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

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Otherwise, chained sg list may be missed.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
This commit is contained in:
Sonic Zhang 2012-05-22 18:23:40 +08:00 committed by Bob Liu
parent c8d11a06bf
commit 86d688a3c3
1 changed files with 6 additions and 4 deletions
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10
arch/blackfin/kernel/dma-mapping.c
View file

@ -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);
}