From: Santosh Nayak <redacted>

If locking attempt was interrupted by a signal then we should
return -EINTR so that caller can take appropriate action.

We have 3 callers: gigaset_probe(), gigaset_tty_open() and
gigaset_probe(). Each caller tries to free allocated memory
if lock fails. This is possible if we returns -EINTR.

Signed-off-by: Santosh Nayak <redacted>
---
 drivers/isdn/gigaset/common.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
index 7679270..2d10f3a 100644
--- a/drivers/isdn/gigaset/common.c
+++ b/drivers/isdn/gigaset/common.c

@@ -903,7 +903,7 @@ int gigaset_start(struct cardstate *cs)
 	unsigned long flags;
 
 	if (mutex_lock_interruptible(&cs->mutex))
-		return 0;
+		return -EINTR;
 
 	spin_lock_irqsave(&cs->lock, flags);
 	cs->connected = 1;

-- 
1.7.4.4