tree 65411798415b8d124525ee4d51426b08f47fd028
parent 38ec010d9b04ed94845f8ff6f10d33eb6bbfe180
author Heiko Stübner <heiko@sntech.de> 1414542176 +0100
committer Joerg Roedel <jroedel@suse.de> 1415109648 +0100

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>