From ef0d5b23022e207e9f367de52f4172daab3ac690 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Mon, 6 Jun 2011 15:49:51 -0700 Subject: [PATCH] Staging: hv: vmbus: Fix the memory barrier in hv_ringbuffer_read() Use the correct barrier interface. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Abhishek Kane Signed-off-by: Greg Kroah-Hartman --- drivers/staging/hv/ring_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/hv/ring_buffer.c b/drivers/staging/hv/ring_buffer.c index 3da333018b5a..932af1a01a1e 100644 --- a/drivers/staging/hv/ring_buffer.c +++ b/drivers/staging/hv/ring_buffer.c @@ -513,7 +513,7 @@ 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 */ - mb(); + smp_mb(); /* Update the read index */ hv_set_next_read_location(inring_info, next_read_location);