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    Subject[PATCH 03/11] frv: make dma_cache_sync a no-op
    Date
    frv 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>
    ---
    arch/frv/include/asm/dma-mapping.h | 1 -
    1 file changed, 1 deletion(-)

    diff --git a/arch/frv/include/asm/dma-mapping.h b/arch/frv/include/asm/dma-mapping.h
    index 354900917585..da0e5c9744c4 100644
    --- a/arch/frv/include/asm/dma-mapping.h
    +++ b/arch/frv/include/asm/dma-mapping.h
    @@ -18,7 +18,6 @@ static inline
    void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
    enum dma_data_direction direction)
    {
    - flush_write_buffers();
    }

    #endif /* _ASM_DMA_MAPPING_H */
    --
    2.14.1
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