From: Joerg Roedel <jroedel@suse.de>
Date: Tue, 5 Aug 2014 10:55:45 +0000 (+0200)
Subject: iommu/vt-d: Defer domain removal if device is assigned to a driver
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~26^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7f9fa5498d91fcdc63d93007ba43f36b1a30538;p=pandora-kernel.git

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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