From 7f760ddd702d162d693bc79f62c3bdd7fe55bd9d Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Thu, 26 Nov 2009 14:49:59 +0100
Subject: [PATCH] x86/amd-iommu: Cleanup attach/detach_device code

This patch cleans up the attach_device and detach_device
paths and fixes reference counting while at it.

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