powerpc: make dma_cache_sync a no-op

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powerpc does not implement DMA_ATTR_NON_CONSISTENT allocations, so it
doesn't make any sense to do any work in dma_cache_sync given that it
must be a no-op when dma_alloc_attrs returns coherent memory.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>

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Christoph Hellwig 2017-08-27 10:17:48 +02:00

parent 622bd02207

commit 87f626348a

1 changed files with 0 additions and 2 deletions

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arch/powerpc/include/asm/dma-mapping.h

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