From 683bce8d2ecebf16147103a49ad891191d390bd5 Mon Sep 17 00:00:00 2001 From: Qiang Huang Date: Fri, 18 Apr 2014 17:29:24 +0800 Subject: [PATCH] drivers: hv: additional switch to use mb() instead of smp_mb() 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 Signed-off-by: Ben Hutchings --- drivers/hv/ring_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 810658e8211..d01edf3c7b2 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -485,7 +485,7 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer, /* 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); -- 2.34.1