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rocket.c: fix unchecked mutex_lock_interruptible()

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Check the return of mutex_lock_interruptible() in drivers/char/rocket.c and
return ERESTARTSYS if we were interrupted.

Signed-off-by: Satyam Sharma <satyam.sharma@gmail.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Satyam Sharma 2007-07-15 23:40:07 -07:00 committed by Linus Torvalds
parent 60bfba7e85
commit 1e3e8d91fe
1 changed files with 2 additions and 1 deletions
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3
drivers/char/rocket.c
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@ -1702,7 +1702,8 @@ static int rp_write(struct tty_struct *tty,
if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
return 0;
mutex_lock_interruptible(&info->write_mtx);
if (mutex_lock_interruptible(&info->write_mtx))
return -ERESTARTSYS;
#ifdef ROCKET_DEBUG_WRITE
printk(KERN_INFO "rp_write %d chars...", count);