From 75058a302bfa80ff59bf5b25ddb987683a4da650 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Wed, 30 Jul 2014 16:04:39 +0200
Subject: [PATCH] iommu/amd: Fix device_state reference counting

The references to the device state are not dropped
everywhere. This might cause a dead-lock in
amd_iommu_free_device(). Fix it.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Oded Gabbay <oded.gabbay@amd.com>
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