[PATCH 29/49] Staging: hv: vmbus: Change the memory barrier in hv_ringbuffer_write()

[K. Y. Srinivasan]

Use the correct memory barrier interface in Change the memory barrier 
in hv_ringbuffer_write().

Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Signed-off-by: Abhishek Kane <v-abkane@xxxxxxxxxxxxx>
---
 drivers/staging/hv/ring_buffer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/hv/ring_buffer.c b/drivers/staging/hv/ring_buffer.c
index 8b62553..42f7672 100644
--- a/drivers/staging/hv/ring_buffer.c
+++ b/drivers/staging/hv/ring_buffer.c
@@ -413,7 +413,7 @@ int hv_ringbuffer_write(struct hv_ring_buffer_info *outring_info,
 					     sizeof(u64));
 
 	/* Make sure we flush all writes before updating the writeIndex */
-	mb();
+	smp_wmb();
 
 	/* Now, update the write location */
 	hv_set_next_write_location(outring_info, next_write_location);
-- 
1.7.4.1

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