From: Heiko Stübner <heiko@sntech.de>
Date: Wed, 29 Oct 2014 00:22:56 +0000 (+0100)
Subject: iommu: Improve error handling when setting bus iommu
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~13^2~3^2~5^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7da6bdc322bb79c4326dff7c2727236a48c4be9;p=pandora-kernel.git

iommu: Improve error handling when setting bus iommu

When some part of bus_set_iommu fails it should undo any made changes
and not simply leave everything as is.

This includes unregistering the bus notifier in iommu_bus_init when
add_iommu_group fails and also setting the bus->iommu_ops back to NULL.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---

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