From c9eb6172c328dde7e14812f94f8da87b691e41b5 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 27 Aug 2017 10:37:15 +0200 Subject: dma-mapping: turn dma_cache_sync into a dma_map_ops method After we removed all the dead wood it turns out only two architectures actually implement dma_cache_sync as a real op: mips and parisc. Add a cache_sync method to struct dma_map_ops and implement it for the mips defualt DMA ops, and the parisc pa11 ops. Note that arm, arc and openrisc support DMA_ATTR_NON_CONSISTENT, but never provided a functional dma_cache_sync implementations, which seems somewhat odd. Signed-off-by: Christoph Hellwig Reviewed-by: Robin Murphy --- arch/tile/include/asm/dma-mapping.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'arch/tile/include/asm') diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h index 7061dc8af43a..97ad62878290 100644 --- a/arch/tile/include/asm/dma-mapping.h +++ b/arch/tile/include/asm/dma-mapping.h @@ -67,13 +67,4 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) #define HAVE_ARCH_DMA_SET_MASK 1 int dma_set_mask(struct device *dev, u64 mask); -/* - * dma_alloc_attrs() always returns non-cacheable memory, so there's no need to - * do any flushing here. - */ -static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, - enum dma_data_direction direction) -{ -} - #endif /* _ASM_TILE_DMA_MAPPING_H */ -- cgit v1.2.3