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Commit 38388301 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by Linus Torvalds
Browse files

swiotlb: remove unnecessary swiotlb_sync_single_range_* 



swiotlb_sync_single_range_for_cpu and swiotlb_sync_single_range_for_device
are unnecessary because swiotlb_sync_single_for_cpu and
swiotlb_sync_single_for_device can be used instead.

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 712d3e22

include/linux/swiotlb.h

+0 −10
Original line number Diff line number Diff line
@@ -73,16 +73,6 @@ extern void 
swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,

			   int nelems, enum dma_data_direction dir);



extern void

swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,

				  unsigned long offset, size_t size,

				  enum dma_data_direction dir);



extern void

swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,

				     unsigned long offset, size_t size,

				     enum dma_data_direction dir);



extern int

swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);

lib/swiotlb.c

+0 −31
Original line number Diff line number Diff line
@@ -756,37 +756,6 @@ swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, 
}

EXPORT_SYMBOL(swiotlb_sync_single_for_device);



/*

 * Same as above, but for a sub-range of the mapping.

 */

static void

swiotlb_sync_single_range(struct device *hwdev, dma_addr_t dev_addr,

			  unsigned long offset, size_t size,

			  int dir, int target)

{

	swiotlb_sync_single(hwdev, dev_addr + offset, size, dir, target);

}



void

swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,

				  unsigned long offset, size_t size,

				  enum dma_data_direction dir)

{

	swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,

				  SYNC_FOR_CPU);

}

EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_cpu);



void

swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,

				     unsigned long offset, size_t size,

				     enum dma_data_direction dir)

{

	swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,

				  SYNC_FOR_DEVICE);

}

EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_device);



/*

 * Map a set of buffers described by scatterlist in streaming mode for DMA.

 * This is the scatter-gather version of the above swiotlb_map_page