From: françois romieu <romieu@fr.zoreil.com>
Date: Fri, 1 May 2015 20:14:44 +0000 (+0200)
Subject: via-rhine: dma_wmb transmit barrier.
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~134^2~379^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1efa87241272104d6a12c8b9fcdc4f62634d447;p=pandora-kernel.git

via-rhine: dma_wmb transmit barrier.

Follow the now usual transmit descriptor update path:
1. content change
2. dma_wmb
3. ownership change

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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