From: Jason Wang <jasowang@redhat.com>
Date: Fri, 20 Jan 2012 08:16:59 +0000 (+0800)
Subject: virtio: fix typos of memory barriers
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4dbc5d9f4f791df8a5879f4a655f517adc7f56d1;p=mv-sheeva.git

virtio: fix typos of memory barriers

Note: this fixes a bug introduced recently in
7b21e34fd1c272e3a8c3846168f2f6287a4cd72b.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 79e1b292c03..78428a863b4 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -35,7 +35,7 @@
 #define virtio_rmb(vq) \
 	do { if ((vq)->weak_barriers) smp_rmb(); else rmb(); } while(0)
 #define virtio_wmb(vq) \
-	do { if ((vq)->weak_barriers) smp_rmb(); else rmb(); } while(0)
+	do { if ((vq)->weak_barriers) smp_wmb(); else wmb(); } while(0)
 #else
 /* We must force memory ordering even if guest is UP since host could be
  * running on another CPU, but SMP barriers are defined to barrier() in that