From 03cc864a2571af278fc83d24b6a78d8424f92736 Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@redhat.com>
Date: Tue, 7 Apr 2015 16:55:21 -0700
Subject: [PATCH] s2io: Update driver to use dma_wmb

This change updates several spots where a wmb was being used to instead use
a dma_wmb to flush out writes before updating the control portion of the
descriptor.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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