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iommu/vt-d: Detach domain when move device out of group

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When removing a device from an iommu group, the domain should
be detached from the device. Otherwise, the stale domain info
will still be cached by the driver and the driver will refuse
to attach any domain to the device again.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Fixes: b7297783c2 ("iommu/vt-d: Remove duplicated code for device hotplug")
Reported-and-tested-by: Vlad Buslov <vladbu@mellanox.com>
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lkml.org/lkml/2019/7/26/1133
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2019-08-01 11:14:58 +08:00 committed by Joerg Roedel
parent 11f4fe9ba3
commit 458b7c8e0d
1 changed files with 2 additions and 0 deletions
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2
drivers/iommu/intel-iommu.c
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@ -5316,6 +5316,8 @@ static void intel_iommu_remove_device(struct device *dev)
if (!iommu)
return;
dmar_remove_one_dev_info(dev);
iommu_group_remove_device(dev);
iommu_device_unlink(&iommu->iommu, dev);