From: Joerg Roedel <joerg.roedel@amd.com>
Date: Fri, 28 May 2010 12:26:48 +0000 (+0200)
Subject: x86/amd-iommu: Fix crash when request_mem_region fails
X-Git-Tag: v2.6.35-rc2~44^2~1^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e82752d8b5a7e0a5e4d607fd8713549e2a4e2741;p=pandora-kernel.git

x86/amd-iommu: Fix crash when request_mem_region fails

When request_mem_region fails the error path tries to
disable the IOMMUs. This accesses the mmio-region which was
not allocated leading to a kernel crash. This patch fixes
the issue.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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