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Commit 87f62634 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

powerpc: make dma_cache_sync a no-op 



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: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
parent 622bd022

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

+0 −2
Original line number Diff line number Diff line
@@ -144,8 +144,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) 
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,

		enum dma_data_direction direction)

{

	BUG_ON(direction == DMA_NONE);

	__dma_sync(vaddr, size, (int)direction);

}



#endif /* __KERNEL__ */