mn10300: make dma_cache_sync a no-op
mn10300 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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@ -11,9 +11,6 @@
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#ifndef _ASM_DMA_MAPPING_H
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#define _ASM_DMA_MAPPING_H
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#include <asm/cache.h>
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#include <asm/io.h>
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extern const struct dma_map_ops mn10300_dma_ops;
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static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
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@ -25,7 +22,6 @@ static inline
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void dma_cache_sync(void *vaddr, size_t size,
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enum dma_data_direction direction)
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{
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mn10300_dcache_flush_inv();
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}
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#endif
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