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| author | Ingo Molnar <mingo@kernel.org> | 2016-02-29 09:55:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-29 09:55:22 +0100 |
| commit | 39a1142dbba04d2e08259bd10a369465c932126b (patch) | |
| tree | a2f3b0046a5fe67c07a8f2301413f23c9f57b9b2 /drivers/tty/tty_mutex.c | |
| parent | 65d8fc777f6dcfee12785c057a6b57f679641c90 (diff) | |
| parent | fc77dbd34c5c99bce46d40a2491937c3bcbd10af (diff) | |
Merge tag 'v4.5-rc6' into locking/core, to pick up fixes
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 d2f3c4cd697f..dfa9ec03fa8e 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) |