diff options
| author | Ingo Molnar <mingo@kernel.org> | 2016-02-17 10:37:36 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-17 10:37:36 +0100 |
| commit | 9109dc97b0155e500cdf3bcd91507bc24defefc1 (patch) | |
| tree | 5d721cbfeb3576dc6969093ab04f17666737b6a4 /drivers/tty/tty_mutex.c | |
| parent | 27f6d22b037b2be6685e0e27cce929779d634119 (diff) | |
| parent | 059fcd8cd16622da6513804a7a3e826d152c6c96 (diff) | |
Merge branch 'perf/urgent' into perf/core, to queue up dependent patch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/tty/tty_mutex.c')
| -rw-r--r-- | drivers/tty/tty_mutex.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c index d2f3c4cd697f5..dfa9ec03fa8e0 100644 --- a/drivers/tty/tty_mutex.c +++ b/drivers/tty/tty_mutex.c @@ -21,10 +21,15 @@ EXPORT_SYMBOL(tty_lock); int tty_lock_interruptible(struct tty_struct *tty) { + int ret; + if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty)) return -EIO; tty_kref_get(tty); - return mutex_lock_interruptible(&tty->legacy_mutex); + ret = mutex_lock_interruptible(&tty->legacy_mutex); + if (ret) + tty_kref_put(tty); + return ret; } void __lockfunc tty_unlock(struct tty_struct *tty) |