Commit f406f222 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

hexagon: implement the sync_sg_for_device DMA operation 



This methods needs to provide the equivalent of sync_single_for_device
for each S/G list element, but was missing.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 37fca4bd

arch/hexagon/kernel/dma.c

+13 −0
Original line number Diff line number Diff line
@@ -188,6 +188,18 @@ static void hexagon_sync_single_for_device(struct device *dev, 
	dma_sync(dma_addr_to_virt(dma_handle), size, dir);

}



static void hexagon_sync_sg_for_device(struct device *dev,

		struct scatterlist *sgl, int nents, enum dma_data_direction dir)

{

	struct scatterlist *sg;

	int i;



	for_each_sg(sgl, sg, nents, i)

		hexagon_sync_single_for_device(dev, sg_dma_address(sg),

				sg->length, dir);

}





static int hexagon_mapping_error(struct device *dev, dma_addr_t dma_addr)

{

	return dma_addr == HEXAGON_MAPPING_ERROR;
@@ -199,6 +211,7 @@ const struct dma_map_ops hexagon_dma_ops = { 
	.map_sg		= hexagon_map_sg,

	.map_page	= hexagon_map_page,

	.sync_single_for_device = hexagon_sync_single_for_device,

	.sync_sg_for_device = hexagon_sync_sg_for_device,

	.mapping_error	= hexagon_mapping_error,

};