 @@ static struct real_driver sx_real_driver = {
sx_enable_tx_interrupts,
sx_disable_rx_interrupts,
sx_enable_rx_interrupts,
- sx_get_CD,
sx_shutdown_port,
sx_set_real_termios,
sx_chars_in_buffer,
@@ -791,7 +790,7 @@ static int sx_getsignals(struct sx_port *port)
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) "
"%02x/%02x\n",
(o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0,
- port->c_dcd, sx_get_CD(port),
+ port->c_dcd, tty_port_carrier_raised(&port->gs.port),
sx_read_channel_byte(port, hi_ip),
sx_read_channel_byte(port, hi_state));
@@ -1190,7 +1189,7 @@ static inline void sx_check_modem_signals(struct sx_port *port)
hi_state = sx_read_channel_byte(port, hi_state);
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n",
- port->c_dcd, sx_get_CD(port));
+ port->c_dcd, tty_port_carrier_raised(&port->gs.port));
if (hi_state & ST_BREAK) {
hi_state &= ~ST_BREAK;
@@ -1202,11 +1201,11 @@ static inline void sx_check_modem_signals(struct sx_port *port)
hi_state &= ~ST_DCD;
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n");
sx_write_channel_byte(port, hi_state, hi_state);
- c_dcd = sx_get_CD(port);
+ c_dcd = tty_port_carrier_raised(&port->gs.port);
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd);
if (c_dcd != port->c_dcd) {
port->c_dcd = c_dcd;
- if (sx_get_CD(port)) {
+ if (tty_port_carrier_raised(&port->gs.port)) {
/* DCD went UP */
if ((sx_read_channel_byte(port, hi_hstat) !=
HS_IDLE_CLOSED) &&
@@ -1415,13 +1414,10 @@ static void sx_enable_rx_interrupts(void *ptr)
}
/* Jeez. Isn't this simple? */
-static int sx_get_CD(void *ptr)
+static int sx_carrier_raised(struct tty_port *port)
{
- struct sx_port *port = ptr;
- func_enter2();
-
- func_exit();
- return ((sx_read_channel_byte(port, hi_ip) & IP_DCD) != 0);
+ struct sx_port *sp = container_of(port, struct sx_port, gs.port);
+ return ((sx_read_channel_byte(sp, hi_ip) & IP_DCD) != 0);
}
/* Jeez. Isn't this simple? */
@@ -1536,7 +1532,7 @@ static int sx_open(struct tty_struct *tty, struct file *filp)
}
/* tty->low_latency = 1; */
- port->c_dcd = sx_get_CD(port);
+ port->c_dcd = sx_carrier_raised(&port->gs.port);
sx_dprintk(SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd);
func_exit();
@@ -1945,7 +1941,7 @@ static int sx_ioctl(struct tty_struct *tty, struct file *filp,
static void sx_throttle(struct tty_struct *tty)
{
- struct sx_port *port = (struct sx_port *)tty->driver_data;
+ struct sx_port *port = tty->driver_data;
func_enter2();
/* If the port is using any type of input flow
@@ -1959,7 +1955,7 @@ static void sx_throttle(struct tty_struct *tty)
static void sx_unthrottle(struct tty_struct *tty)
{
- struct sx_port *port = (struct sx_port *)tty->driver_data;
+ struct sx_port *port = tty->driver_data;
func_enter2();
/* Always unthrottle even if flow control is not enabled on
@@ -2354,6 +2350,10 @@ static const struct tty_operations sx_ops = {
.tiocmset = sx_tiocmset,
};
+static const struct tty_port_operations sx_port_ops = {
+ .carrier_raised = sx_carrier_raised,
+};
+
static int sx_init_drivers(void)
{
int error;
@@ -2410,6 +2410,7 @@ static int sx_init_portstructs(int nboards, int nports)
for (j = 0; j < boards[i].nports; j++) {
sx_dprintk(SX_DEBUG_INIT, "initing port %d\n", j);
tty_port_init(&port->gs.port);
+ port->gs.port.ops = &sx_port_ops;
port->gs.magic = SX_MAGIC;
port->gs.close_delay = HZ / 2;
port->gs.closing_wait = 30 * HZ;
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 500f5176b6b..b8063d4cad3 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -977,7 +977,7 @@ static void ldisc_receive_buf(struct tty_struct *tty,
*/
static void mgsl_stop(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (mgsl_paranoia_check(info, tty->name, "mgsl_stop"))
@@ -1000,7 +1000,7 @@ static void mgsl_stop(struct tty_struct *tty)
*/
static void mgsl_start(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (mgsl_paranoia_check(info, tty->name, "mgsl_start"))
@@ -2057,7 +2057,7 @@ static int mgsl_put_char(struct tty_struct *tty, unsigned char ch)
*/
static void mgsl_flush_chars(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if ( debug_level >= DEBUG_LEVEL_INFO )
@@ -2109,7 +2109,7 @@ static int mgsl_write(struct tty_struct * tty,
const unsigned char *buf, int count)
{
int c, ret = 0;
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if ( debug_level >= DEBUG_LEVEL_INFO )
@@ -2232,7 +2232,7 @@ cleanup:
*/
static int mgsl_write_room(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
int ret;
if (mgsl_paranoia_check(info, tty->name, "mgsl_write_room"))
@@ -2267,7 +2267,7 @@ static int mgsl_write_room(struct tty_struct *tty)
*/
static int mgsl_chars_in_buffer(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_chars_in_buffer(%s)\n",
@@ -2301,7 +2301,7 @@ static int mgsl_chars_in_buffer(struct tty_struct *tty)
*/
static void mgsl_flush_buffer(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2329,7 +2329,7 @@ static void mgsl_flush_buffer(struct tty_struct *tty)
*/
static void mgsl_send_xchar(struct tty_struct *tty, char ch)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2358,7 +2358,7 @@ static void mgsl_send_xchar(struct tty_struct *tty, char ch)
*/
static void mgsl_throttle(struct tty_struct * tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2388,7 +2388,7 @@ static void mgsl_throttle(struct tty_struct * tty)
*/
static void mgsl_unthrottle(struct tty_struct * tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2841,7 +2841,7 @@ static int modem_input_wait(struct mgsl_struct *info,int arg)
*/
static int tiocmget(struct tty_struct *tty, struct file *file)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned int result;
unsigned long flags;
@@ -2867,7 +2867,7 @@ static int tiocmget(struct tty_struct *tty, struct file *file)
static int tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2898,7 +2898,7 @@ static int tiocmset(struct tty_struct *tty, struct file *file,
*/
static int mgsl_break(struct tty_struct *tty, int break_state)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2932,7 +2932,7 @@ static int mgsl_break(struct tty_struct *tty, int break_state)
static int mgsl_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
int ret;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3042,7 +3042,7 @@ static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigne
*/
static void mgsl_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3096,7 +3096,7 @@ static void mgsl_set_termios(struct tty_struct *tty, struct ktermios *old_termio
*/
static void mgsl_close(struct tty_struct *tty, struct file * filp)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
if (mgsl_paranoia_check(info, tty->name, "mgsl_close"))
return;
@@ -3104,70 +3104,18 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_close(%s) entry, count=%d\n",
__FILE__,__LINE__, info->device_name, info->port.count);
-
- if (!info->port.count)
- return;
- if (tty_hung_up_p(filp))
+ if (tty_port_close_start(&info->port, tty, filp) == 0)
goto cleanup;
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->port.count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- printk("mgsl_close: bad refcount; tty->count is 1, "
- "info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
-
- info->port.count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->port.count)
- goto cleanup;
-
- info->port.flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):mgsl_close(%s) calling tty_wait_until_sent\n",
- __FILE__,__LINE__, info->device_name );
- tty_wait_until_sent(tty, info->port.closing_wait);
- }
-
if (info->port.flags & ASYNC_INITIALIZED)
mgsl_wait_until_sent(tty, info->timeout);
-
mgsl_flush_buffer(tty);
-
tty_ldisc_flush(tty);
-
shutdown(info);
-
- tty->closing = 0;
+
+ tty_port_close_end(&info->port, tty);
info->port.tty = NULL;
-
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
- }
- wake_up_interruptible(&info->port.open_wait);
- }
-
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->port.close_wait);
-
cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__,
@@ -3188,7 +3136,7 @@ cleanup:
*/
static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
unsigned long orig_jiffies, char_time;
if (!info )
@@ -3261,7 +3209,7 @@ exit:
*/
static void mgsl_hangup(struct tty_struct *tty)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_hangup(%s)\n",
@@ -3281,6 +3229,35 @@ static void mgsl_hangup(struct tty_struct *tty)
} /* end of mgsl_hangup() */
+/*
+ * carrier_raised()
+ *
+ * Return true if carrier is raised
+ */
+
+static int carrier_raised(struct tty_port *port)
+{
+ unsigned long flags;
+ struct mgsl_struct *info = container_of(port, struct mgsl_struct, port);
+
+ spin_lock_irqsave(&info->irq_spinlock, flags);
+ usc_get_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock, flags);
+ return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
+}
+
+static void raise_dtr_rts(struct tty_port *port)
+{
+ struct mgsl_struct *info = container_of(port, struct mgsl_struct, port);
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+}
+
+
/* block_til_ready()
*
* Block the current process until the specified port
@@ -3302,6 +3279,8 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
bool do_clocal = false;
bool extra_count = false;
unsigned long flags;
+ int dcd;
+ struct tty_port *port = &info->port;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready on %s\n",
@@ -3309,7 +3288,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
/* nonblock mode is set or port is not enabled */
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -3318,50 +3297,42 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
/* Wait for carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* mgsl_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready before block on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
spin_lock_irqsave(&info->irq_spinlock, flags);
if (!tty_hung_up_p(filp)) {
extra_count = true;
- info->port.count--;
+ port->count--;
}
spin_unlock_irqrestore(&info->irq_spinlock, flags);
- info->port.blocked_open++;
+ port->blocked_open++;
while (1) {
- if (tty->termios->c_cflag & CBAUD) {
- spin_lock_irqsave(&info->irq_spinlock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- usc_set_serial_signals(info);
- spin_unlock_irqrestore(&info->irq_spinlock,flags);
- }
+ if (tty->termios->c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
- retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){
+ retval = (port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
- spin_lock_irqsave(&info->irq_spinlock,flags);
- usc_get_serial_signals(info);
- spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ dcd = tty_port_carrier_raised(&info->port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
+ if (!(port->flags & ASYNC_CLOSING) && (do_clocal || dcd))
break;
- }
if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -3370,24 +3341,25 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
schedule();
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
+ /* FIXME: Racy on hangup during close wait */
if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
if (!retval)
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return retval;
@@ -4304,6 +4276,12 @@ static void mgsl_add_device( struct mgsl_struct *info )
} /* end of mgsl_add_device() */
+static const struct tty_port_operations mgsl_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
+
/* mgsl_allocate_device()
*
* Allocate and initialize a device instance structure
@@ -4322,6 +4300,7 @@ static struct mgsl_struct* mgsl_allocate_device(void)
printk("Error can't allocate device instance data\n");
} else {
tty_port_init(&info->port);
+ info->port.ops = &mgsl_port_ops;
info->magic = MGSL_MAGIC;
INIT_WORK(&info->task, mgsl_bh_handler);
info->max_frame_size = 4096;
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 08911ed6649..53544e21f19 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -720,44 +720,9 @@ static void close(struct tty_struct *tty, struct file *filp)
return;
DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count));
- if (!info->port.count)
- return;
-
- if (tty_hung_up_p(filp))
- goto cleanup;
-
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->port.count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- DBGERR(("%s close: bad refcount; tty->count=1, "
- "info->port.count=%d\n", info->device_name, info->port.count));
- info->port.count = 1;
- }
-
- info->port.count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->port.count)
+ if (tty_port_close_start(&info->port, tty, filp) == 0)
goto cleanup;
- info->port.flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- DBGINFO(("%s call tty_wait_until_sent\n", info->device_name));
- tty_wait_until_sent(tty, info->port.closing_wait);
- }
-
if (info->port.flags & ASYNC_INITIALIZED)
wait_until_sent(tty, info->timeout);
flush_buffer(tty);
@@ -765,20 +730,8 @@ static void close(struct tty_struct *tty, struct file *filp)
shutdown(info);
- tty->closing = 0;
+ tty_port_close_end(&info->port, tty);
info->port.tty = NULL;
-
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
- }
- wake_up_interruptible(&info->port.open_wait);
- }
-
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->port.close_wait);
-
cleanup:
DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count));
}
@@ -3132,6 +3085,29 @@ static int tiocmset(struct tty_struct *tty, struct file *file,
return 0;
}
+static int carrier_raised(struct tty_port *port)
+{
+ unsigned long flags;
+ struct slgt_info *info = container_of(port, struct slgt_info, port);
+
+ spin_lock_irqsave(&info->lock,flags);
+ get_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+ return (info->signals & SerialSignal_DCD) ? 1 : 0;
+}
+
+static void raise_dtr_rts(struct tty_port *port)
+{
+ unsigned long flags;
+ struct slgt_info *info = container_of(port, struct slgt_info, port);
+
+ spin_lock_irqsave(&info->lock,flags);
+ info->signals |= SerialSignal_RTS + SerialSignal_DTR;
+ set_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+}
+
+
/*
* block current process until the device is ready to open
*/
@@ -3143,12 +3119,14 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
bool do_clocal = false;
bool extra_count = false;
unsigned long flags;
+ int cd;
+ struct tty_port *port = &info->port;
DBGINFO(("%s block_til_ready\n", tty->driver->name));
if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
/* nonblock mode is set or port is not enabled */
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -3157,46 +3135,38 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
/* Wait for carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp)) {
extra_count = true;
- info->port.count--;
+ port->count--;
}
spin_unlock_irqrestore(&info->lock, flags);
- info->port.blocked_open++;
+ port->blocked_open++;
while (1) {
- if ((tty->termios->c_cflag & CBAUD)) {
- spin_lock_irqsave(&info->lock,flags);
- info->signals |= SerialSignal_RTS + SerialSignal_DTR;
- set_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
- }
+ if ((tty->termios->c_cflag & CBAUD))
+ tty_port_raise_dtr_rts(port);
set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
- retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){
+ retval = (port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
- spin_lock_irqsave(&info->lock,flags);
- get_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
+ cd = tty_port_carrier_raised(port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (info->signals & SerialSignal_DCD)) ) {
+ if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd ))
break;
- }
if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -3208,14 +3178,14 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
if (!retval)
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
DBGINFO(("%s block_til_ready ready, rc=%d\n", tty->driver->name, retval));
return retval;
@@ -3444,6 +3414,11 @@ static void add_device(struct slgt_info *info)
#endif
}
+static const struct tty_port_operations slgt_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
/*
* allocate device instance structure, return NULL on failure
*/
@@ -3458,6 +3433,7 @@ static struct slgt_info *alloc_dev(int adapter_num, int port_num, struct pci_dev
driver_name, adapter_num, port_num));
} else {
tty_port_init(&info->port);
+ info->port.ops = &slgt_port_ops;
info->magic = MGSL_MAGIC;
INIT_WORK(&info->task, bh_handler);
info->max_frame_size = 4096;
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 6bdb44f7bec..7b0c5b2dd26 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -558,6 +558,7 @@ static void release_resources(SLMP_INFO *info);
static int startup(SLMP_INFO *info);
static int block_til_ready(struct tty_struct *tty, struct file * filp,SLMP_INFO *info);
+static int carrier_raised(struct tty_port *port);
static void shutdown(SLMP_INFO *info);
static void program_hw(SLMP_INFO *info);
static void change_params(SLMP_INFO *info);
@@ -800,7 +801,7 @@ cleanup:
*/
static void close(struct tty_struct *tty, struct file *filp)
{
- SLMP_INFO * info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO * info = tty->driver_data;
if (sanity_check(info, tty->name, "close"))
return;
@@ -809,70 +810,18 @@ static void close(struct tty_struct *tty, struct file *filp)
printk("%s(%d):%s close() entry, count=%d\n",
__FILE__,__LINE__, info->device_name, info->port.count);
- if (!info->port.count)
- return;
-
- if (tty_hung_up_p(filp))
- goto cleanup;
-
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->port.count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- printk("%s(%d):%s close: bad refcount; tty->count is 1, "
- "info->port.count is %d\n",
- __FILE__,__LINE__, info->device_name, info->port.count);
- info->port.count = 1;
- }
-
- info->port.count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->port.count)
+ if (tty_port_close_start(&info->port, tty, filp) == 0)
goto cleanup;
-
- info->port.flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):%s close() calling tty_wait_until_sent\n",
- __FILE__,__LINE__, info->device_name );
- tty_wait_until_sent(tty, info->port.closing_wait);
- }
-
+
if (info->port.flags & ASYNC_INITIALIZED)
wait_until_sent(tty, info->timeout);
flush_buffer(tty);
-
tty_ldisc_flush(tty);
-
shutdown(info);
- tty->closing = 0;
+ tty_port_close_end(&info->port, tty);
info->port.tty = NULL;
-
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
- }
- wake_up_interruptible(&info->port.open_wait);
- }
-
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->port.close_wait);
-
cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__,
@@ -884,7 +833,7 @@ cleanup:
*/
static void hangup(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s hangup()\n",
@@ -907,7 +856,7 @@ static void hangup(struct tty_struct *tty)
*/
static void set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -960,7 +909,7 @@ static int write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
int c, ret = 0;
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1038,7 +987,7 @@ cleanup:
*/
static int put_char(struct tty_struct *tty, unsigned char ch)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
int ret = 0;
@@ -1075,7 +1024,7 @@ static int put_char(struct tty_struct *tty, unsigned char ch)
*/
static void send_xchar(struct tty_struct *tty, char ch)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1099,7 +1048,7 @@ static void send_xchar(struct tty_struct *tty, char ch)
*/
static void wait_until_sent(struct tty_struct *tty, int timeout)
{
- SLMP_INFO * info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO * info = tty->driver_data;
unsigned long orig_jiffies, char_time;
if (!info )
@@ -1166,7 +1115,7 @@ exit:
*/
static int write_room(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
int ret;
if (sanity_check(info, tty->name, "write_room"))
@@ -1193,7 +1142,7 @@ static int write_room(struct tty_struct *tty)
*/
static void flush_chars(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if ( debug_level >= DEBUG_LEVEL_INFO )
@@ -1232,7 +1181,7 @@ static void flush_chars(struct tty_struct *tty)
*/
static void flush_buffer(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1254,7 +1203,7 @@ static void flush_buffer(struct tty_struct *tty)
*/
static void tx_hold(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (sanity_check(info, tty->name, "tx_hold"))
@@ -1274,7 +1223,7 @@ static void tx_hold(struct tty_struct *tty)
*/
static void tx_release(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (sanity_check(info, tty->name, "tx_release"))
@@ -1304,7 +1253,7 @@ static void tx_release(struct tty_struct *tty)
static int do_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
int error;
struct mgsl_icount cnow; /* kernel counter temps */
struct serial_icounter_struct __user *p_cuser; /* user space */
@@ -1515,7 +1464,7 @@ done:
*/
static int chars_in_buffer(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
if (sanity_check(info, tty->name, "chars_in_buffer"))
return 0;
@@ -1531,7 +1480,7 @@ static int chars_in_buffer(struct tty_struct *tty)
*/
static void throttle(struct tty_struct * tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1556,7 +1505,7 @@ static void throttle(struct tty_struct * tty)
*/
static void unthrottle(struct tty_struct * tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1587,7 +1536,7 @@ static void unthrottle(struct tty_struct * tty)
static int set_break(struct tty_struct *tty, int break_state)
{
unsigned char RegValue;
- SLMP_INFO * info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO * info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3269,7 +3218,7 @@ static int modem_input_wait(SLMP_INFO *info,int arg)
*/
static int tiocmget(struct tty_struct *tty, struct file *file)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned int result;
unsigned long flags;
@@ -3295,7 +3244,7 @@ static int tiocmget(struct tty_struct *tty, struct file *file)
static int tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3318,7 +3267,28 @@ static int tiocmset(struct tty_struct *tty, struct file *file,
return 0;
}
+static int carrier_raised(struct tty_port *port)
+{
+ SLMP_INFO *info = container_of(port, SLMP_INFO, port);
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->lock,flags);
+ get_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+ return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
+}
+
+static void raise_dtr_rts(struct tty_port *port)
+{
+ SLMP_INFO *info = container_of(port, SLMP_INFO, port);
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->lock,flags);
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ set_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+}
/* Block the current process until the specified port is ready to open.
*/
@@ -3330,6 +3300,8 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
bool do_clocal = false;
bool extra_count = false;
unsigned long flags;
+ int cd;
+ struct tty_port *port = &info->port;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready()\n",
@@ -3338,7 +3310,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
/* nonblock mode is set or port is not enabled */
/* just verify that callout device is not active */
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -3347,50 +3319,42 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
/* Wait for carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready() before block, count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp)) {
extra_count = true;
- info->port.count--;
+ port->count--;
}
spin_unlock_irqrestore(&info->lock, flags);
- info->port.blocked_open++;
+ port->blocked_open++;
while (1) {
- if ((tty->termios->c_cflag & CBAUD)) {
- spin_lock_irqsave(&info->lock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- set_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
- }
+ if (tty->termios->c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
- retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){
+ retval = (port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
- spin_lock_irqsave(&info->lock,flags);
- get_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
+ cd = tty_port_carrier_raised(port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
+ if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd))
break;
- }
if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -3399,24 +3363,24 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready() count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
schedule();
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready() after, count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
if (!retval)
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return retval;
}
@@ -3782,6 +3746,11 @@ static void add_device(SLMP_INFO *info)
#endif
}
+static const struct tty_port_operations port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
/* Allocate and initialize a device instance structure
*
* Return Value: pointer to SLMP_INFO if success, otherwise NULL
@@ -3798,6 +3767,7 @@ static SLMP_INFO *alloc_dev(int adapter_num, int port_num, struct pci_dev *pdev)
__FILE__,__LINE__, adapter_num, port_num);
} else {
tty_port_init(&info->port);
+ info->port.ops = &port_ops;
info->magic = MGSL_MAGIC;
INIT_WORK(&info->task, bh_handler);
info->max_frame_size = 4096;
@@ -3940,6 +3910,7 @@ static const struct tty_operations ops = {
.tiocmset = tiocmset,
};
+
static void synclinkmp_cleanup(void)
{
int rc;
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index ce0d9da52a8..d41b9f6f790 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -82,7 +82,7 @@ static void sysrq_handle_loglevel(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_loglevel_op = {
.handler = sysrq_handle_loglevel,
- .help_msg = "loglevel0-8",
+ .help_msg = "loglevel(0-9)",
.action_msg = "Changing Loglevel",
.enable_mask = SYSRQ_ENABLE_LOG,
};
@@ -233,7 +233,7 @@ static void sysrq_handle_showallcpus(int key, struct tty_struct *tty)
static struct sysrq_key_op sysrq_showallcpus_op = {
.handler = sysrq_handle_showallcpus,
- .help_msg = "aLlcpus",
+ .help_msg = "show-backtrace-all-active-cpus(L)",
.action_msg = "Show backtrace of all active CPUs",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -247,7 +247,7 @@ static void sysrq_handle_showregs(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_showregs_op = {
.handler = sysrq_handle_showregs,
- .help_msg = "showPc",
+ .help_msg = "show-registers(P)",
.action_msg = "Show Regs",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -258,7 +258,7 @@ static void sysrq_handle_showstate(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_showstate_op = {
.handler = sysrq_handle_showstate,
- .help_msg = "showTasks",
+ .help_msg = "show-task-states(T)",
.action_msg = "Show State",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -269,11 +269,27 @@ static void sysrq_handle_showstate_blocked(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_showstate_blocked_op = {
.handler = sysrq_handle_showstate_blocked,
- .help_msg = "shoW-blocked-tasks",
+ .help_msg = "show-blocked-tasks(W)",
.action_msg = "Show Blocked State",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
+#ifdef CONFIG_TRACING
+#include <linux/ftrace.h>
+
+static void sysrq_ftrace_dump(int key, struct tty_struct *tty)
+{
+ ftrace_dump();
+}
+static struct sysrq_key_op sysrq_ftrace_dump_op = {
+ .handler = sysrq_ftrace_dump,
+ .help_msg = "dumpZ-ftrace-buffer",
+ .action_msg = "Dump ftrace buffer",
+ .enable_mask = SYSRQ_ENABLE_DUMP,
+};
+#else
+#define sysrq_ftrace_dump_op (*(struct sysrq_key_op *)0)
+#endif
static void sysrq_handle_showmem(int key, struct tty_struct *tty)
{
@@ -281,7 +297,7 @@ static void sysrq_handle_showmem(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_showmem_op = {
.handler = sysrq_handle_showmem,
- .help_msg = "showMem",
+ .help_msg = "show-memory-usage(M)",
.action_msg = "Show Memory",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -307,7 +323,7 @@ static void sysrq_handle_term(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_term_op = {
.handler = sysrq_handle_term,
- .help_msg = "tErm",
+ .help_msg = "terminate-all-tasks(E)",
.action_msg = "Terminate All Tasks",
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
@@ -325,7 +341,7 @@ static void sysrq_handle_moom(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_moom_op = {
.handler = sysrq_handle_moom,
- .help_msg = "Full",
+ .help_msg = "memory-full-oom-kill(F)",
.action_msg = "Manual OOM execution",
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
@@ -337,7 +353,7 @@ static void sysrq_handle_kill(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_kill_op = {
.handler = sysrq_handle_kill,
- .help_msg = "kIll",
+ .help_msg = "kill-all-tasks(I)",
.action_msg = "Kill All Tasks",
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
@@ -348,7 +364,7 @@ static void sysrq_handle_unrt(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_unrt_op = {
.handler = sysrq_handle_unrt,
- .help_msg = "Nice",
+ .help_msg = "nice-all-RT-tasks(N)",
.action_msg = "Nice All RT Tasks",
.enable_mask = SYSRQ_ENABLE_RTNICE,
};
@@ -406,7 +422,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
NULL, /* x */
/* y: May be registered on sparc64 for global register dump */
NULL, /* y */
- NULL /* z */
+ &sysrq_ftrace_dump_op, /* z */
};
/* key2index calculation, -1 on invalid index */
diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index ab18c1e7b11..70efba2ee05 100644
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -273,12 +273,23 @@ static void tpm_nsc_remove(struct device *dev)
}
}
-static struct device_driver nsc_drv = {
- .name = "tpm_nsc",
- .bus = &platform_bus_type,
- .owner = THIS_MODULE,
- .suspend = tpm_pm_suspend,
- .resume = tpm_pm_resume,
+static int tpm_nsc_suspend(struct platform_device *dev, pm_message_t msg)
+{
+ return tpm_pm_suspend(&dev->dev, msg);
+}
+
+static int tpm_nsc_resume(struct platform_device *dev)
+{
+ return tpm_pm_resume(&dev->dev);
+}
+
+static struct platform_driver nsc_drv = {
+ .suspend = tpm_nsc_suspend,
+ .resume = tpm_nsc_resume,
+ .driver = {
+ .name = "tpm_nsc",
+ .owner = THIS_MODULE,
+ },
};
static int __init init_nsc(void)
@@ -297,7 +308,7 @@ static int __init init_nsc(void)
return -ENODEV;
}
- err = driver_register(&nsc_drv);
+ err = platform_driver_register(&nsc_drv);
if (err)
return err;
@@ -308,17 +319,15 @@ static int __init init_nsc(void)
/* enable the DPM module */
tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);
- pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
+ pdev = platform_device_alloc("tpm_nscl0", -1);
if (!pdev) {
rc = -ENOMEM;
goto err_unreg_drv;
}
- pdev->name = "tpm_nscl0";
- pdev->id = -1;
pdev->num_resources = 0;
+ pdev->dev.driver = &nsc_drv.driver;
pdev->dev.release = tpm_nsc_remove;
- pdev->dev.driver = &nsc_drv;
if ((rc = platform_device_register(pdev)) < 0)
goto err_free_dev;
@@ -377,7 +386,7 @@ err_unreg_dev:
err_free_dev:
kfree(pdev);
err_unreg_drv:
- driver_unregister(&nsc_drv);
+ platform_driver_unregister(&nsc_drv);
return rc;
}
@@ -390,7 +399,7 @@ static void __exit cleanup_nsc(void)
pdev = NULL;
}
- driver_unregister(&nsc_drv);
+ platform_driver_unregister(&nsc_drv);
}
module_init(init_nsc);
diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c
index 5787249934c..34ab6d798f8 100644
--- a/drivers/char/tty_audit.c
+++ b/drivers/char/tty_audit.c
@@ -67,6 +67,29 @@ static void tty_audit_buf_put(struct tty_audit_buf *buf)
tty_audit_buf_free(buf);
}
+static void tty_audit_log(const char *description, struct task_struct *tsk,
+ uid_t loginuid, unsigned sessionid, int major,
+ int minor, unsigned char *data, size_t size)
+{
+ struct audit_buffer *ab;
+
+ ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_TTY);
+ if (ab) {
+ char name[sizeof(tsk->comm)];
+ uid_t uid = task_uid(tsk);
+
+ audit_log_format(ab, "%s pid=%u uid=%u auid=%u ses=%u "
+ "major=%d minor=%d comm=", description,
+ tsk->pid, uid, loginuid, sessionid,
+ major, minor);
+ get_task_comm(name, tsk);
+ audit_log_untrustedstring(ab, name);
+ audit_log_format(ab, " data=");
+ audit_log_n_hex(ab, data, size);
+ audit_log_end(ab);
+ }
+}
+
/**
* tty_audit_buf_push - Push buffered data out
*
@@ -77,25 +100,12 @@ static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid,
unsigned int sessionid,
struct tty_audit_buf *buf)
{
- struct audit_buffer *ab;
-
if (buf->valid == 0)
return;
if (audit_enabled == 0)
return;
- ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_TTY);
- if (ab) {
- char name[sizeof(tsk->comm)];
-
- audit_log_format(ab, "tty pid=%u uid=%u auid=%u ses=%u "
- "major=%d minor=%d comm=", tsk->pid, tsk->uid,
- loginuid, sessionid, buf->major, buf->minor);
- get_task_comm(name, tsk);
- audit_log_untrustedstring(ab, name);
- audit_log_format(ab, " data=");
- audit_log_n_hex(ab, buf->data, buf->valid);
- audit_log_end(ab);
- }
+ tty_audit_log("tty", tsk, loginuid, sessionid, buf->major, buf->minor,
+ buf->data, buf->valid);
buf->valid = 0;
}
@@ -150,6 +160,42 @@ void tty_audit_fork(struct signal_struct *sig)
}
/**
+ * tty_audit_tiocsti - Log TIOCSTI
+ */
+void tty_audit_tiocsti(struct tty_struct *tty, char ch)
+{
+ struct tty_audit_buf *buf;
+ int major, minor, should_audit;
+
+ spin_lock_irq(&current->sighand->siglock);
+ should_audit = current->signal->audit_tty;
+ buf = current->signal->tty_audit_buf;
+ if (buf)
+ atomic_inc(&buf->count);
+ spin_unlock_irq(&current->sighand->siglock);
+
+ major = tty->driver->major;
+ minor = tty->driver->minor_start + tty->index;
+ if (buf) {
+ mutex_lock(&buf->mutex);
+ if (buf->major == major && buf->minor == minor)
+ tty_audit_buf_push_current(buf);
+ mutex_unlock(&buf->mutex);
+ tty_audit_buf_put(buf);
+ }
+
+ if (should_audit && audit_enabled) {
+ uid_t auid;
+ unsigned int sessionid;
+
+ auid = audit_get_loginuid(current);
+ sessionid = audit_get_sessionid(current);
+ tty_audit_log("ioctl=TIOCSTI", current, auid, sessionid, major,
+ minor, &ch, 1);
+ }
+}
+
+/**
* tty_audit_push_task - Flush task's pending audit data
*/
void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid, u32 sessionid)
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 1412a8d1e58..d33e5ab0617 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1111,9 +1111,7 @@ void tty_write_message(struct tty_struct *tty, char *msg)
* Locks the line discipline as required
* Writes to the tty driver are serialized by the atomic_write_lock
* and are then processed in chunks to the device. The line discipline
- * write method will not be involked in parallel for each device
- * The line discipline write method is called under the big
- * kernel lock for historical reasons. New code should not rely on this.
+ * write method will not be invoked in parallel for each device.
*/
static ssize_t tty_write(struct file *file, const char __user *buf,
@@ -1213,7 +1211,7 @@ static void tty_line_name(struct tty_driver *driver, int index, char *p)
* be held until the 'fast-open' is also done. Will change once we
* have refcounting in the driver and per driver locking
*/
-struct tty_struct *tty_driver_lookup_tty(struct tty_driver *driver,
+static struct tty_struct *tty_driver_lookup_tty(struct tty_driver *driver,
struct inode *inode, int idx)
{
struct tty_struct *tty;
@@ -2018,6 +2016,7 @@ static int tiocsti(struct tty_struct *tty, char __user *p)
return -EPERM;
if (get_user(ch, p))
return -EFAULT;
+ tty_audit_tiocsti(tty, ch);
ld = tty_ldisc_ref_wait(tty);
ld->ops->receive_buf(tty, &ch, &mbz, 1);
tty_ldisc_deref(ld);
@@ -2049,7 +2048,6 @@ static int tiocgwinsz(struct tty_struct *tty, struct winsize __user *arg)
/**
* tty_do_resize - resize event
* @tty: tty being resized
- * @real_tty: real tty (not the same as tty if using a pty/tty pair)
* @rows: rows (character)
* @cols: cols (character)
*
@@ -2057,41 +2055,34 @@ static int tiocgwinsz(struct tty_struct *tty, struct winsize __user *arg)
* peform a terminal resize correctly
*/
-int tty_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize *ws)
+int tty_do_resize(struct tty_struct *tty, struct winsize *ws)
{
- struct pid *pgrp, *rpgrp;
+ struct pid *pgrp;
unsigned long flags;
- /* For a PTY we need to lock the tty side */
- mutex_lock(&real_tty->termios_mutex);
- if (!memcmp(ws, &real_tty->winsize, sizeof(*ws)))
+ /* Lock the tty */
+ mutex_lock(&tty->termios_mutex);
+ if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
goto done;
/* Get the PID values and reference them so we can
avoid holding the tty ctrl lock while sending signals */
spin_lock_irqsave(&tty->ctrl_lock, flags);
pgrp = get_pid(tty->pgrp);
- rpgrp = get_pid(real_tty->pgrp);
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
if (pgrp)
kill_pgrp(pgrp, SIGWINCH, 1);
- if (rpgrp != pgrp && rpgrp)
- kill_pgrp(rpgrp, SIGWINCH, 1);
-
put_pid(pgrp);
- put_pid(rpgrp);
tty->winsize = *ws;
- real_tty->winsize = *ws;
done:
- mutex_unlock(&real_tty->termios_mutex);
+ mutex_unlock(&tty->termios_mutex);
return 0;
}
/**
* tiocswinsz - implement window size set ioctl
- * @tty; tty
+ * @tty; tty side of tty
* @arg: user buffer for result
*
* Copies the user idea of the window size to the kernel. Traditionally
@@ -2104,17 +2095,16 @@ done:
* then calls into the default method.
*/
-static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize __user *arg)
+static int tiocswinsz(struct tty_struct *tty, struct winsize __user *arg)
{
struct winsize tmp_ws;
if (copy_from_user(&tmp_ws, arg, sizeof(*arg)))
return -EFAULT;
if (tty->ops->resize)
- return tty->ops->resize(tty, real_tty, &tmp_ws);
+ return tty->ops->resize(tty, &tmp_ws);
else
- return tty_do_resize(tty, real_tty, &tmp_ws);
+ return tty_do_resize(tty, &tmp_ws);
}
/**
@@ -2539,7 +2529,7 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case TIOCGWINSZ:
return tiocgwinsz(real_tty, p);
case TIOCSWINSZ:
- return tiocswinsz(tty, real_tty, p);
+ return tiocswinsz(real_tty, p);
case TIOCCONS:
return real_tty != tty ? -EINVAL : tioccons(file);
case FIONBIO:
@@ -2784,6 +2774,8 @@ void initialize_tty_struct(struct tty_struct *tty,
INIT_WORK(&tty->hangup_work, do_tty_hangup);
mutex_init(&tty->atomic_read_lock);
mutex_init(&tty->atomic_write_lock);
+ mutex_init(&tty->output_lock);
+ mutex_init(&tty->echo_lock);
spin_lock_init(&tty->read_lock);
spin_lock_init(&tty->ctrl_lock);
INIT_LIST_HEAD(&tty->tty_files);
diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c
index f307f135cbf..7a84b406a95 100644
--- a/drivers/char/tty_ldisc.c
+++ b/drivers/char/tty_ldisc.c
@@ -316,8 +316,7 @@ struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *tty)
{
/* wait_event is a macro */
wait_event(tty_ldisc_wait, tty_ldisc_try(tty));
- if (tty->ldisc.refcount == 0)
- printk(KERN_ERR "tty_ldisc_ref_wait\n");
+ WARN_ON(tty->ldisc.refcount == 0);
return &tty->ldisc;
}
@@ -376,15 +375,17 @@ EXPORT_SYMBOL_GPL(tty_ldisc_deref);
* @tty: terminal to activate ldisc on
*
* Set the TTY_LDISC flag when the line discipline can be called
- * again. Do necessary wakeups for existing sleepers.
+ * again. Do necessary wakeups for existing sleepers. Clear the LDISC
+ * changing flag to indicate any ldisc change is now over.
*
- * Note: nobody should set this bit except via this function. Clearing
- * directly is allowed.
+ * Note: nobody should set the TTY_LDISC bit except via this function.
+ * Clearing directly is allowed.
*/
void tty_ldisc_enable(struct tty_struct *tty)
{
set_bit(TTY_LDISC, &tty->flags);
+ clear_bit(TTY_LDISC_CHANGING, &tty->flags);
wake_up(&tty_ldisc_wait);
}
@@ -496,7 +497,14 @@ restart:
* reference to the line discipline. The TTY_LDISC bit
* prevents anyone taking a reference once it is clear.
* We need the lock to avoid racing reference takers.
+ *
+ * We must clear the TTY_LDISC bit here to avoid a livelock
+ * with a userspace app continually trying to use the tty in
+ * parallel to the change and re-referencing the tty.
*/
+ clear_bit(TTY_LDISC, &tty->flags);
+ if (o_tty)
+ clear_bit(TTY_LDISC, &o_tty->flags);
spin_lock_irqsave(&tty_ldisc_lock, flags);
if (tty->ldisc.refcount || (o_tty && o_tty->ldisc.refcount)) {
@@ -528,7 +536,7 @@ restart:
* If the TTY_LDISC bit is set, then we are racing against
* another ldisc change
*/
- if (!test_bit(TTY_LDISC, &tty->flags)) {
+ if (test_bit(TTY_LDISC_CHANGING, &tty->flags)) {
struct tty_ldisc *ld;
spin_unlock_irqrestore(&tty_ldisc_lock, flags);
tty_ldisc_put(new_ldisc.ops);
@@ -536,10 +544,14 @@ restart:
tty_ldisc_deref(ld);
goto restart;
}
-
- clear_bit(TTY_LDISC, &tty->flags);
+ /*
+ * This flag is used to avoid two parallel ldisc changes. Once
+ * open and close are fine grained locked this may work better
+ * as a mutex shared with the open/close/hup paths
+ */
+ set_bit(TTY_LDISC_CHANGING, &tty->flags);
if (o_tty)
- clear_bit(TTY_LDISC, &o_tty->flags);
+ set_bit(TTY_LDISC_CHANGING, &o_tty->flags);
spin_unlock_irqrestore(&tty_ldisc_lock, flags);
/*
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index c8f8024cb40..9b8004c7268 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -7,6 +7,7 @@
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
+#include <linux/serial.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/slab.h>
@@ -94,3 +95,227 @@ void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty)
spin_unlock_irqrestore(&port->lock, flags);
}
EXPORT_SYMBOL(tty_port_tty_set);
+
+/**
+ * tty_port_hangup - hangup helper
+ * @port: tty port
+ *
+ * Perform port level tty hangup flag and count changes. Drop the tty
+ * reference.
+ */
+
+void tty_port_hangup(struct tty_port *port)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ port->count = 0;
+ port->flags &= ~ASYNC_NORMAL_ACTIVE;
+ if (port->tty)
+ tty_kref_put(port->tty);
+ port->tty = NULL;
+ spin_unlock_irqrestore(&port->lock, flags);
+ wake_up_interruptible(&port->open_wait);
+}
+EXPORT_SYMBOL(tty_port_hangup);
+
+/**
+ * tty_port_carrier_raised - carrier raised check
+ * @port: tty port
+ *
+ * Wrapper for the carrier detect logic. For the moment this is used
+ * to hide some internal details. This will eventually become entirely
+ * internal to the tty port.
+ */
+
+int tty_port_carrier_raised(struct tty_port *port)
+{
+ if (port->ops->carrier_raised == NULL)
+ return 1;
+ return port->ops->carrier_raised(port);
+}
+EXPORT_SYMBOL(tty_port_carrier_raised);
+
+/**
+ * tty_port_raise_dtr_rts - Riase DTR/RTS
+ * @port: tty port
+ *
+ * Wrapper for the DTR/RTS raise logic. For the moment this is used
+ * to hide some internal details. This will eventually become entirely
+ * internal to the tty port.
+ */
+
+void tty_port_raise_dtr_rts(struct tty_port *port)
+{
+ if (port->ops->raise_dtr_rts)
+ port->ops->raise_dtr_rts(port);
+}
+EXPORT_SYMBOL(tty_port_raise_dtr_rts);
+
+/**
+ * tty_port_block_til_ready - Waiting logic for tty open
+ * @port: the tty port being opened
+ * @tty: the tty device being bound
+ * @filp: the file pointer of the opener
+ *
+ * Implement the core POSIX/SuS tty behaviour when opening a tty device.
+ * Handles:
+ * - hangup (both before and during)
+ * - non blocking open
+ * - rts/dtr/dcd
+ * - signals
+ * - port flags and counts
+ *
+ * The passed tty_port must implement the carrier_raised method if it can
+ * do carrier detect and the raise_dtr_rts method if it supports software
+ * management of these lines. Note that the dtr/rts raise is done each
+ * iteration as a hangup may have previously dropped them while we wait.
+ */
+
+int tty_port_block_til_ready(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp)
+{
+ int do_clocal = 0, retval;
+ unsigned long flags;
+ DECLARE_WAITQUEUE(wait, current);
+ int cd;
+
+ /* block if port is in the process of being closed */
+ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
+ interruptible_sleep_on(&port->close_wait);
+ if (port->flags & ASYNC_HUP_NOTIFY)
+ return -EAGAIN;
+ else
+ return -ERESTARTSYS;
+ }
+
+ /* if non-blocking mode is set we can pass directly to open unless
+ the port has just hung up or is in another error state */
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (tty->flags & (1 << TTY_IO_ERROR))) {
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ if (C_CLOCAL(tty))
+ do_clocal = 1;
+
+ /* Block waiting until we can proceed. We may need to wait for the
+ carrier, but we must also wait for any close that is in progress
+ before the next open may complete */
+
+ retval = 0;
+ add_wait_queue(&port->open_wait, &wait);
+
+ /* The port lock protects the port counts */
+ spin_lock_irqsave(&port->lock, flags);
+ if (!tty_hung_up_p(filp))
+ port->count--;
+ port->blocked_open++;
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ while (1) {
+ /* Indicate we are open */
+ if (tty->termios->c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ /* Check for a hangup or uninitialised port. Return accordingly */
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
+ if (port->flags & ASYNC_HUP_NOTIFY)
+ retval = -EAGAIN;
+ else
+ retval = -ERESTARTSYS;
+ break;
+ }
+ /* Probe the carrier. For devices with no carrier detect this
+ will always return true */
+ cd = tty_port_carrier_raised(port);
+ if (!(port->flags & ASYNC_CLOSING) &&
+ (do_clocal || cd))
+ break;
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+ schedule();
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&port->open_wait, &wait);
+
+ /* Update counts. A parallel hangup will have set count to zero and
+ we must not mess that up further */
+ spin_lock_irqsave(&port->lock, flags);
+ if (!tty_hung_up_p(filp))
+ port->count++;
+ port->blocked_open--;
+ if (retval == 0)
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ spin_unlock_irqrestore(&port->lock, flags);
+ return 0;
+
+}
+EXPORT_SYMBOL(tty_port_block_til_ready);
+
+int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct file *filp)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ if (tty_hung_up_p(filp)) {
+ spin_unlock_irqrestore(&port->lock, flags);
+ return 0;
+ }
+
+ if( tty->count == 1 && port->count != 1) {
+ printk(KERN_WARNING
+ "tty_port_close_start: tty->count = 1 port count = %d.\n",
+ port->count);
+ port->count = 1;
+ }
+ if (--port->count < 0) {
+ printk(KERN_WARNING "tty_port_close_start: count = %d\n",
+ port->count);
+ port->count = 0;
+ }
+
+ if (port->count) {
+ spin_unlock_irqrestore(&port->lock, flags);
+ return 0;
+ }
+ port->flags |= ASYNC_CLOSING;
+ tty->closing = 1;
+ spin_unlock_irqrestore(&port->lock, flags);
+ /* Don't block on a stalled port, just pull the chain */
+ if (tty->flow_stopped)
+ tty_driver_flush_buffer(tty);
+ if (port->flags & ASYNC_INITIALIZED &&
+ port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
+ tty_wait_until_sent(tty, port->closing_wait);
+ return 1;
+}
+EXPORT_SYMBOL(tty_port_close_start);
+
+void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)
+{
+ unsigned long flags;
+
+ tty_ldisc_flush(tty);
+
+ spin_lock_irqsave(&port->lock, flags);
+ tty->closing = 0;
+
+ if (port->blocked_open) {
+ spin_unlock_irqrestore(&port->lock, flags);
+ if (port->close_delay) {
+ msleep_interruptible(
+ jiffies_to_msecs(port->close_delay));
+ }
+ spin_lock_irqsave(&port->lock, flags);
+ wake_up_interruptible(&port->open_wait);
+ }
+ port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
+ wake_up_interruptible(&port->close_wait);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+EXPORT_SYMBOL(tty_port_close_end);
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 3fb0d2c88ba..ff6f5a4b58f 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -138,12 +138,33 @@ int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int))
}
/*
+ * virtio console configuration. This supports:
+ * - console resize
+ */
+static void virtcons_apply_config(struct virtio_device *dev)
+{
+ struct winsize ws;
+
+ if (virtio_has_feature(dev, VIRTIO_CONSOLE_F_SIZE)) {
+ dev->config->get(dev,
+ offsetof(struct virtio_console_config, cols),
+ &ws.ws_col, sizeof(u16));
+ dev->config->get(dev,
+ offsetof(struct virtio_console_config, rows),
+ &ws.ws_row, sizeof(u16));
+ hvc_resize(hvc, ws);
+ }
+}
+
+/*
* we support only one console, the hvc struct is a global var
- * There is no need to do anything
+ * We set the configuration at this point, since we now have a tty
*/
static int notifier_add_vio(struct hvc_struct *hp, int data)
{
hp->irq_requested = 1;
+ virtcons_apply_config(vdev);
+
return 0;
}
@@ -234,11 +255,18 @@ static struct virtio_device_id id_table[] = {
{ 0 },
};
+static unsigned int features[] = {
+ VIRTIO_CONSOLE_F_SIZE,
+};
+
static struct virtio_driver virtio_console = {
+ .feature_table = features,
+ .feature_table_size = ARRAY_SIZE(features),
.driver.name = KBUILD_MODNAME,
.driver.owner = THIS_MODULE,
.id_table = id_table,
.probe = virtcons_probe,
+ .config_changed = virtcons_apply_config,
};
static int __init init(void)
diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c
index 1718b3c481d..0e8234bd0e1 100644
--- a/drivers/char/vme_scc.c
+++ b/drivers/char/vme_scc.c
@@ -69,7 +69,7 @@ static void scc_disable_tx_interrupts(void * ptr);
static void scc_enable_tx_interrupts(void * ptr);
static void scc_disable_rx_interrupts(void * ptr);
static void scc_enable_rx_interrupts(void * ptr);
-static int scc_get_CD(void * ptr);
+static int scc_carrier_raised(struct tty_port *port);
static void scc_shutdown_port(void * ptr);
static int scc_set_real_termios(void *ptr);
static void scc_hungup(void *ptr);
@@ -100,7 +100,6 @@ static struct real_driver scc_real_driver = {
scc_enable_tx_interrupts,
scc_disable_rx_interrupts,
scc_enable_rx_interrupts,
- scc_get_CD,
scc_shutdown_port,
scc_set_real_termios,
scc_chars_in_buffer,
@@ -129,6 +128,10 @@ static const struct tty_operations scc_ops = {
.break_ctl = scc_break_ctl,
};
+static const struct tty_port_operations scc_port_ops = {
+ .carrier_raised = scc_carrier_raised,
+};
+
/*----------------------------------------------------------------------------
* vme_scc_init() and support functions
*---------------------------------------------------------------------------*/
@@ -176,6 +179,8 @@ static void scc_init_portstructs(void)
for (i = 0; i < 2; i++) {
port = scc_ports + i;
+ tty_port_init(&port->gs.port);
+ port->gs.port.ops = &scc_port_ops;
port->gs.magic = SCC_MAGIC;
port->gs.close_delay = HZ/2;
port->gs.closing_wait = 30 * HZ;
@@ -624,10 +629,10 @@ static void scc_enable_rx_interrupts(void *ptr)
}
-static int scc_get_CD(void *ptr)
+static int scc_carrier_raised(struct tty_port *port)
{
- struct scc_port *port = ptr;
- unsigned channel = port->channel;
+ struct scc_port *sc = container_of(port, struct scc_port, gs.port);
+ unsigned channel = sc->channel;
return !!(scc_last_status_reg[channel] & SR_DCD);
}
@@ -638,7 +643,7 @@ static void scc_shutdown_port(void *ptr)
struct scc_port *port = ptr;
port->gs.port.flags &= ~ GS_ACTIVE;
- if (port->gs.port.tty && port->gs.port.tty->termios->c_cflag & HUPCL) {
+ if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) {
scc_setsignals (port, 0, 0);
}
}
@@ -779,7 +784,7 @@ static void scc_setsignals(struct scc_port *port, int dtr, int rts)
static void scc_send_xchar(struct tty_struct *tty, char ch)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
port->x_char = ch;
if (ch)
@@ -896,7 +901,7 @@ static int scc_open (struct tty_struct * tty, struct file * filp)
return retval;
}
- port->c_dcd = scc_get_CD (port);
+ port->c_dcd = tty_port_carrier_raised(&port->gs.port);
scc_enable_rx_interrupts(port);
@@ -906,7 +911,7 @@ static int scc_open (struct tty_struct * tty, struct file * filp)
static void scc_throttle (struct tty_struct * tty)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
unsigned long flags;
SCC_ACCESS_INIT(port);
@@ -922,7 +927,7 @@ static void scc_throttle (struct tty_struct * tty)
static void scc_unthrottle (struct tty_struct * tty)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
unsigned long flags;
SCC_ACCESS_INIT(port);
@@ -945,7 +950,7 @@ static int scc_ioctl(struct tty_struct *tty, struct file *file,
static int scc_break_ctl(struct tty_struct *tty, int break_state)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
unsigned long flags;
SCC_ACCESS_INIT(port);
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 008176edbd6..7900bd63b36 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -819,8 +819,8 @@ static inline int resize_screen(struct vc_data *vc, int width, int height,
* ctrl_lock of the tty IFF a tty is passed.
*/
-static int vc_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
- struct vc_data *vc, unsigned int cols, unsigned int lines)
+static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
+ unsigned int cols, unsigned int lines)
{
unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0;
unsigned int old_cols, old_rows, old_row_size, old_screen_size;
@@ -932,7 +932,7 @@ static int vc_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
ws.ws_row = vc->vc_rows;
ws.ws_col = vc->vc_cols;
ws.ws_ypixel = vc->vc_scan_lines;
- tty_do_resize(tty, real_tty, &ws);
+ tty_do_resize(tty, &ws);
}
if (CON_IS_VISIBLE(vc))
@@ -954,13 +954,12 @@ static int vc_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows)
{
- return vc_do_resize(vc->vc_tty, vc->vc_tty, vc, cols, rows);
+ return vc_do_resize(vc->vc_tty, vc, cols, rows);
}
/**
* vt_resize - resize a VT
* @tty: tty to resize
- * @real_tty: tty if a pty/tty pair
* @ws: winsize attributes
*
* Resize a virtual terminal. This is called by the tty layer as we
@@ -970,15 +969,13 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows)
* Takes the console sem and the called methods then take the tty
* termios_mutex and the tty ctrl_lock in that order.
*/
-
-int vt_resize(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize *ws)
+static int vt_resize(struct tty_struct *tty, struct winsize *ws)
{
struct vc_data *vc = tty->driver_data;
int ret;
acquire_console_sem();
- ret = vc_do_resize(tty, real_tty, vc, ws->ws_col, ws->ws_row);
+ ret = vc_do_resize(tty, vc, ws->ws_col, ws->ws_row);
release_console_sem();
return ret;
}
@@ -2679,7 +2676,7 @@ static int con_write_room(struct tty_struct *tty)
{
if (tty->stopped)
return 0;
- return 4096; /* No limit, really; we're not buffering */
+ return 32768; /* No limit, really; we're not buffering */
}
static int con_chars_in_buffer(struct tty_struct *tty)
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 8944ce508e2..a2dee0eb6da 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -366,7 +366,7 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_
int vt_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
- struct vc_data *vc = (struct vc_data *)tty->driver_data;
+ struct vc_data *vc = tty->driver_data;
struct console_font_op op; /* used in multiple places here */
struct kbd_struct * kbd;
unsigned int console;