staging: tidspbridge: make sync_wait_on_event interruptible

So that avoid non-killable process.
Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com>
Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>

drivers/staging/tidspbridge/include/dspbridge/sync.h

@@ -80,13 +80,22 @@ void sync_set_event(struct sync_object *event);
  * This functios will wait until @event is set or until timeout. In case of
  * success the function will return 0 and
  * in case of timeout the function will return -ETIME
+ * in case of signal the function will return -ERESTARTSYS
  */
 
 static inline int sync_wait_on_event(struct sync_object *event,
 							unsigned timeout)
 {
-	return wait_for_completion_timeout(&event->comp,
-		msecs_to_jiffies(timeout)) ? 0 : -ETIME;
+	int res;
+
+	res = wait_for_completion_interruptible_timeout(&event->comp,
+						msecs_to_jiffies(timeout));
+	if (!res)
+		res = -ETIME;
+	else if (res > 0)
+		res = 0;
+
+	return res;
 }
 
 /**