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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-02-22 01:12:47 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-02-22 01:12:47 -0300 |
| commit | 6d461a4fe7896faa1aec5a5417888cf179e46b9f (patch) | |
| tree | 2e0f1a0b7a5418189c8d53592d33a44d0b356fc9 /drivers/tty/tty_mutex.c | |
| parent | 5c545e1fb127a4b11ddc5f1a5ed066b853dd1a1a (diff) | |
Linux-libre 4.4.2-gnupck-4.4.2-gnu
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 0efcf713b..d09293bc0 100644 --- a/drivers/tty/tty_mutex.c +++ b/drivers/tty/tty_mutex.c @@ -22,6 +22,14 @@ 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 (tty->magic != TTY_MAGIC) { |