iommu: Check the result of iommu_group_get() for NULL

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The result of iommu_group_get() was being blindly used in both
attach and detach which results in a dereference when trying
to work with an unknown device.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

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Jordan Crouse 2017-12-20 09:48:36 -07:00 • committed by Alex Williamson

parent 1291a0d504

commit 9ae9df035c

1 changed files with 5 additions and 0 deletions

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drivers/iommu/iommu.c

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