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| author | Robin Murphy <robin.murphy@arm.com> | 2016-11-11 20:59:22 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-11-15 14:25:33 +0300 |
| commit | e1b44cbe7b5d4d97e43a1476b68e0adc1aa5e383 (patch) | |
| tree | 7c283d38914e753d1d65563c9101c2073282b8e8 /drivers/iommu/mtk_iommu.c | |
| parent | 13f59a78c6d69a9bf4c8989dd5f3396f54a2fe41 (diff) | |
| download | linux-e1b44cbe7b5d4d97e43a1476b68e0adc1aa5e383.tar.xz | |
iommu/arm-smmu: Fix group refcounting
When arm_smmu_device_group() finds an existing group due to Stream ID
aliasing, 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.
Reported-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/mtk_iommu.c')
0 files changed, 0 insertions, 0 deletions