Nicolin Chen 2b33598e66
iommu: Do not revert set_domain for the last gdev ...
The last gdev is the device that failed the __iommu_device_set_domain().
So, it doesn't need to be reverted, given it's attached to group->domain
already.
This is not a problem currently, since it's a simply re-attach. However,
the core will need to pass in the old domain to __iommu_device_set_domain
so the old domain pointers would be inconsistent between a failed device
and all its prior succeeded devices, as all the prior devices need to be
reverted.
Avoid the re-attach for the last gdev, by breaking before the revert.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com >
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com >
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com >
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com >
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2b33598e66