From e7f9fa5498d91fcdc63d93007ba43f36b1a30538 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Tue, 5 Aug 2014 12:55:45 +0200
Subject: [PATCH] iommu/vt-d: Defer domain removal if device is assigned to a
 driver

When the BUS_NOTIFY_DEL_DEVICE event is received the device
might still be attached to a driver. In this case the domain
can't be released as the mappings might still be in use.

Defer the domain removal in this case until we receivce the
BUS_NOTIFY_UNBOUND_DRIVER event.

Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: stable@vger.kernel.org   # v3.15, v3.16
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
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