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Subject[PATCH 06/11] mn10300: make dma_cache_sync a no-op
Date
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>
---
arch/mn10300/include/asm/dma-mapping.h | 4 ----
1 file changed, 4 deletions(-)

diff --git a/arch/mn10300/include/asm/dma-mapping.h b/arch/mn10300/include/asm/dma-mapping.h
index 737ef574b3ea..dc24163b190f 100644
--- a/arch/mn10300/include/asm/dma-mapping.h
+++ b/arch/mn10300/include/asm/dma-mapping.h
@@ -11,9 +11,6 @@
#ifndef _ASM_DMA_MAPPING_H
#define _ASM_DMA_MAPPING_H

-#include <asm/cache.h>
-#include <asm/io.h>
-
extern const struct dma_map_ops mn10300_dma_ops;

static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
@@ -25,7 +22,6 @@ static inline
void dma_cache_sync(void *vaddr, size_t size,
enum dma_data_direction direction)
{
- mn10300_dcache_flush_inv();
}

#endif
--
2.14.1
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