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| author | David S. Miller <davem@davemloft.net> | 2016-02-01 18:44:07 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-01 18:44:07 -0800 |
| commit | b45efa30a626e915192a6c548cd8642379cd47cc (patch) | |
| tree | 90d8b43ebceb850b0e7852d75283aebbd2abbc00 /drivers/tty/tty_mutex.c | |
| parent | 7a26019fdecdb45ff784ae4e3b7e0cc9045100ca (diff) | |
| parent | 34229b277480f46c1e9a19f027f30b074512e68b (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/tty/tty_mutex.c')
| -rw-r--r-- | drivers/tty/tty_mutex.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c index 77703a391207..d2f3c4cd697f 100644 --- a/drivers/tty/tty_mutex.c +++ b/drivers/tty/tty_mutex.c @@ -19,6 +19,14 @@ void __lockfunc tty_lock(struct tty_struct *tty) } EXPORT_SYMBOL(tty_lock); +int tty_lock_interruptible(struct tty_struct *tty) +{ + if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty)) + return -EIO; + tty_kref_get(tty); + return mutex_lock_interruptible(&tty->legacy_mutex); +} + void __lockfunc tty_unlock(struct tty_struct *tty) { if (WARN(tty->magic != TTY_MAGIC, "U Bad %p\n", tty)) |