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-rw-r--r--drivers/char/Kconfig7
-rw-r--r--drivers/char/Makefile1
-rw-r--r--drivers/char/agp/amd64-agp.c28
-rw-r--r--drivers/char/applicom.c11
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c15
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c468
-rw-r--r--drivers/char/ppdev.c4
-rw-r--r--drivers/char/ramoops.c162
-rw-r--r--drivers/char/vt.c10
9 files changed, 478 insertions, 228 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index e21175be25d..f09fc0e2062 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -1121,5 +1121,12 @@ config DEVPORT
source "drivers/s390/char/Kconfig"
+config RAMOOPS
+ tristate "Log panic/oops to a RAM buffer"
+ default n
+ help
+ This enables panic and oops messages to be logged to a circular
+ buffer in RAM where it can be read back at some later point.
+
endmenu
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index d39be4cf1f5..88d6eac6975 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -108,6 +108,7 @@ obj-$(CONFIG_HANGCHECK_TIMER) += hangcheck-timer.o
obj-$(CONFIG_TCG_TPM) += tpm/
obj-$(CONFIG_PS3_FLASH) += ps3flash.o
+obj-$(CONFIG_RAMOOPS) += ramoops.o
obj-$(CONFIG_JS_RTC) += js-rtc.o
js-rtc-y = rtc.o
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 67ea3a60de7..70312da4c96 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -384,7 +384,7 @@ static int __devinit uli_agp_init(struct pci_dev *pdev)
{
u32 httfea,baseaddr,enuscr;
struct pci_dev *dev1;
- int i;
+ int i, ret;
unsigned size = amd64_fetch_size();
dev_info(&pdev->dev, "setting up ULi AGP\n");
@@ -400,15 +400,18 @@ static int __devinit uli_agp_init(struct pci_dev *pdev)
if (i == ARRAY_SIZE(uli_sizes)) {
dev_info(&pdev->dev, "no ULi size found for %d\n", size);
- return -ENODEV;
+ ret = -ENODEV;
+ goto put;
}
/* shadow x86-64 registers into ULi registers */
pci_read_config_dword (k8_northbridges[0], AMD64_GARTAPERTUREBASE, &httfea);
/* if x86-64 aperture base is beyond 4G, exit here */
- if ((httfea & 0x7fff) >> (32 - 25))
- return -ENODEV;
+ if ((httfea & 0x7fff) >> (32 - 25)) {
+ ret = -ENODEV;
+ goto put;
+ }
httfea = (httfea& 0x7fff) << 25;
@@ -420,9 +423,10 @@ static int __devinit uli_agp_init(struct pci_dev *pdev)
enuscr= httfea+ (size * 1024 * 1024) - 1;
pci_write_config_dword(dev1, ULI_X86_64_HTT_FEA_REG, httfea);
pci_write_config_dword(dev1, ULI_X86_64_ENU_SCR_REG, enuscr);
-
+ ret = 0;
+put:
pci_dev_put(dev1);
- return 0;
+ return ret;
}
@@ -441,7 +445,7 @@ static int nforce3_agp_init(struct pci_dev *pdev)
{
u32 tmp, apbase, apbar, aplimit;
struct pci_dev *dev1;
- int i;
+ int i, ret;
unsigned size = amd64_fetch_size();
dev_info(&pdev->dev, "setting up Nforce3 AGP\n");
@@ -458,7 +462,8 @@ static int nforce3_agp_init(struct pci_dev *pdev)
if (i == ARRAY_SIZE(nforce3_sizes)) {
dev_info(&pdev->dev, "no NForce3 size found for %d\n", size);
- return -ENODEV;
+ ret = -ENODEV;
+ goto put;
}
pci_read_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, &tmp);
@@ -472,7 +477,8 @@ static int nforce3_agp_init(struct pci_dev *pdev)
/* if x86-64 aperture base is beyond 4G, exit here */
if ( (apbase & 0x7fff) >> (32 - 25) ) {
dev_info(&pdev->dev, "aperture base > 4G\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto put;
}
apbase = (apbase & 0x7fff) << 25;
@@ -488,9 +494,11 @@ static int nforce3_agp_init(struct pci_dev *pdev)
pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE2, apbase);
pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT2, aplimit);
+ ret = 0;
+put:
pci_dev_put(dev1);
- return 0;
+ return ret;
}
static int __devinit agp_amd64_probe(struct pci_dev *pdev,
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
index 63313a33ba5..f4ae0e0fb63 100644
--- a/drivers/char/applicom.c
+++ b/drivers/char/applicom.c
@@ -703,14 +703,9 @@ static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
/* In general, the device is only openable by root anyway, so we're not
particularly concerned that bogus ioctls can flood the console. */
- adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL);
- if (!adgl)
- return -ENOMEM;
-
- if (copy_from_user(adgl, argp, sizeof(struct st_ram_io))) {
- kfree(adgl);
- return -EFAULT;
- }
+ adgl = memdup_user(argp, sizeof(struct st_ram_io));
+ if (IS_ERR(adgl))
+ return PTR_ERR(adgl);
lock_kernel();
IndexCard = adgl->num_card-1;
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index c6ad4234378..4f3f8c9ec26 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2505,12 +2505,11 @@ static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum,
return rv;
}
- printk(KERN_INFO
- "ipmi: Found new BMC (man_id: 0x%6.6x, "
- " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
- bmc->id.manufacturer_id,
- bmc->id.product_id,
- bmc->id.device_id);
+ dev_info(intf->si_dev, "Found new BMC (man_id: 0x%6.6x, "
+ "prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
+ bmc->id.manufacturer_id,
+ bmc->id.product_id,
+ bmc->id.device_id);
}
/*
@@ -4037,8 +4036,8 @@ static void ipmi_request_event(void)
static struct timer_list ipmi_timer;
-/* Call every ~100 ms. */
-#define IPMI_TIMEOUT_TIME 100
+/* Call every ~1000 ms. */
+#define IPMI_TIMEOUT_TIME 1000
/* How many jiffies does it take to get to the timeout time. */
#define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000)
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 47ffe4a90a9..35603dd4e6c 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -107,6 +107,14 @@ enum si_type {
};
static char *si_to_str[] = { "kcs", "smic", "bt" };
+enum ipmi_addr_src {
+ SI_INVALID = 0, SI_HOTMOD, SI_HARDCODED, SI_SPMI, SI_ACPI, SI_SMBIOS,
+ SI_PCI, SI_DEVICETREE, SI_DEFAULT
+};
+static char *ipmi_addr_src_to_str[] = { NULL, "hotmod", "hardcoded", "SPMI",
+ "ACPI", "SMBIOS", "PCI",
+ "device-tree", "default" };
+
#define DEVICE_NAME "ipmi_si"
static struct platform_driver ipmi_driver = {
@@ -188,7 +196,7 @@ struct smi_info {
int (*irq_setup)(struct smi_info *info);
void (*irq_cleanup)(struct smi_info *info);
unsigned int io_size;
- char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */
+ enum ipmi_addr_src addr_source; /* ACPI, PCI, SMBIOS, hardcode, etc. */
void (*addr_source_cleanup)(struct smi_info *info);
void *addr_source_data;
@@ -300,6 +308,7 @@ static int num_max_busy_us;
static int unload_when_empty = 1;
+static int add_smi(struct smi_info *smi);
static int try_smi_init(struct smi_info *smi);
static void cleanup_one_si(struct smi_info *to_clean);
@@ -314,9 +323,14 @@ static void deliver_recv_msg(struct smi_info *smi_info,
{
/* Deliver the message to the upper layer with the lock
released. */
- spin_unlock(&(smi_info->si_lock));
- ipmi_smi_msg_received(smi_info->intf, msg);
- spin_lock(&(smi_info->si_lock));
+
+ if (smi_info->run_to_completion) {
+ ipmi_smi_msg_received(smi_info->intf, msg);
+ } else {
+ spin_unlock(&(smi_info->si_lock));
+ ipmi_smi_msg_received(smi_info->intf, msg);
+ spin_lock(&(smi_info->si_lock));
+ }
}
static void return_hosed_msg(struct smi_info *smi_info, int cCode)
@@ -445,6 +459,9 @@ static inline void disable_si_irq(struct smi_info *smi_info)
if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
start_disable_irq(smi_info);
smi_info->interrupt_disabled = 1;
+ if (!atomic_read(&smi_info->stop_operation))
+ mod_timer(&smi_info->si_timer,
+ jiffies + SI_TIMEOUT_JIFFIES);
}
}
@@ -576,9 +593,8 @@ static void handle_transaction_done(struct smi_info *smi_info)
smi_info->handlers->get_result(smi_info->si_sm, msg, 3);
if (msg[2] != 0) {
/* Error clearing flags */
- printk(KERN_WARNING
- "ipmi_si: Error clearing flags: %2.2x\n",
- msg[2]);
+ dev_warn(smi_info->dev,
+ "Error clearing flags: %2.2x\n", msg[2]);
}
if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ)
start_enable_irq(smi_info);
@@ -670,9 +686,8 @@ static void handle_transaction_done(struct smi_info *smi_info)
/* We got the flags from the SMI, now handle them. */
smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
if (msg[2] != 0) {
- printk(KERN_WARNING
- "ipmi_si: Could not enable interrupts"
- ", failed get, using polled mode.\n");
+ dev_warn(smi_info->dev, "Could not enable interrupts"
+ ", failed get, using polled mode.\n");
smi_info->si_state = SI_NORMAL;
} else {
msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
@@ -693,11 +708,11 @@ static void handle_transaction_done(struct smi_info *smi_info)
/* We got the flags from the SMI, now handle them. */
smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
- if (msg[2] != 0) {
- printk(KERN_WARNING
- "ipmi_si: Could not enable interrupts"
- ", failed set, using polled mode.\n");
- }
+ if (msg[2] != 0)
+ dev_warn(smi_info->dev, "Could not enable interrupts"
+ ", failed set, using polled mode.\n");
+ else
+ smi_info->interrupt_disabled = 0;
smi_info->si_state = SI_NORMAL;
break;
}
@@ -709,9 +724,8 @@ static void handle_transaction_done(struct smi_info *smi_info)
/* We got the flags from the SMI, now handle them. */
smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
if (msg[2] != 0) {
- printk(KERN_WARNING
- "ipmi_si: Could not disable interrupts"
- ", failed get.\n");
+ dev_warn(smi_info->dev, "Could not disable interrupts"
+ ", failed get.\n");
smi_info->si_state = SI_NORMAL;
} else {
msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
@@ -733,9 +747,8 @@ static void handle_transaction_done(struct smi_info *smi_info)
/* We got the flags from the SMI, now handle them. */
smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
if (msg[2] != 0) {
- printk(KERN_WARNING
- "ipmi_si: Could not disable interrupts"
- ", failed set.\n");
+ dev_warn(smi_info->dev, "Could not disable interrupts"
+ ", failed set.\n");
}
smi_info->si_state = SI_NORMAL;
break;
@@ -877,6 +890,11 @@ static void sender(void *send_info,
printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
+ mod_timer(&smi_info->si_timer, jiffies + SI_TIMEOUT_JIFFIES);
+
+ if (smi_info->thread)
+ wake_up_process(smi_info->thread);
+
if (smi_info->run_to_completion) {
/*
* If we are running to completion, then throw it in
@@ -997,6 +1015,8 @@ static int ipmi_thread(void *data)
; /* do nothing */
else if (smi_result == SI_SM_CALL_WITH_DELAY && busy_wait)
schedule();
+ else if (smi_result == SI_SM_IDLE)
+ schedule_timeout_interruptible(100);
else
schedule_timeout_interruptible(0);
}
@@ -1039,6 +1059,7 @@ static void smi_timeout(unsigned long data)
unsigned long flags;
unsigned long jiffies_now;
long time_diff;
+ long timeout;
#ifdef DEBUG_TIMING
struct timeval t;
#endif
@@ -1059,9 +1080,9 @@ static void smi_timeout(unsigned long data)
if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
/* Running with interrupts, only do long timeouts. */
- smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES;
+ timeout = jiffies + SI_TIMEOUT_JIFFIES;
smi_inc_stat(smi_info, long_timeouts);
- goto do_add_timer;
+ goto do_mod_timer;
}
/*
@@ -1070,14 +1091,15 @@ static void smi_timeout(unsigned long data)
*/
if (smi_result == SI_SM_CALL_WITH_DELAY) {
smi_inc_stat(smi_info, short_timeouts);
- smi_info->si_timer.expires = jiffies + 1;
+ timeout = jiffies + 1;
} else {
smi_inc_stat(smi_info, long_timeouts);
- smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES;
+ timeout = jiffies + SI_TIMEOUT_JIFFIES;
}
- do_add_timer:
- add_timer(&(smi_info->si_timer));
+ do_mod_timer:
+ if (smi_result != SI_SM_IDLE)
+ mod_timer(&(smi_info->si_timer), timeout);
}
static irqreturn_t si_irq_handler(int irq, void *data)
@@ -1144,10 +1166,10 @@ static int smi_start_processing(void *send_info,
new_smi->thread = kthread_run(ipmi_thread, new_smi,
"kipmi%d", new_smi->intf_num);
if (IS_ERR(new_smi->thread)) {
- printk(KERN_NOTICE "ipmi_si_intf: Could not start"
- " kernel thread due to error %ld, only using"
- " timers to drive the interface\n",
- PTR_ERR(new_smi->thread));
+ dev_notice(new_smi->dev, "Could not start"
+ " kernel thread due to error %ld, only using"
+ " timers to drive the interface\n",
+ PTR_ERR(new_smi->thread));
new_smi->thread = NULL;
}
}
@@ -1308,14 +1330,13 @@ static int std_irq_setup(struct smi_info *info)
DEVICE_NAME,
info);
if (rv) {
- printk(KERN_WARNING
- "ipmi_si: %s unable to claim interrupt %d,"
- " running polled\n",
- DEVICE_NAME, info->irq);
+ dev_warn(info->dev, "%s unable to claim interrupt %d,"
+ " running polled\n",
+ DEVICE_NAME, info->irq);
info->irq = 0;
} else {
info->irq_cleanup = std_irq_cleanup;
- printk(" Using irq %d\n", info->irq);
+ dev_info(info->dev, "Using irq %d\n", info->irq);
}
return rv;
@@ -1406,8 +1427,8 @@ static int port_setup(struct smi_info *info)
info->io.outputb = port_outl;
break;
default:
- printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n",
- info->io.regsize);
+ dev_warn(info->dev, "Invalid register size: %d\n",
+ info->io.regsize);
return -EINVAL;
}
@@ -1529,8 +1550,8 @@ static int mem_setup(struct smi_info *info)
break;
#endif
default:
- printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n",
- info->io.regsize);
+ dev_warn(info->dev, "Invalid register size: %d\n",
+ info->io.regsize);
return -EINVAL;
}
@@ -1755,7 +1776,7 @@ static int hotmod_handler(const char *val, struct kernel_param *kp)
goto out;
}
- info->addr_source = "hotmod";
+ info->addr_source = SI_HOTMOD;
info->si_type = si_type;
info->io.addr_data = addr;
info->io.addr_type = addr_space;
@@ -1777,7 +1798,9 @@ static int hotmod_handler(const char *val, struct kernel_param *kp)
info->irq_setup = std_irq_setup;
info->slave_addr = ipmb;
- try_smi_init(info);
+ if (!add_smi(info))
+ if (try_smi_init(info))
+ cleanup_one_si(info);
} else {
/* remove */
struct smi_info *e, *tmp_e;
@@ -1813,7 +1836,8 @@ static __devinit void hardcode_find_bmc(void)
if (!info)
return;
- info->addr_source = "hardcoded";
+ info->addr_source = SI_HARDCODED;
+ printk(KERN_INFO PFX "probing via hardcoded address\n");
if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) {
info->si_type = SI_KCS;
@@ -1822,8 +1846,7 @@ static __devinit void hardcode_find_bmc(void)
} else if (strcmp(si_type[i], "bt") == 0) {
info->si_type = SI_BT;
} else {
- printk(KERN_WARNING
- "ipmi_si: Interface type specified "
+ printk(KERN_WARNING PFX "Interface type specified "
"for interface %d, was invalid: %s\n",
i, si_type[i]);
kfree(info);
@@ -1841,11 +1864,9 @@ static __devinit void hardcode_find_bmc(void)
info->io.addr_data = addrs[i];
info->io.addr_type = IPMI_MEM_ADDR_SPACE;
} else {
- printk(KERN_WARNING
- "ipmi_si: Interface type specified "
- "for interface %d, "
- "but port and address were not set or "
- "set to zero.\n", i);
+ printk(KERN_WARNING PFX "Interface type specified "
+ "for interface %d, but port and address were "
+ "not set or set to zero.\n", i);
kfree(info);
continue;
}
@@ -1863,7 +1884,9 @@ static __devinit void hardcode_find_bmc(void)
info->irq_setup = std_irq_setup;
info->slave_addr = slave_addrs[i];
- try_smi_init(info);
+ if (!add_smi(info))
+ if (try_smi_init(info))
+ cleanup_one_si(info);
}
}
@@ -1923,15 +1946,13 @@ static int acpi_gpe_irq_setup(struct smi_info *info)
&ipmi_acpi_gpe,
info);
if (status != AE_OK) {
- printk(KERN_WARNING
- "ipmi_si: %s unable to claim ACPI GPE %d,"
- " running polled\n",
- DEVICE_NAME, info->irq);
+ dev_warn(info->dev, "%s unable to claim ACPI GPE %d,"
+ " running polled\n", DEVICE_NAME, info->irq);
info->irq = 0;
return -EINVAL;
} else {
info->irq_cleanup = acpi_gpe_irq_cleanup;
- printk(" Using ACPI GPE %d\n", info->irq);
+ dev_info(info->dev, "Using ACPI GPE %d\n", info->irq);
return 0;
}
}
@@ -1989,8 +2010,8 @@ static __devinit int try_init_spmi(struct SPMITable *spmi)
u8 addr_space;
if (spmi->IPMIlegacy != 1) {
- printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy);
- return -ENODEV;
+ printk(KERN_INFO PFX "Bad SPMI legacy %d\n", spmi->IPMIlegacy);
+ return -ENODEV;
}
if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
@@ -2000,11 +2021,12 @@ static __devinit int try_init_spmi(struct SPMITable *spmi)
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info) {
- printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n");
+ printk(KERN_ERR PFX "Could not allocate SI data (3)\n");
return -ENOMEM;
}
- info->addr_source = "SPMI";
+ info->addr_source = SI_SPMI;
+ printk(KERN_INFO PFX "probing via SPMI\n");
/* Figure out the interface type. */
switch (spmi->InterfaceType) {
@@ -2018,8 +2040,8 @@ static __devinit int try_init_spmi(struct SPMITable *spmi)
info->si_type = SI_BT;
break;
default:
- printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n",
- spmi->InterfaceType);
+ printk(KERN_INFO PFX "Unknown ACPI/SPMI SI type %d\n",
+ spmi->InterfaceType);
kfree(info);
return -EIO;
}
@@ -2055,13 +2077,12 @@ static __devinit int try_init_spmi(struct SPMITable *spmi)
info->io.addr_type = IPMI_IO_ADDR_SPACE;
} else {
kfree(info);
- printk(KERN_WARNING
- "ipmi_si: Unknown ACPI I/O Address type\n");
+ printk(KERN_WARNING PFX "Unknown ACPI I/O Address type\n");
return -EIO;
}
info->io.addr_data = spmi->addr.address;
- try_smi_init(info);
+ add_smi(info);
return 0;
}
@@ -2093,6 +2114,7 @@ static int __devinit ipmi_pnp_probe(struct pnp_dev *dev,
{
struct acpi_device *acpi_dev;
struct smi_info *info;
+ struct resource *res;
acpi_handle handle;
acpi_status status;
unsigned long long tmp;
@@ -2105,7 +2127,8 @@ static int __devinit ipmi_pnp_probe(struct pnp_dev *dev,
if (!info)
return -ENOMEM;
- info->addr_source = "ACPI";
+ info->addr_source = SI_ACPI;
+ printk(KERN_INFO PFX "probing via ACPI\n");
handle = acpi_dev->handle;
@@ -2125,22 +2148,26 @@ static int __devinit ipmi_pnp_probe(struct pnp_dev *dev,
info->si_type = SI_BT;
break;
default:
- dev_info(&dev->dev, "unknown interface type %lld\n", tmp);
+ dev_info(&dev->dev, "unknown IPMI type %lld\n", tmp);
goto err_free;
}
- if (pnp_port_valid(dev, 0)) {
+ res = pnp_get_resource(dev, IORESOURCE_IO, 0);
+ if (res) {
info->io_setup = port_setup;
info->io.addr_type = IPMI_IO_ADDR_SPACE;
- info->io.addr_data = pnp_port_start(dev, 0);
- } else if (pnp_mem_valid(dev, 0)) {
- info->io_setup = mem_setup;
- info->io.addr_type = IPMI_MEM_ADDR_SPACE;
- info->io.addr_data = pnp_mem_start(dev, 0);
} else {
+ res = pnp_get_resource(dev, IORESOURCE_MEM, 0);
+ if (res) {
+ info->io_setup = mem_setup;
+ info->io.addr_type = IPMI_MEM_ADDR_SPACE;
+ }
+ }
+ if (!res) {
dev_err(&dev->dev, "no I/O or memory address\n");
goto err_free;
}
+ info->io.addr_data = res->start;
info->io.regspacing = DEFAULT_REGSPACING;
info->io.regsize = DEFAULT_REGSPACING;
@@ -2156,10 +2183,14 @@ static int __devinit ipmi_pnp_probe(struct pnp_dev *dev,
info->irq_setup = std_irq_setup;
}
- info->dev = &acpi_dev->dev;
+ info->dev = &dev->dev;
pnp_set_drvdata(dev, info);
- return try_smi_init(info);
+ dev_info(info->dev, "%pR regsize %d spacing %d irq %d\n",
+ res, info->io.regsize, info->io.regspacing,
+ info->irq);
+
+ return add_smi(info);
err_free:
kfree(info);
@@ -2264,12 +2295,12 @@ static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data)
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info) {
- printk(KERN_ERR
- "ipmi_si: Could not allocate SI data\n");
+ printk(KERN_ERR PFX "Could not allocate SI data\n");
return;
}
- info->addr_source = "SMBIOS";
+ info->addr_source = SI_SMBIOS;
+ printk(KERN_INFO PFX "probing via SMBIOS\n");
switch (ipmi_data->type) {
case 0x01: /* KCS */
@@ -2299,8 +2330,7 @@ static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data)
default:
kfree(info);
- printk(KERN_WARNING
- "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n",
+ printk(KERN_WARNING PFX "Unknown SMBIOS I/O Address type: %d\n",
ipmi_data->addr_space);
return;
}
@@ -2318,7 +2348,7 @@ static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data)
if (info->irq)
info->irq_setup = std_irq_setup;
- try_smi_init(info);
+ add_smi(info);
}
static void __devinit dmi_find_bmc(void)
@@ -2368,7 +2398,8 @@ static int __devinit ipmi_pci_probe(struct pci_dev *pdev,
if (!info)
return -ENOMEM;
- info->addr_source = "PCI";
+ info->addr_source = SI_PCI;
+ dev_info(&pdev->dev, "probing via PCI");
switch (class_type) {
case PCI_ERMC_CLASSCODE_TYPE_SMIC:
@@ -2385,15 +2416,13 @@ static int __devinit ipmi_pci_probe(struct pci_dev *pdev,
default:
kfree(info);
- printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n",
- pci_name(pdev), class_type);
+ dev_info(&pdev->dev, "Unknown IPMI type: %d\n", class_type);
return -ENOMEM;
}
rv = pci_enable_device(pdev);
if (rv) {
- printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n",
- pci_name(pdev));
+ dev_err(&pdev->dev, "couldn't enable PCI device\n");
kfree(info);
return rv;
}
@@ -2421,7 +2450,11 @@ static int __devinit ipmi_pci_probe(struct pci_dev *pdev,
info->dev = &pdev->dev;
pci_set_drvdata(pdev, info);
- return try_smi_init(info);
+ dev_info(&pdev->dev, "%pR regsize %d spacing %d irq %d\n",
+ &pdev->resource[0], info->io.regsize, info->io.regspacing,
+ info->irq);
+
+ return add_smi(info);
}
static void __devexit ipmi_pci_remove(struct pci_dev *pdev)
@@ -2473,7 +2506,7 @@ static int __devinit ipmi_of_probe(struct of_device *dev,
int ret;
int proplen;
- dev_info(&dev->dev, PFX "probing via device tree\n");
+ dev_info(&dev->dev, "probing via device tree\n");
ret = of_address_to_resource(np, 0, &resource);
if (ret) {
@@ -2503,12 +2536,12 @@ static int __devinit ipmi_of_probe(struct of_device *dev,
if (!info) {
dev_err(&dev->dev,
- PFX "could not allocate memory for OF probe\n");
+ "could not allocate memory for OF probe\n");
return -ENOMEM;
}
info->si_type = (enum si_type) match->data;
- info->addr_source = "device-tree";
+ info->addr_source = SI_DEVICETREE;
info->irq_setup = std_irq_setup;
if (resource.flags & IORESOURCE_IO) {
@@ -2528,13 +2561,13 @@ static int __devinit ipmi_of_probe(struct of_device *dev,
info->irq = irq_of_parse_and_map(dev->dev.of_node, 0);
info->dev = &dev->dev;
- dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %x\n",
+ dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %d\n",
info->io.addr_data, info->io.regsize, info->io.regspacing,
info->irq);
dev_set_drvdata(&dev->dev, info);
- return try_smi_init(info);
+ return add_smi(info);
}
static int __devexit ipmi_of_remove(struct of_device *dev)
@@ -2643,9 +2676,8 @@ static int try_enable_event_buffer(struct smi_info *smi_info)
rv = wait_for_msg_done(smi_info);
if (rv) {
- printk(KERN_WARNING
- "ipmi_si: Error getting response from get global,"
- " enables command, the event buffer is not"
+ printk(KERN_WARNING PFX "Error getting response from get"
+ " global enables command, the event buffer is not"
" enabled.\n");
goto out;
}
@@ -2657,10 +2689,8 @@ static int try_enable_event_buffer(struct smi_info *smi_info)
resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 ||
resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD ||
resp[2] != 0) {
- printk(KERN_WARNING
- "ipmi_si: Invalid return from get global"
- " enables command, cannot enable the event"
- " buffer.\n");
+ printk(KERN_WARNING PFX "Invalid return from get global"
+ " enables command, cannot enable the event buffer.\n");
rv = -EINVAL;
goto out;
}
@@ -2676,9 +2706,8 @@ static int try_enable_event_buffer(struct smi_info *smi_info)
rv = wait_for_msg_done(smi_info);
if (rv) {
- printk(KERN_WARNING
- "ipmi_si: Error getting response from set global,"
- " enables command, the event buffer is not"
+ printk(KERN_WARNING PFX "Error getting response from set"
+ " global, enables command, the event buffer is not"
" enabled.\n");
goto out;
}
@@ -2689,10 +2718,8 @@ static int try_enable_event_buffer(struct smi_info *smi_info)
if (resp_len < 3 ||
resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 ||
resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) {
- printk(KERN_WARNING
- "ipmi_si: Invalid return from get global,"
- "enables command, not enable the event"
- " buffer.\n");
+ printk(KERN_WARNING PFX "Invalid return from get global,"
+ "enables command, not enable the event buffer.\n");
rv = -EINVAL;
goto out;
}
@@ -2951,7 +2978,7 @@ static __devinit void default_find_bmc(void)
if (!info)
return;
- info->addr_source = NULL;
+ info->addr_source = SI_DEFAULT;
info->si_type = ipmi_defaults[i].type;
info->io_setup = port_setup;
@@ -2963,14 +2990,16 @@ static __devinit void default_find_bmc(void)
info->io.regsize = DEFAULT_REGSPACING;
info->io.regshift = 0;
- if (try_smi_init(info) == 0) {
- /* Found one... */
- printk(KERN_INFO "ipmi_si: Found default %s state"
- " machine at %s address 0x%lx\n",
- si_to_str[info->si_type],
- addr_space_to_str[info->io.addr_type],
- info->io.addr_data);
- return;
+ if (add_smi(info) == 0) {
+ if ((try_smi_init(info)) == 0) {
+ /* Found one... */
+ printk(KERN_INFO PFX "Found default %s"
+ " state machine at %s address 0x%lx\n",
+ si_to_str[info->si_type],
+ addr_space_to_str[info->io.addr_type],
+ info->io.addr_data);
+ } else
+ cleanup_one_si(info);
}
}
}
@@ -2989,34 +3018,48 @@ static int is_new_interface(struct smi_info *info)
return 1;
}
-static int try_smi_init(struct smi_info *new_smi)
+static int add_smi(struct smi_info *new_smi)
{
- int rv;
- int i;
-
- if (new_smi->addr_source) {
- printk(KERN_INFO "ipmi_si: Trying %s-specified %s state"
- " machine at %s address 0x%lx, slave address 0x%x,"
- " irq %d\n",
- new_smi->addr_source,
- si_to_str[new_smi->si_type],
- addr_space_to_str[new_smi->io.addr_type],
- new_smi->io.addr_data,
- new_smi->slave_addr, new_smi->irq);
- }
+ int rv = 0;
+ printk(KERN_INFO PFX "Adding %s-specified %s state machine",
+ ipmi_addr_src_to_str[new_smi->addr_source],
+ si_to_str[new_smi->si_type]);
mutex_lock(&smi_infos_lock);
if (!is_new_interface(new_smi)) {
- printk(KERN_WARNING "ipmi_si: duplicate interface\n");
+ printk(KERN_CONT PFX "duplicate interface\n");
rv = -EBUSY;
goto out_err;
}
+ printk(KERN_CONT "\n");
+
/* So we know not to free it unless we have allocated one. */
new_smi->intf = NULL;
new_smi->si_sm = NULL;
new_smi->handlers = NULL;
+ list_add_tail(&new_smi->link, &smi_infos);
+
+out_err:
+ mutex_unlock(&smi_infos_lock);
+ return rv;
+}
+
+static int try_smi_init(struct smi_info *new_smi)
+{
+ int rv = 0;
+ int i;
+
+ printk(KERN_INFO PFX "Trying %s-specified %s state"
+ " machine at %s address 0x%lx, slave address 0x%x,"
+ " irq %d\n",
+ ipmi_addr_src_to_str[new_smi->addr_source],
+ si_to_str[new_smi->si_type],
+ addr_space_to_str[new_smi->io.addr_type],
+ new_smi->io.addr_data,
+ new_smi->slave_addr, new_smi->irq);
+
switch (new_smi->si_type) {
case SI_KCS:
new_smi->handlers = &kcs_smi_handlers;
@@ -3039,7 +3082,8 @@ static int try_smi_init(struct smi_info *new_smi)
/* Allocate the state machine's data and initialize it. */
new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL);
if (!new_smi->si_sm) {
- printk(KERN_ERR "Could not allocate state machine memory\n");
+ printk(KERN_ERR PFX
+ "Could not allocate state machine memory\n");
rv = -ENOMEM;
goto out_err;
}
@@ -3049,7 +3093,7 @@ static int try_smi_init(struct smi_info *new_smi)
/* Now that we know the I/O size, we can set up the I/O. */
rv = new_smi->io_setup(new_smi);
if (rv) {
- printk(KERN_ERR "Could not set up I/O space\n");
+ printk(KERN_ERR PFX "Could not set up I/O space\n");
goto out_err;
}
@@ -3059,8 +3103,7 @@ static int try_smi_init(struct smi_info *new_smi)
/* Do low-level detection first. */
if (new_smi->handlers->detect(new_smi->si_sm)) {
if (new_smi->addr_source)
- printk(KERN_INFO "ipmi_si: Interface detection"
- " failed\n");
+ printk(KERN_INFO PFX "Interface detection failed\n");
rv = -ENODEV;
goto out_err;
}
@@ -3072,7 +3115,7 @@ static int try_smi_init(struct smi_info *new_smi)
rv = try_get_dev_id(new_smi);
if (rv) {
if (new_smi->addr_source)
- printk(KERN_INFO "ipmi_si: There appears to be no BMC"
+ printk(KERN_INFO PFX "There appears to be no BMC"
" at this location\n");
goto out_err;
}
@@ -3088,7 +3131,7 @@ static int try_smi_init(struct smi_info *new_smi)
for (i = 0; i < SI_NUM_STATS; i++)
atomic_set(&new_smi->stats[i], 0);
- new_smi->interrupt_disabled = 0;
+ new_smi->interrupt_disabled = 1;
atomic_set(&new_smi->stop_operation, 0);
new_smi->intf_num = smi_num;
smi_num++;
@@ -3114,9 +3157,8 @@ static int try_smi_init(struct smi_info *new_smi)
new_smi->pdev = platform_device_alloc("ipmi_si",
new_smi->intf_num);
if (!new_smi->pdev) {
- printk(KERN_ERR
- "ipmi_si_intf:"
- " Unable to allocate platform device\n");
+ printk(KERN_ERR PFX
+ "Unable to allocate platform device\n");
goto out_err;
}
new_smi->dev = &new_smi->pdev->dev;
@@ -3124,9 +3166,8 @@ static int try_smi_init(struct smi_info *new_smi)
rv = platform_device_add(new_smi->pdev);
if (rv) {
- printk(KERN_ERR
- "ipmi_si_intf:"
- " Unable to register system interface device:"
+ printk(KERN_ERR PFX
+ "Unable to register system interface device:"
" %d\n",
rv);
goto out_err;
@@ -3141,9 +3182,8 @@ static int try_smi_init(struct smi_info *new_smi)
"bmc",
new_smi->slave_addr);
if (rv) {
- printk(KERN_ERR
- "ipmi_si: Unable to register device: error %d\n",
- rv);
+ dev_err(new_smi->dev, "Unable to register device: error %d\n",
+ rv);
goto out_err_stop_timer;
}
@@ -3151,9 +3191,7 @@ static int try_smi_init(struct smi_info *new_smi)
type_file_read_proc,
new_smi);
if (rv) {
- printk(KERN_ERR
- "ipmi_si: Unable to create proc entry: %d\n",
- rv);
+ dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv);
goto out_err_stop_timer;
}
@@ -3161,9 +3199,7 @@ static int try_smi_init(struct smi_info *new_smi)
stat_file_read_proc,
new_smi);
if (rv) {
- printk(KERN_ERR
- "ipmi_si: Unable to create proc entry: %d\n",
- rv);
+ dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv);
goto out_err_stop_timer;
}
@@ -3171,18 +3207,12 @@ static int try_smi_init(struct smi_info *new_smi)
param_read_proc,
new_smi);
if (rv) {
- printk(KERN_ERR
- "ipmi_si: Unable to create proc entry: %d\n",
- rv);
+ dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv);
goto out_err_stop_timer;
}
- list_add_tail(&new_smi->link, &smi_infos);
-
- mutex_unlock(&smi_infos_lock);
-
- printk(KERN_INFO "IPMI %s interface initialized\n",
- si_to_str[new_smi->si_type]);
+ dev_info(new_smi->dev, "IPMI %s interface initialized\n",
+ si_to_str[new_smi->si_type]);
return 0;
@@ -3191,11 +3221,17 @@ static int try_smi_init(struct smi_info *new_smi)
wait_for_timer_and_thread(new_smi);
out_err:
- if (new_smi->intf)
+ new_smi->interrupt_disabled = 1;
+
+ if (new_smi->intf) {
ipmi_unregister_smi(new_smi->intf);
+ new_smi->intf = NULL;
+ }
- if (new_smi->irq_cleanup)
+ if (new_smi->irq_cleanup) {
new_smi->irq_cleanup(new_smi);
+ new_smi->irq_cleanup = NULL;
+ }
/*
* Wait until we know that we are out of any interrupt
@@ -3208,18 +3244,21 @@ static int try_smi_init(struct smi_info *new_smi)
if (new_smi->handlers)
new_smi->handlers->cleanup(new_smi->si_sm);
kfree(new_smi->si_sm);
+ new_smi->si_sm = NULL;
}
- if (new_smi->addr_source_cleanup)
+ if (new_smi->addr_source_cleanup) {
new_smi->addr_source_cleanup(new_smi);
- if (new_smi->io_cleanup)
+ new_smi->addr_source_cleanup = NULL;
+ }
+ if (new_smi->io_cleanup) {
new_smi->io_cleanup(new_smi);
+ new_smi->io_cleanup = NULL;
+ }
- if (new_smi->dev_registered)
+ if (new_smi->dev_registered) {
platform_device_unregister(new_smi->pdev);
-
- kfree(new_smi);
-
- mutex_unlock(&smi_infos_lock);
+ new_smi->dev_registered = 0;
+ }
return rv;
}
@@ -3229,6 +3268,8 @@ static __devinit int init_ipmi_si(void)
int i;
char *str;
int rv;
+ struct smi_info *e;
+ enum ipmi_addr_src type = SI_INVALID;
if (initialized)
return 0;
@@ -3237,9 +3278,7 @@ static __devinit int init_ipmi_si(void)
/* Register the device drivers. */
rv = driver_register(&ipmi_driver.driver);
if (rv) {
- printk(KERN_ERR
- "init_ipmi_si: Unable to register driver: %d\n",
- rv);
+ printk(KERN_ERR PFX "Unable to register driver: %d\n", rv);
return rv;
}
@@ -3263,38 +3302,81 @@ static __devinit int init_ipmi_si(void)
hardcode_find_bmc();
-#ifdef CONFIG_DMI
- dmi_find_bmc();
-#endif
+ /* If the user gave us a device, they presumably want us to use it */
+ mutex_lock(&smi_infos_lock);
+ if (!list_empty(&smi_infos)) {
+ mutex_unlock(&smi_infos_lock);
+ return 0;
+ }
+ mutex_unlock(&smi_infos_lock);
-#ifdef CONFIG_ACPI
- spmi_find_bmc();
+#ifdef CONFIG_PCI
+ rv = pci_register_driver(&ipmi_pci_driver);
+ if (rv)
+ printk(KERN_ERR PFX "Unable to register PCI driver: %d\n", rv);
#endif
+
#ifdef CONFIG_ACPI
pnp_register_driver(&ipmi_pnp_driver);
#endif
-#ifdef CONFIG_PCI
- rv = pci_register_driver(&ipmi_pci_driver);
- if (rv)
- printk(KERN_ERR
- "init_ipmi_si: Unable to register PCI driver: %d\n",
- rv);
+#ifdef CONFIG_DMI
+ dmi_find_bmc();
+#endif
+
+#ifdef CONFIG_ACPI
+ spmi_find_bmc();
#endif
#ifdef CONFIG_PPC_OF
of_register_platform_driver(&ipmi_of_platform_driver);
#endif
+ /* We prefer devices with interrupts, but in the case of a machine
+ with multiple BMCs we assume that there will be several instances
+ of a given type so if we succeed in registering a type then also
+ try to register everything else of the same type */
+
+ mutex_lock(&smi_infos_lock);
+ list_for_each_entry(e, &smi_infos, link) {
+ /* Try to register a device if it has an IRQ and we either
+ haven't successfully registered a device yet or this
+ device has the same type as one we successfully registered */
+ if (e->irq && (!type || e->addr_source == type)) {
+ if (!try_smi_init(e)) {
+ type = e->addr_source;
+ }
+ }
+ }
+
+ /* type will only have been set if we successfully registered an si */
+ if (type) {
+ mutex_unlock(&smi_infos_lock);
+ return 0;
+ }
+
+ /* Fall back to the preferred device */
+
+ list_for_each_entry(e, &smi_infos, link) {
+ if (!e->irq && (!type || e->addr_source == type)) {
+ if (!try_smi_init(e)) {
+ type = e->addr_source;
+ }
+ }
+ }
+ mutex_unlock(&smi_infos_lock);
+
+ if (type)
+ return 0;
+
if (si_trydefaults) {
mutex_lock(&smi_infos_lock);
if (list_empty(&smi_infos)) {
/* No BMC was found, try defaults. */
mutex_unlock(&smi_infos_lock);
default_find_bmc();
- } else {
+ } else
mutex_unlock(&smi_infos_lock);
- }
}
mutex_lock(&smi_infos_lock);
@@ -3308,8 +3390,8 @@ static __devinit int init_ipmi_si(void)
of_unregister_platform_driver(&ipmi_of_platform_driver);
#endif
driver_unregister(&ipmi_driver.driver);
- printk(KERN_WARNING
- "ipmi_si: Unable to find any System Interface(s)\n");
+ printk(KERN_WARNING PFX
+ "Unable to find any System Interface(s)\n");
return -ENODEV;
} else {
mutex_unlock(&smi_infos_lock);
@@ -3320,7 +3402,7 @@ module_init(init_ipmi_si);
static void cleanup_one_si(struct smi_info *to_clean)
{
- int rv;
+ int rv = 0;
unsigned long flags;
if (!to_clean)
@@ -3364,14 +3446,16 @@ static void cleanup_one_si(struct smi_info *to_clean)
schedule_timeout_uninterruptible(1);
}
- rv = ipmi_unregister_smi(to_clean->intf);
+ if (to_clean->intf)
+ rv = ipmi_unregister_smi(to_clean->intf);
+
if (rv) {
- printk(KERN_ERR
- "ipmi_si: Unable to unregister device: errno=%d\n",
+ printk(KERN_ERR PFX "Unable to unregister device: errno=%d\n",
rv);
}
- to_clean->handlers->cleanup(to_clean->si_sm);
+ if (to_clean->handlers)
+ to_clean->handlers->cleanup(to_clean->si_sm);
kfree(to_clean->si_sm);
diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c
index fdd37543aa7..02abfddce45 100644
--- a/drivers/char/ppdev.c
+++ b/drivers/char/ppdev.c
@@ -287,12 +287,10 @@ static int register_device (int minor, struct pp_struct *pp)
char *name;
int fl;
- name = kmalloc (strlen (CHRDEV) + 3, GFP_KERNEL);
+ name = kasprintf(GFP_KERNEL, CHRDEV "%x", minor);
if (name == NULL)
return -ENOMEM;
- sprintf (name, CHRDEV "%x", minor);
-
port = parport_find_number (minor);
if (!port) {
printk (KERN_WARNING "%s: no associated port!\n", name);
diff --git a/drivers/char/ramoops.c b/drivers/char/ramoops.c
new file mode 100644
index 00000000000..74f00b5ffa3
--- /dev/null
+++ b/drivers/char/ramoops.c
@@ -0,0 +1,162 @@
+/*
+ * RAM Oops/Panic logger
+ *
+ * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/kmsg_dump.h>
+#include <linux/time.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+
+#define RAMOOPS_KERNMSG_HDR "===="
+#define RAMOOPS_HEADER_SIZE (5 + sizeof(struct timeval))
+
+#define RECORD_SIZE 4096
+
+static ulong mem_address;
+module_param(mem_address, ulong, 0400);
+MODULE_PARM_DESC(mem_address,
+ "start of reserved RAM used to store oops/panic logs");
+
+static ulong mem_size;
+module_param(mem_size, ulong, 0400);
+MODULE_PARM_DESC(mem_size,
+ "size of reserved RAM used to store oops/panic logs");
+
+static int dump_oops = 1;
+module_param(dump_oops, int, 0600);
+MODULE_PARM_DESC(dump_oops,
+ "set to 1 to dump oopses, 0 to only dump panics (default 1)");
+
+static struct ramoops_context {
+ struct kmsg_dumper dump;
+ void *virt_addr;
+ phys_addr_t phys_addr;
+ unsigned long size;
+ int count;
+ int max_count;
+} oops_cxt;
+
+static void ramoops_do_dump(struct kmsg_dumper *dumper,
+ enum kmsg_dump_reason reason, const char *s1, unsigned long l1,
+ const char *s2, unsigned long l2)
+{
+ struct ramoops_context *cxt = container_of(dumper,
+ struct ramoops_context, dump);
+ unsigned long s1_start, s2_start;
+ unsigned long l1_cpy, l2_cpy;
+ int res;
+ char *buf;
+ struct timeval timestamp;
+
+ /* Only dump oopses if dump_oops is set */
+ if (reason == KMSG_DUMP_OOPS && !dump_oops)
+ return;
+
+ buf = (char *)(cxt->virt_addr + (cxt->count * RECORD_SIZE));
+ memset(buf, '\0', RECORD_SIZE);
+ res = sprintf(buf, "%s", RAMOOPS_KERNMSG_HDR);
+ buf += res;
+ do_gettimeofday(&timestamp);
+ res = sprintf(buf, "%lu.%lu\n", (long)timestamp.tv_sec, (long)timestamp.tv_usec);
+ buf += res;
+
+ l2_cpy = min(l2, (unsigned long)(RECORD_SIZE - RAMOOPS_HEADER_SIZE));
+ l1_cpy = min(l1, (unsigned long)(RECORD_SIZE - RAMOOPS_HEADER_SIZE) - l2_cpy);
+
+ s2_start = l2 - l2_cpy;
+ s1_start = l1 - l1_cpy;
+
+ memcpy(buf, s1 + s1_start, l1_cpy);
+ memcpy(buf + l1_cpy, s2 + s2_start, l2_cpy);
+
+ cxt->count = (cxt->count + 1) % cxt->max_count;
+}
+
+static int __init ramoops_init(void)
+{
+ struct ramoops_context *cxt = &oops_cxt;
+ int err = -EINVAL;
+
+ if (!mem_size) {
+ printk(KERN_ERR "ramoops: invalid size specification");
+ goto fail3;
+ }
+
+ rounddown_pow_of_two(mem_size);
+
+ if (mem_size < RECORD_SIZE) {
+ printk(KERN_ERR "ramoops: size too small");
+ goto fail3;
+ }
+
+ cxt->max_count = mem_size / RECORD_SIZE;
+ cxt->count = 0;
+ cxt->size = mem_size;
+ cxt->phys_addr = mem_address;
+
+ if (!request_mem_region(cxt->phys_addr, cxt->size, "ramoops")) {
+ printk(KERN_ERR "ramoops: request mem region failed");
+ err = -EINVAL;
+ goto fail3;
+ }
+
+ cxt->virt_addr = ioremap(cxt->phys_addr, cxt->size);
+ if (!cxt->virt_addr) {
+ printk(KERN_ERR "ramoops: ioremap failed");
+ goto fail2;
+ }
+
+ cxt->dump.dump = ramoops_do_dump;
+ err = kmsg_dump_register(&cxt->dump);
+ if (err) {
+ printk(KERN_ERR "ramoops: registering kmsg dumper failed");
+ goto fail1;
+ }
+
+ return 0;
+
+fail1:
+ iounmap(cxt->virt_addr);
+fail2:
+ release_mem_region(cxt->phys_addr, cxt->size);
+fail3:
+ return err;
+}
+
+static void __exit ramoops_exit(void)
+{
+ struct ramoops_context *cxt = &oops_cxt;
+
+ if (kmsg_dump_unregister(&cxt->dump) < 0)
+ printk(KERN_WARNING "ramoops: could not unregister kmsg_dumper");
+
+ iounmap(cxt->virt_addr);
+ release_mem_region(cxt->phys_addr, cxt->size);
+}
+
+
+module_init(ramoops_init);
+module_exit(ramoops_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marco Stornelli <marco.stornelli@gmail.com>");
+MODULE_DESCRIPTION("RAM Oops/Panic logger/driver");
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index bd1d1164fec..7cdb6ee569c 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -3967,13 +3967,9 @@ static int con_font_set(struct vc_data *vc, struct console_font_op *op)
font.charcount = op->charcount;
font.height = op->height;
font.width = op->width;
- font.data = kmalloc(size, GFP_KERNEL);
- if (!font.data)
- return -ENOMEM;
- if (copy_from_user(font.data, op->data, size)) {
- kfree(font.data);
- return -EFAULT;
- }
+ font.data = memdup_user(op->data, size);
+ if (IS_ERR(font.data))
+ return PTR_ERR(font.data);
acquire_console_sem();
if (vc->vc_sw->con_font_set)
rc = vc->vc_sw->con_font_set(vc, &font, op->flags);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-26 14:19:09 +0000