From: David Woodhouse <David.Woodhouse@intel.com>
Date: Fri, 3 Apr 2009 23:39:25 +0000 (+0100)
Subject: intel-iommu: Fix device-to-iommu mapping for PCI-PCI bridges.
X-Git-Tag: v2.6.30-rc1~175^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=924b6231edfaf1e764ffb4f97ea382bf4facff58;p=pandora-kernel.git

intel-iommu: Fix device-to-iommu mapping for PCI-PCI bridges.

When the DMAR table identifies that a PCI-PCI bridge belongs to a given
IOMMU, that means that the bridge and all devices behind it should be
associated with the IOMMU. Not just the bridge itself.

This fixes the device_to_iommu() function accordingly.

(It's broken if you have the same PCI bus numbers in multiple domains,
but this function was always broken in that way; I'll be dealing with
that later).

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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