[PATCH] kernel/locking: Return proper value in __down_common()

[huteng . ht]

From: Teng Hu <huteng.ht@xxxxxxxxxxxxx>

Return -ETIME when a process waiting on a semaphore woken up
due to timedout, while return -EINTR when woken up by a signal.

Signed-off-by: Teng Hu <huteng.ht@xxxxxxxxxxxxx>
---
 kernel/locking/semaphore.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/locking/semaphore.c b/kernel/locking/semaphore.c
index 9ee381e4d2a4..97ad6a747d2f 100644
--- a/kernel/locking/semaphore.c
+++ b/kernel/locking/semaphore.c
@@ -225,6 +225,8 @@ static inline int __sched __down_common(struct semaphore *sem, long state,
 		raw_spin_lock_irq(&sem->lock);
 		if (waiter.up)
 			return 0;
+		if (timeout)
+			goto interrupted;
 	}
 
  timed_out:
-- 
2.20.1