diff options
| author | Sonic Zhang <sonic.zhang@analog.com> | 2012-05-22 18:23:40 +0800 |
|---|---|---|
| committer | Bob Liu <lliubbo@gmail.com> | 2012-07-24 13:39:48 +0800 |
| commit | 86d688a3c370093f978c7ced9b510944301fc9d4 (patch) | |
| tree | 8cce56eaa8994c2af8108af887939e712bb7061f /arch/blackfin/kernel | |
| parent | c8d11a06bf8242d5d6ff86fa2514c4f50cb847fb (diff) | |
blackfin: Call sg_for_each to pass through the whole sg list.
Otherwise, chained sg list may be missed.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Diffstat (limited to 'arch/blackfin/kernel')
| -rw-r--r-- | arch/blackfin/kernel/dma-mapping.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c index f0d1118f1825..e7be6532d6a0 100644 --- a/arch/blackfin/kernel/dma-mapping.c +++ b/arch/blackfin/kernel/dma-mapping.c @@ -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); } |