* [PATCH] staging: android: describe use of memory barrier on sync.c
@ 2014-05-24 14:28 Niv Yehezkel
0 siblings, 0 replies; only message in thread
From: Niv Yehezkel @ 2014-05-24 14:28 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel; +Cc: Brian Swetland
Added comments describing the purpose of using write memory
barrier in the context of sync_timeline_destory.
Signed-off-by: Niv Yehezkel <executerx@gmail.com>
---
drivers/staging/android/sync.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
index 1f88c5d..18174f7 100644
--- a/drivers/staging/android/sync.c
+++ b/drivers/staging/android/sync.c
@@ -92,6 +92,10 @@ static void sync_timeline_free(struct kref *kref)
void sync_timeline_destroy(struct sync_timeline *obj)
{
obj->destroyed = true;
+ /*
+ * Ensure timeline is marked as destroyed before
+ * changing timeline's fences status.
+ */
smp_wmb();
/*
--
1.7.10.4
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