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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-03-23 09:18:27 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-03-23 09:18:27 -0700 |
| commit | 188933ac139a6f8ab06cad369bd0200af947b00d (patch) | |
| tree | c4c107528fcf6b82e32a93b0596e13eea7aa9385 /drivers/tty/tty_mutex.c | |
| parent | 4ed0e032c3cf27c6fabc154164d003c4e0ac4654 (diff) | |
| parent | bc465aa9d045feb0e13b4a8f32cc33c1943f62d6 (diff) | |
Merge tag 'v4.0-rc5' into next
Merge with the latest upstream to synchronize Synaptics changes
and bring in new infrastructure pieces.
Conflicts:
drivers/input/mouse/synaptics.c
Diffstat (limited to 'drivers/tty/tty_mutex.c')
| -rw-r--r-- | drivers/tty/tty_mutex.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c index 4486741190c4..0efcf713b756 100644 --- a/drivers/tty/tty_mutex.c +++ b/drivers/tty/tty_mutex.c @@ -4,18 +4,8 @@ #include <linux/semaphore.h> #include <linux/sched.h> -/* - * Nested tty locks are necessary for releasing pty pairs. - * The stable lock order is master pty first, then slave pty. - */ - /* Legacy tty mutex glue */ -enum { - TTY_MUTEX_NORMAL, - TTY_MUTEX_SLAVE, -}; - /* * Getting the big tty mutex. */ @@ -46,12 +36,8 @@ EXPORT_SYMBOL(tty_unlock); void __lockfunc tty_lock_slave(struct tty_struct *tty) { - if (tty && tty != tty->link) { - WARN_ON(!mutex_is_locked(&tty->link->legacy_mutex) || - !tty->driver->type == TTY_DRIVER_TYPE_PTY || - !tty->driver->type == PTY_TYPE_SLAVE); + if (tty && tty != tty->link) tty_lock(tty); - } } void __lockfunc tty_unlock_slave(struct tty_struct *tty) @@ -62,5 +48,5 @@ void __lockfunc tty_unlock_slave(struct tty_struct *tty) void tty_set_lock_subclass(struct tty_struct *tty) { - lockdep_set_subclass(&tty->legacy_mutex, TTY_MUTEX_SLAVE); + lockdep_set_subclass(&tty->legacy_mutex, TTY_LOCK_SLAVE); } |