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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-26 15:11:09 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-26 15:11:09 +0200
commitefb8d21b2c6db3497655cc6a033ae8a9883e4063 (patch)
treea14a0dbb9fec3a6db5e542ba7ed4a49681706420 /drivers/tty/tty_mutex.c
parent3cb603284b3d256ae9ae9e65887cee8416bfef15 (diff)
parentd208a3bf77f902283894f546b6b5383202cf7882 (diff)
Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
* 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (79 commits) TTY: serial_core: Fix crash if DCD drop during suspend tty/serial: atmel_serial: bootconsole removed from auto-enumerates Revert "TTY: call tty_driver_lookup_tty unconditionally" tty/serial: atmel_serial: add device tree support tty/serial: atmel_serial: auto-enumerate ports tty/serial: atmel_serial: whitespace and braces modifications tty/serial: atmel_serial: change platform_data variable name tty/serial: RS485 bindings for device tree TTY: call tty_driver_lookup_tty unconditionally TTY: pty, release tty in all ptmx_open fail paths TTY: make tty_add_file non-failing TTY: drop driver reference in tty_open fail path 8250_pci: Fix kernel panic when pch_uart is disabled h8300: drivers/serial/Kconfig was moved parport_pc: release IO region properly if unsupported ITE887x card is found tty: Support compat_ioctl get/set termios_locked hvc_console: display printk messages on console. TTY: snyclinkmp: forever loop in tx_load_dma_buffer() tty/n_gsm: avoid fifo overflow in gsm_dlci_data_output tty/n_gsm: fix a bug in gsm_dlci_data_output (adaption = 2 case) ... Fix up Conflicts in: - drivers/tty/serial/8250_pci.c Trivial conflict with removed duplicate device ID - drivers/tty/serial/atmel_serial.c Annoying silly conflict between "specify the port num via platform_data" and other changes to atmel_console_init
Diffstat (limited to 'drivers/tty/tty_mutex.c')
-rw-r--r--drivers/tty/tty_mutex.c12
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c
index 3b2bb771944..9ff986c32a2 100644
--- a/drivers/tty/tty_mutex.c
+++ b/drivers/tty/tty_mutex.c
@@ -15,30 +15,18 @@
* Don't use in new code.
*/
static DEFINE_MUTEX(big_tty_mutex);
-struct task_struct *__big_tty_mutex_owner;
-EXPORT_SYMBOL_GPL(__big_tty_mutex_owner);
/*
* Getting the big tty mutex.
*/
void __lockfunc tty_lock(void)
{
- struct task_struct *task = current;
-
- WARN_ON(__big_tty_mutex_owner == task);
-
mutex_lock(&big_tty_mutex);
- __big_tty_mutex_owner = task;
}
EXPORT_SYMBOL(tty_lock);
void __lockfunc tty_unlock(void)
{
- struct task_struct *task = current;
-
- WARN_ON(__big_tty_mutex_owner != task);
- __big_tty_mutex_owner = NULL;
-
mutex_unlock(&big_tty_mutex);
}
EXPORT_SYMBOL(tty_unlock);