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Commit 86d688a3 authored by Sonic Zhang's avatar Sonic Zhang Committed by Bob Liu
Browse files

blackfin: Call sg_for_each to pass through the whole sg list. 



Otherwise, chained sg list may be missed.

Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
parent c8d11a06

arch/blackfin/kernel/dma-mapping.c

+6 −4
Original line number Diff line number Diff line
@@ -122,12 +122,13 @@ void __dma_sync(dma_addr_t addr, size_t size, 
EXPORT_SYMBOL(__dma_sync);



int

dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,

dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents,

	   enum dma_data_direction direction)

{

	struct scatterlist *sg;

	int i;



	for (i = 0; i < nents; i++, sg++) {

	for_each_sg(sg_list, sg, nents, i) {

		sg->dma_address = (dma_addr_t) sg_virt(sg);

		__dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);

	}
@@ -136,12 +137,13 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, 
}

EXPORT_SYMBOL(dma_map_sg);



void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,

void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list,

			    int nelems, enum dma_data_direction direction)

{

	struct scatterlist *sg;

	int i;



	for (i = 0; i < nelems; i++, sg++) {

	for_each_sg(sg_list, sg, nelems, i) {

		sg->dma_address = (dma_addr_t) sg_virt(sg);

		__dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);

	}