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| author | Christoph Hellwig <hch@lst.de> | 2017-08-27 10:17:48 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2017-10-19 16:37:33 +0200 |
| commit | 87f626348a7a4f9d21c321b6326492de9aef245f (patch) | |
| tree | f4889680038dc987032b69639d8d01e9b011cf1c /arch | |
| parent | 622bd022078263fdebb566c32804551812576432 (diff) | |
| download | linux-0-day-87f626348a7a4f9d21c321b6326492de9aef245f.tar.gz linux-0-day-87f626348a7a4f9d21c321b6326492de9aef245f.tar.xz | |
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: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/dma-mapping.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index eaece3d3e2254..320846442bfb0 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -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__ */ |