iommu/amd: Fix alloc_irq_index() increment

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On an is_allocated() interrupt index, we ALIGN() the current index and
then increment it via the for loop, guaranteeing that it is no longer
aligned for alignments >1.  We instead need to align the next index,
to guarantee forward progress, moving the increment-only to the case
where the index was found to be unallocated.

Fixes: 37946d95fc ('iommu/amd: Add align parameter to alloc_irq_index()')
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

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Alex Williamson 2017-11-03 10:50:31 -06:00

parent a593472591

commit 07d1c91b6c

1 changed files with 4 additions and 3 deletions

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drivers/iommu/amd_iommu.c

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