From: Joerg Roedel <joerg.roedel@amd.com>
Date: Wed, 17 Sep 2008 12:19:15 +0000 (+0200)
Subject: AMD IOMMU: protect completion wait loop with iommu lock
X-Git-Tag: v2.6.27-rc8~29^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e4f88da7bf1887563f70bd5edbbd0479e31dc12;p=pandora-kernel.git

AMD IOMMU: protect completion wait loop with iommu lock

The unlocked polling of the ComWaitInt bit in the IOMMU completion wait
path is racy. Protect it with the iommu lock.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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