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authorJeff Dike <jdike@addtoit.com>2006-10-02 02:17:18 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-02 07:57:14 -0700
commitb68e31d0ebbcc909d1941f9f230c9d062a3a13d3 (patch)
treeb32902e5de02081cbb9eca49d7bb0b444e2b4f23
parented97bd37efd8ff7398d3a7eedf4bcbf245f5dad3 (diff)
downloadlinux-2.6.34-ux500-b68e31d0ebbcc909d1941f9f230c9d062a3a13d3.tar.gz
[PATCH] const struct tty_operations
As part of an SMP cleanliness pass over UML, I consted a bunch of structures in order to not have to document their locking. One of these structures was a struct tty_operations. In order to const it in UML without introducing compiler complaints, the declaration of tty_set_operations needs to be changed, and then all of its callers need to be fixed. This patch declares all struct tty_operations in the tree as const. In all cases, they are static and used only as input to tty_set_operations. As an extra check, I ran an i386 allyesconfig build which produced no extra warnings. 53 drivers are affected. I checked the history of a bunch of them, and in most cases, there have been only a handful of maintenance changes in the last six months. serial_core.c was the busiest one that I looked at. Signed-off-by: Jeff Dike <jdike@addtoit.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/alpha/kernel/srmcons.c2
-rw-r--r--arch/ia64/hp/sim/simserial.c2
-rw-r--r--arch/ppc/4xx_io/serial_sicc.c2
-rw-r--r--arch/um/drivers/line.c6
-rw-r--r--arch/um/include/line.h7
-rw-r--r--arch/v850/kernel/memcons.c2
-rw-r--r--arch/v850/kernel/simcons.c2
-rw-r--r--arch/xtensa/platform-iss/console.c2
-rw-r--r--drivers/char/amiserial.c2
-rw-r--r--drivers/char/cyclades.c2
-rw-r--r--drivers/char/epca.c2
-rw-r--r--drivers/char/esp.c2
-rw-r--r--drivers/char/hvc_console.c2
-rw-r--r--drivers/char/hvcs.c2
-rw-r--r--drivers/char/hvsi.c2
-rw-r--r--drivers/char/ip2/ip2main.c2
-rw-r--r--drivers/char/isicom.c2
-rw-r--r--drivers/char/istallion.c2
-rw-r--r--drivers/char/moxa.c2
-rw-r--r--drivers/char/mxser.c2
-rw-r--r--drivers/char/pcmcia/synclink_cs.c2
-rw-r--r--drivers/char/pty.c2
-rw-r--r--drivers/char/rio/rio_linux.c2
-rw-r--r--drivers/char/riscom8.c2
-rw-r--r--drivers/char/rocket.c2
-rw-r--r--drivers/char/ser_a2232.c2
-rw-r--r--drivers/char/serial167.c2
-rw-r--r--drivers/char/specialix.c2
-rw-r--r--drivers/char/stallion.c2
-rw-r--r--drivers/char/sx.c2
-rw-r--r--drivers/char/synclink.c2
-rw-r--r--drivers/char/synclink_gt.c2
-rw-r--r--drivers/char/synclinkmp.c2
-rw-r--r--drivers/char/tty_io.c3
-rw-r--r--drivers/char/viocons.c2
-rw-r--r--drivers/char/vme_scc.c2
-rw-r--r--drivers/char/vt.c2
-rw-r--r--drivers/isdn/capi/capi.c2
-rw-r--r--drivers/isdn/gigaset/interface.c2
-rw-r--r--drivers/isdn/i4l/isdn_tty.c2
-rw-r--r--drivers/s390/char/con3215.c2
-rw-r--r--drivers/s390/char/sclp_tty.c2
-rw-r--r--drivers/s390/char/sclp_vt220.c2
-rw-r--r--drivers/s390/char/tty3270.c2
-rw-r--r--drivers/sbus/char/aurora.c2
-rw-r--r--drivers/serial/68328serial.c2
-rw-r--r--drivers/serial/68360serial.c2
-rw-r--r--drivers/serial/crisv10.c2
-rw-r--r--drivers/serial/mcfserial.c2
-rw-r--r--drivers/serial/serial_core.c2
-rw-r--r--drivers/tc/zs.c2
-rw-r--r--drivers/usb/class/cdc-acm.c2
-rw-r--r--drivers/usb/gadget/serial.c2
-rw-r--r--drivers/usb/serial/usb-serial.c2
-rw-r--r--include/linux/tty_driver.h3
-rw-r--r--net/bluetooth/rfcomm/tty.c2
-rw-r--r--net/irda/ircomm/ircomm_tty.c2
57 files changed, 63 insertions, 62 deletions
diff --git a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
index 9d7dff27f81..75692320386 100644
--- a/arch/alpha/kernel/srmcons.c
+++ b/arch/alpha/kernel/srmcons.c
@@ -229,7 +229,7 @@ srmcons_close(struct tty_struct *tty, struct file *filp)
static struct tty_driver *srmcons_driver;
-static struct tty_operations srmcons_ops = {
+static const struct tty_operations srmcons_ops = {
.open = srmcons_open,
.close = srmcons_close,
.write = srmcons_write,
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index 0daacc20ed3..246eb3d3757 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -940,7 +940,7 @@ static inline void show_serial_version(void)
printk(KERN_INFO " no serial options enabled\n");
}
-static struct tty_operations hp_ops = {
+static const struct tty_operations hp_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,
diff --git a/arch/ppc/4xx_io/serial_sicc.c b/arch/ppc/4xx_io/serial_sicc.c
index b81a367dc27..87fe9a89dba 100644
--- a/arch/ppc/4xx_io/serial_sicc.c
+++ b/arch/ppc/4xx_io/serial_sicc.c
@@ -1720,7 +1720,7 @@ static int siccuart_open(struct tty_struct *tty, struct file *filp)
return 0;
}
-static struct tty_operations sicc_ops = {
+static const struct tty_operations sicc_ops = {
.open = siccuart_open,
.close = siccuart_close,
.write = siccuart_write,
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 563ce7690a1..24747a41378 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -642,9 +642,9 @@ int line_remove(struct line *lines, unsigned int num, int n)
}
struct tty_driver *line_register_devfs(struct lines *set,
- struct line_driver *line_driver,
- struct tty_operations *ops, struct line *lines,
- int nlines)
+ struct line_driver *line_driver,
+ const struct tty_operations *ops,
+ struct line *lines, int nlines)
{
int i;
struct tty_driver *driver = alloc_tty_driver(nlines);
diff --git a/arch/um/include/line.h b/arch/um/include/line.h
index 642c9a0320f..7be24811bb3 100644
--- a/arch/um/include/line.h
+++ b/arch/um/include/line.h
@@ -91,10 +91,9 @@ extern int line_setup_irq(int fd, int input, int output, struct line *line,
void *data);
extern void line_close_chan(struct line *line);
extern struct tty_driver * line_register_devfs(struct lines *set,
- struct line_driver *line_driver,
- struct tty_operations *driver,
- struct line *lines,
- int nlines);
+ struct line_driver *line_driver,
+ const struct tty_operations *driver,
+ struct line *lines, int nlines);
extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
extern void close_lines(struct line *lines, int nlines);
diff --git a/arch/v850/kernel/memcons.c b/arch/v850/kernel/memcons.c
index 815f8a43926..92f514fdcc7 100644
--- a/arch/v850/kernel/memcons.c
+++ b/arch/v850/kernel/memcons.c
@@ -104,7 +104,7 @@ int memcons_tty_chars_in_buffer (struct tty_struct *tty)
return 0;
}
-static struct tty_operations ops = {
+static const struct tty_operations ops = {
.open = memcons_tty_open,
.write = memcons_tty_write,
.write_room = memcons_tty_write_room,
diff --git a/arch/v850/kernel/simcons.c b/arch/v850/kernel/simcons.c
index 3975aa02cef..9973596ae30 100644
--- a/arch/v850/kernel/simcons.c
+++ b/arch/v850/kernel/simcons.c
@@ -77,7 +77,7 @@ int simcons_tty_chars_in_buffer (struct tty_struct *tty)
return 0;
}
-static struct tty_operations ops = {
+static const struct tty_operations ops = {
.open = simcons_tty_open,
.write = simcons_tty_write,
.write_room = simcons_tty_write_room,
diff --git a/arch/xtensa/platform-iss/console.c b/arch/xtensa/platform-iss/console.c
index 22d3c571a7b..5c947cae752 100644
--- a/arch/xtensa/platform-iss/console.c
+++ b/arch/xtensa/platform-iss/console.c
@@ -191,7 +191,7 @@ static int rs_read_proc(char *page, char **start, off_t off, int count,
}
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 9d6713a93ed..d0e92ed0a36 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -1958,7 +1958,7 @@ static void show_serial_version(void)
}
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index c1c67281750..f85b4eb1661 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -5205,7 +5205,7 @@ done:
extra ports are ignored.
*/
-static struct tty_operations cy_ops = {
+static const struct tty_operations cy_ops = {
.open = cy_open,
.close = cy_close,
.write = cy_write,
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index 86d290e9f30..3baa2ab8cbd 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -1125,7 +1125,7 @@ static void __exit epca_module_exit(void)
module_exit(epca_module_exit);
-static struct tty_operations pc_ops = {
+static const struct tty_operations pc_ops = {
.open = pc_open,
.close = pc_close,
.write = pc_write,
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index afcd83d9984..05788c75d7f 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -2376,7 +2376,7 @@ static inline int autoconfig(struct esp_struct * info)
return (port_detected);
}
-static struct tty_operations esp_ops = {
+static const struct tty_operations esp_ops = {
.open = esp_open,
.close = rs_close,
.write = rs_write,
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index a76d2c40dd5..4053d1cd393 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -696,7 +696,7 @@ int khvcd(void *unused)
return 0;
}
-static struct tty_operations hvc_ops = {
+static const struct tty_operations hvc_ops = {
.open = hvc_open,
.close = hvc_close,
.write = hvc_write,
diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 4589ff302b0..0b89bcde8c5 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -1306,7 +1306,7 @@ static int hvcs_chars_in_buffer(struct tty_struct *tty)
return hvcsd->chars_in_buffer;
}
-static struct tty_operations hvcs_ops = {
+static const struct tty_operations hvcs_ops = {
.open = hvcs_open,
.close = hvcs_close,
.hangup = hvcs_hangup,
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index a89a95fb5e4..c07dc58d5c1 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -1130,7 +1130,7 @@ static int hvsi_tiocmset(struct tty_struct *tty, struct file *file,
}
-static struct tty_operations hvsi_ops = {
+static const struct tty_operations hvsi_ops = {
.open = hvsi_open,
.close = hvsi_close,
.write = hvsi_write,
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index 331f447e622..4828bc914ce 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -458,7 +458,7 @@ cleanup_module(void)
}
#endif /* MODULE */
-static struct tty_operations ip2_ops = {
+static const struct tty_operations ip2_ops = {
.open = ip2_open,
.close = ip2_close,
.write = ip2_write,
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 2e1da632aee..ea2bbf80ad3 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -1550,7 +1550,7 @@ static void isicom_unregister_ioregion(struct pci_dev *pdev)
board->base = 0;
}
-static struct tty_operations isicom_ops = {
+static const struct tty_operations isicom_ops = {
.open = isicom_open,
.close = isicom_close,
.write = isicom_write,
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 6b4d82a4565..d6e031542c6 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -4636,7 +4636,7 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un
return rc;
}
-static struct tty_operations stli_ops = {
+static const struct tty_operations stli_ops = {
.open = stli_open,
.close = stli_close,
.write = stli_write,
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index c1a6d3c48da..b401383808c 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -281,7 +281,7 @@ static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *
static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
static void MoxaSetFifo(int port, int enable);
-static struct tty_operations moxa_ops = {
+static const struct tty_operations moxa_ops = {
.open = moxa_open,
.close = moxa_close,
.write = moxa_write,
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 27a65377204..8253fca8efd 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -453,7 +453,7 @@ static int CheckIsMoxaMust(int io)
/* above is modified by Victor Yu. 08-15-2002 */
-static struct tty_operations mxser_ops = {
+static const struct tty_operations mxser_ops = {
.open = mxser_open,
.close = mxser_close,
.write = mxser_write,
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 00f574cbb0d..dd845cbefe9 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -3010,7 +3010,7 @@ static struct pcmcia_driver mgslpc_driver = {
.resume = mgslpc_resume,
};
-static struct tty_operations mgslpc_ops = {
+static const struct tty_operations mgslpc_ops = {
.open = mgslpc_open,
.close = mgslpc_close,
.write = mgslpc_write,
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 34dd4c38110..80d3eedd7f9 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -224,7 +224,7 @@ static void pty_set_termios(struct tty_struct *tty, struct termios *old_termios)
tty->termios->c_cflag |= (CS8 | CREAD);
}
-static struct tty_operations pty_ops = {
+static const struct tty_operations pty_ops = {
.open = pty_open,
.close = pty_close,
.write = pty_write,
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index 3fa80aaf452..202a3b0945b 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -727,7 +727,7 @@ static struct vpd_prom *get_VPD_PROM(struct Host *hp)
return &vpdp;
}
-static struct tty_operations rio_ops = {
+static const struct tty_operations rio_ops = {
.open = riotopen,
.close = gs_close,
.write = gs_write,
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 06b9f78a95d..214d850112f 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -1583,7 +1583,7 @@ static void do_softint(void *private_)
}
}
-static struct tty_operations riscom_ops = {
+static const struct tty_operations riscom_ops = {
.open = rc_open,
.close = rc_close,
.write = rc_write,
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 0ac13188132..bac80056f7e 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -2334,7 +2334,7 @@ static int __init init_ISA(int i)
return (1);
}
-static struct tty_operations rocket_ops = {
+static const struct tty_operations rocket_ops = {
.open = rp_open,
.close = rp_close,
.write = rp_write,
diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
index 510bd3e0e88..65c751d0d64 100644
--- a/drivers/char/ser_a2232.c
+++ b/drivers/char/ser_a2232.c
@@ -661,7 +661,7 @@ static void a2232_init_portstructs(void)
}
}
-static struct tty_operations a2232_ops = {
+static const struct tty_operations a2232_ops = {
.open = a2232_open,
.close = gs_close,
.write = gs_write,
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index 21a710cb4bb..b4ea1266b66 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -2158,7 +2158,7 @@ mvme167_serial_console_setup(int cflag)
rcor >> 5, rbpr);
} /* serial_console_init */
-static struct tty_operations cy_ops = {
+static const struct tty_operations cy_ops = {
.open = cy_open,
.close = cy_close,
.write = cy_write,
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index f52c7c31bad..902c48dca3b 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -2363,7 +2363,7 @@ static void do_softint(void *private_)
func_exit();
}
-static struct tty_operations sx_ops = {
+static const struct tty_operations sx_ops = {
.open = sx_open,
.close = sx_close,
.write = sx_write,
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 3beb2203d24..bd711537ec4 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -2993,7 +2993,7 @@ static int stl_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, uns
return(rc);
}
-static struct tty_operations stl_ops = {
+static const struct tty_operations stl_ops = {
.open = stl_open,
.close = stl_close,
.write = stl_write,
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index e1cd2bc4b1e..57e31e5eaed 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -2226,7 +2226,7 @@ static int probe_si (struct sx_board *board)
return 1;
}
-static struct tty_operations sx_ops = {
+static const struct tty_operations sx_ops = {
.break_ctl = sx_break,
.open = sx_open,
.close = gs_close,
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 78b1b1a2732..244dc308c77 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -4360,7 +4360,7 @@ static struct mgsl_struct* mgsl_allocate_device(void)
} /* end of mgsl_allocate_device()*/
-static struct tty_operations mgsl_ops = {
+static const struct tty_operations mgsl_ops = {
.open = mgsl_open,
.close = mgsl_close,
.write = mgsl_write,
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 78bc85180c8..bdc7cb248b8 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -3441,7 +3441,7 @@ static void __devexit remove_one(struct pci_dev *dev)
{
}
-static struct tty_operations ops = {
+static const struct tty_operations ops = {
.open = open,
.close = close,
.write = write,
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 66f3754fbbd..6eb75dcd796 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -3929,7 +3929,7 @@ void device_init(int adapter_num, struct pci_dev *pdev)
}
}
-static struct tty_operations ops = {
+static const struct tty_operations ops = {
.open = open,
.close = close,
.write = write,
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 333741770f1..e90ea39c7c4 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -3680,7 +3680,8 @@ void put_tty_driver(struct tty_driver *driver)
kfree(driver);
}
-void tty_set_operations(struct tty_driver *driver, struct tty_operations *op)
+void tty_set_operations(struct tty_driver *driver,
+ const struct tty_operations *op)
{
driver->open = op->open;
driver->close = op->close;
diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c
index f3efeaf2826..a362ee9c92d 100644
--- a/drivers/char/viocons.c
+++ b/drivers/char/viocons.c
@@ -1047,7 +1047,7 @@ static int send_open(HvLpIndex remoteLp, void *sem)
0, 0, 0, 0);
}
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
.open = viotty_open,
.close = viotty_close,
.write = viotty_write,
diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c
index bfe5ea948f6..c2ca31eb850 100644
--- a/drivers/char/vme_scc.c
+++ b/drivers/char/vme_scc.c
@@ -113,7 +113,7 @@ static struct real_driver scc_real_driver = {
};
-static struct tty_operations scc_ops = {
+static const struct tty_operations scc_ops = {
.open = scc_open,
.close = gs_close,
.write = gs_write,
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 303956d3456..ec0c070bf15 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2675,7 +2675,7 @@ static int __init con_init(void)
}
console_initcall(con_init);
-static struct tty_operations con_ops = {
+static const struct tty_operations con_ops = {
.open = con_open,
.close = con_close,
.write = con_write,
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 669f76393b5..11844bbfe93 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1298,7 +1298,7 @@ static int capinc_tty_read_proc(char *page, char **start, off_t off,
static struct tty_driver *capinc_tty_driver;
-static struct tty_operations capinc_ops = {
+static const struct tty_operations capinc_ops = {
.open = capinc_tty_open,
.close = capinc_tty_close,
.write = capinc_tty_write,
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index bd2e4267528..596f3aebe2f 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -134,7 +134,7 @@ static int if_tiocmset(struct tty_struct *tty, struct file *file,
static int if_write(struct tty_struct *tty,
const unsigned char *buf, int count);
-static struct tty_operations if_ops = {
+static const struct tty_operations if_ops = {
.open = if_open,
.close = if_close,
.ioctl = if_ioctl,
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 9ab66e8960d..2b91bb07fc7 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1860,7 +1860,7 @@ modem_write_profile(atemu * m)
send_sig(SIGIO, dev->profd, 1);
}
-static struct tty_operations modem_ops = {
+static const struct tty_operations modem_ops = {
.open = isdn_tty_open,
.close = isdn_tty_close,
.write = isdn_tty_write,
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 2fa566fa6da..d7de175d53f 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -1103,7 +1103,7 @@ tty3215_start(struct tty_struct *tty)
}
}
-static struct tty_operations tty3215_ops = {
+static const struct tty_operations tty3215_ops = {
.open = tty3215_open,
.close = tty3215_close,
.write = tty3215_write,
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index f6cf9023039..6f43e04dbef 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -711,7 +711,7 @@ static struct sclp_register sclp_input_event =
.receiver_fn = sclp_tty_receiver
};
-static struct tty_operations sclp_ops = {
+static const struct tty_operations sclp_ops = {
.open = sclp_tty_open,
.close = sclp_tty_close,
.write = sclp_tty_write,
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 54fba6f1718..723bf4191bf 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -655,7 +655,7 @@ __sclp_vt220_init(int early)
return 0;
}
-static struct tty_operations sclp_vt220_ops = {
+static const struct tty_operations sclp_vt220_ops = {
.open = sclp_vt220_open,
.close = sclp_vt220_close,
.write = sclp_vt220_write,
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 06e2eeec847..4717c361160 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -1737,7 +1737,7 @@ tty3270_ioctl(struct tty_struct *tty, struct file *file,
return kbd_ioctl(tp->kbd, file, cmd, arg);
}
-static struct tty_operations tty3270_ops = {
+static const struct tty_operations tty3270_ops = {
.open = tty3270_open,
.close = tty3270_close,
.write = tty3270_write,
diff --git a/drivers/sbus/char/aurora.c b/drivers/sbus/char/aurora.c
index 4fdb2c93221..a305d409154 100644
--- a/drivers/sbus/char/aurora.c
+++ b/drivers/sbus/char/aurora.c
@@ -2187,7 +2187,7 @@ static void do_softint(void *private_)
#endif
}
-static struct tty_operations aurora_ops = {
+static const struct tty_operations aurora_ops = {
.open = aurora_open,
.close = aurora_close,
.write = aurora_write,
diff --git a/drivers/serial/68328serial.c b/drivers/serial/68328serial.c
index 993a702422e..bac853c5abb 100644
--- a/drivers/serial/68328serial.c
+++ b/drivers/serial/68328serial.c
@@ -1378,7 +1378,7 @@ void startup_console(void)
#endif /* CONFIG_PM_LEGACY */
-static struct tty_operations rs_ops = {
+static const struct tty_operations rs_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,
diff --git a/drivers/serial/68360serial.c b/drivers/serial/68360serial.c
index e80e70e9b12..1b299e8c57c 100644
--- a/drivers/serial/68360serial.c
+++ b/drivers/serial/68360serial.c
@@ -2424,7 +2424,7 @@ long console_360_init(long kmem_start, long kmem_end)
*/
static int baud_idx;
-static struct tty_operations rs_360_ops = {
+static const struct tty_operations rs_360_ops = {
.owner = THIS_MODULE,
.open = rs_360_open,
.close = rs_360_close,
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index cabd048c863..9851d9eff02 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -4825,7 +4825,7 @@ show_serial_version(void)
/* rs_init inits the driver at boot (using the module_init chain) */
-static struct tty_operations rs_ops = {
+static const struct tty_operations rs_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,
diff --git a/drivers/serial/mcfserial.c b/drivers/serial/mcfserial.c
index 832abd3c470..00d7859c167 100644
--- a/drivers/serial/mcfserial.c
+++ b/drivers/serial/mcfserial.c
@@ -1666,7 +1666,7 @@ static void show_serial_version(void)
printk(mcfrs_drivername);
}
-static struct tty_operations mcfrs_ops = {
+static const struct tty_operations mcfrs_ops = {
.open = mcfrs_open,
.close = mcfrs_close,
.write = mcfrs_write,
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 5f7ba1adb30..de5e8930a6f 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -2111,7 +2111,7 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state,
}
}
-static struct tty_operations uart_ops = {
+static const struct tty_operations uart_ops = {
.open = uart_open,
.close = uart_close,
.write = uart_write,
diff --git a/drivers/tc/zs.c b/drivers/tc/zs.c
index 5e8a27620f6..622881f2676 100644
--- a/drivers/tc/zs.c
+++ b/drivers/tc/zs.c
@@ -1701,7 +1701,7 @@ static void __init probe_sccs(void)
spin_unlock_irqrestore(&zs_lock, flags);
}
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index ca90326f2f5..71288295df2 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1120,7 +1120,7 @@ static struct usb_driver acm_driver = {
* TTY driver structures.
*/
-static struct tty_operations acm_ops = {
+static const struct tty_operations acm_ops = {
.open = acm_tty_open,
.close = acm_tty_close,
.write = acm_tty_write,
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index b893e3118e1..489a85e58bc 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -271,7 +271,7 @@ static unsigned int use_acm = GS_DEFAULT_USE_ACM;
/* tty driver struct */
-static struct tty_operations gs_tty_ops = {
+static const struct tty_operations gs_tty_ops = {
.open = gs_open,
.close = gs_close,
.write = gs_write,
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 0222d92842b..8006e51c34b 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1015,7 +1015,7 @@ void usb_serial_disconnect(struct usb_interface *interface)
dev_info(dev, "device disconnected\n");
}
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
.open = serial_open,
.close = serial_close,
.write = serial_write,
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 58c961c9e17..5c8473bb688 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -219,7 +219,8 @@ extern struct list_head tty_drivers;
struct tty_driver *alloc_tty_driver(int lines);
void put_tty_driver(struct tty_driver *driver);
-void tty_set_operations(struct tty_driver *driver, struct tty_operations *op);
+void tty_set_operations(struct tty_driver *driver,
+ const struct tty_operations *op);
/* tty driver magic number */
#define TTY_DRIVER_MAGIC 0x5402
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index 26f322737db..1958ad1b854 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -1011,7 +1011,7 @@ static int rfcomm_tty_tiocmset(struct tty_struct *tty, struct file *filp, unsign
/* ---- TTY structure ---- */
-static struct tty_operations rfcomm_ops = {
+static const struct tty_operations rfcomm_ops = {
.open = rfcomm_tty_open,
.close = rfcomm_tty_close,
.write = rfcomm_tty_write,
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index 3bcdb467efc..d50a02030ad 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -79,7 +79,7 @@ static struct tty_driver *driver;
hashbin_t *ircomm_tty = NULL;
-static struct tty_operations ops = {
+static const struct tty_operations ops = {
.open = ircomm_tty_open,
.close = ircomm_tty_close,
.write = ircomm_tty_write,