From: Brian King <brking@linux.vnet.ibm.com>
Date: Fri, 23 May 2014 15:52:11 +0000 (-0500)
Subject: ibmvscsi: Add memory barriers for send / receive
X-Git-Tag: omap-for-v3.16/fixes-rc4~12^2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7114aae02742d6b5c5a0d39a41deb61d415d3717;p=pandora-kernel.git

ibmvscsi: Add memory barriers for send / receive

Add a memory barrier prior to sending a new command to the VIOS
to ensure the VIOS does not receive stale data in the command buffer.
Also add a memory barrier when processing the CRQ for completed commands.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Christoph Hellwig <hch@lst.de>
---

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