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(parent: e1b44cb) | patch
iommu/amd: Fix group refcounting
authorRobin Murphy <robin.murphy@arm.com>
Fri, 11 Nov 2016 17:59:23 +0000 (17:59 +0000)
committerJoerg Roedel <jroedel@suse.de>
Tue, 15 Nov 2016 11:25:33 +0000 (12:25 +0100)
commitf2f101f6bcb3c47a432543dd309056e58192550f
treefa7da845cdaba345ecd76dcd35add6f87980fd97tree | snapshot (tar.gz zip)
parente1b44cbe7b5d4d97e43a1476b68e0adc1aa5e383commit | diff
iommu/amd: Fix group refcounting

If acpihid_device_group() finds an existing group for the relevant
devid, it should be taking an additional reference on that group.
Otherwise, the caller of iommu_group_get_for_dev() will inadvertently
remove the reference taken by iommu_group_add_device(), and the group
will be freed prematurely if any device is removed.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
drivers/iommu/amd_iommu.c diff | blob | blame | history