AMD IOMMU: align alloc_coherent addresses properly

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The API definition for dma_alloc_coherent states that the bus address
has to be aligned to the next power of 2 boundary greater than the
allocation size. This is violated by AMD IOMMU so far and this patch
fixes it.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Joerg Roedel 2008-09-04 19:18:02 +02:00 • committed by Ingo Molnar

parent 5507eef835

commit 6d4f343f84

1 changed files with 14 additions and 8 deletions

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arch/x86/kernel/amd_iommu.c

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