[PATCH 3.2 88/94] drivers: hv: additional switch to use mb() instead of smp_mb()

[Ben Hutchings]

3.2.58-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Qiang Huang <h.huangqiang@xxxxxxxxxx>

commit e4af376d04b0(drivers: hv: switch to use mb() instead of smp_mb()),
the adjustment mistakenly dropped the change in hv_ringbuffer_read,
so add it.

Signed-off-by: Qiang Huang <h.huangqiang@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 drivers/hv/ring_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -485,7 +485,7 @@ int hv_ringbuffer_read(struct hv_ring_bu
 	/* Make sure all reads are done before we update the read index since */
 	/* the writer may start writing to the read area once the read index */
 	/*is updated */
-	smp_mb();
+	mb();
 
 	/* Update the read index */
 	hv_set_next_read_location(inring_info, next_read_location);

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