iommu/amd: Add align parameter to alloc_irq_index()

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For multi-MSI IRQ ranges the IRQ index needs to be aligned
to the power-of-two of the requested IRQ count. Extend the
alloc_irq_index() function to allow such an allocation.

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Fixes: 2b32450634 ('iommu/amd: Add routines to manage irq remapping tables')
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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This commit is contained in:

Joerg Roedel 2017-10-06 12:16:39 +02:00

parent 9e66317d3c

commit 37946d95fc

1 changed files with 14 additions and 8 deletions

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drivers/iommu/amd_iommu.c

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