From 15898bbcb48fc86c2baff156163df0941ecb6a15 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 24 Nov 2009 15:39:42 +0100
Subject: [PATCH] x86/amd-iommu: Let domain_for_device handle aliases

If there is no domain associated to a device yet and the
device has an alias device which already has a domain, the
original device needs to have the same domain as the alias
device.
This patch changes domain_for_device to handle this
situation and directly assigns the alias device domain to
the device in this situation.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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