iommu: Do more input validation in iommu_map_sg()

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The IOMMU-API works on page boundarys, unlike the DMA-API
which can work with sub-page buffers. The sg->offset
field does not make sense on the IOMMU level, so force it to
be 0. Do some error-path consolidation while at it.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Joerg Roedel 2014-11-04 14:53:51 +01:00

parent 315786ebbf

commit 38ec010d9b

1 changed files with 18 additions and 11 deletions

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drivers/iommu/iommu.c

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