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[PATCH 07/12] mn10300: make dma_cache_sync a no-op

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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
-- 
2.11.0

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Thread

refactor dma_cache_sync Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 06/12] microblaze: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 02/12] mips: don't use dma_cache_sync to implement fd_cacheflush Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 05/12] ia64: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 07/12] mn10300: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 11/12] sh: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 09/12] unicore32: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 10/12] xtensa: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 08/12] powerpc: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 01/12] floppy: consolidate the dummy fd_cacheflush definition Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 03/12] frv: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
  [PATCH 12/12] dma-mapping: turn dma_cache_sync into a dma_map_ops method Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
    Re: [PATCH 12/12] dma-mapping: turn dma_cache_sync into a dma_map_ops method Geert Uytterhoeven <geert@linux-m68k.org> - 2017-08-28 08:30 +0200
  [PATCH 04/12] x86: make dma_cache_sync a no-op Christoph Hellwig <hch@lst.de> - 2017-08-27 18:20 +0200
    Re: [PATCH 04/12] x86: make dma_cache_sync a no-op Thomas Gleixner <tglx@linutronix.de> - 2017-08-31 16:10 +0200

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