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Commit dcc9c919 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Stafford Horne
Browse files

openrisc: remove the no-op unmap_page and unmap_sg DMA operations 



Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarStafford Horne <shorne@gmail.com>
parent 1902cbcc

arch/openrisc/kernel/dma.c

+0 −23
Original line number Diff line number Diff line
@@ -171,14 +171,6 @@ or1k_map_page(struct device *dev, struct page *page, 
	return addr;

}



static void

or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,

		size_t size, enum dma_data_direction dir,

		unsigned long attrs)

{

	/* Nothing special to do here... */

}



static int

or1k_map_sg(struct device *dev, struct scatterlist *sg,

	    int nents, enum dma_data_direction dir,
@@ -195,19 +187,6 @@ or1k_map_sg(struct device *dev, struct scatterlist *sg, 
	return nents;

}



static void

or1k_unmap_sg(struct device *dev, struct scatterlist *sg,

	      int nents, enum dma_data_direction dir,

	      unsigned long attrs)

{

	struct scatterlist *s;

	int i;



	for_each_sg(sg, s, nents, i) {

		or1k_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir, 0);

	}

}



static void

or1k_sync_single_for_device(struct device *dev,

			    dma_addr_t dma_handle, size_t size,
@@ -226,9 +205,7 @@ const struct dma_map_ops or1k_dma_map_ops = { 
	.alloc = or1k_dma_alloc,

	.free = or1k_dma_free,

	.map_page = or1k_map_page,

	.unmap_page = or1k_unmap_page,

	.map_sg = or1k_map_sg,

	.unmap_sg = or1k_unmap_sg,

	.sync_single_for_device = or1k_sync_single_for_device,

};

EXPORT_SYMBOL(or1k_dma_map_ops);