X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=ipc%2Fsem.c;h=cb5bb2a5df96f417f5c44b1108e8483ee3a10585;hb=f61ea1b0c825a20a1826bb43a226387091934586;hp=19af028a3e380d251d31e4b8ec4cd96ee679a1cb;hpb=d67eb16f5d444fb6d173bcec889ddb2066c0fa0c;p=mv-sheeva.git

diff --git a/ipc/sem.c b/ipc/sem.c
index 19af028a3e3..cb5bb2a5df9 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -381,6 +381,7 @@ static void update_queue (struct sem_array * sma)
 			/* hands-off: q will disappear immediately after
 			 * writing q->status.
 			 */
+			smp_wmb();
 			q->status = error;
 			q = n;
 		} else {
@@ -461,6 +462,7 @@ static void freeary (struct sem_array *sma, int id)
 		n = q->next;
 		q->status = IN_WAKEUP;
 		wake_up_process(q->sleeper); /* doesn't sleep */
+		smp_wmb();
 		q->status = -EIDRM;	/* hands-off q */
 		q = n;
 	}