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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2015-06-24 16:54:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-24 17:49:38 -0700 |
| commit | ae70a7bbc5eb7d32d9822db4a50fd17b307743de (patch) | |
| tree | 078238bc27359b8a2817f41f4d52fc3c61828421 /arch | |
| parent | e3d8238d7f5c3f539a29f5ac596cd342d847e099 (diff) | |
| download | linux-ae70a7bbc5eb7d32d9822db4a50fd17b307743de.tar.gz linux-ae70a7bbc5eb7d32d9822db4a50fd17b307743de.tar.bz2 linux-ae70a7bbc5eb7d32d9822db4a50fd17b307743de.zip | |
metag: use for_each_sg()
This replaces the plain loop over the sglist array with for_each_sg()
macro which consists of sg_next() function calls. Since metag doesn't
select ARCH_HAS_SG_CHAIN, it is not necessary to use for_each_sg() in
order to loop over each sg element. But this can help find problems
with drivers that do not properly initialize their sg tables when
CONFIG_DEBUG_SG is enabled.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/metag/include/asm/dma-mapping.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/metag/include/asm/dma-mapping.h b/arch/metag/include/asm/dma-mapping.h index 14b23efd9b7a..eb5cdec94be0 100644 --- a/arch/metag/include/asm/dma-mapping.h +++ b/arch/metag/include/asm/dma-mapping.h @@ -134,20 +134,24 @@ dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, } static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, +dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nelems, enum dma_data_direction direction) { int i; - for (i = 0; i < nelems; i++, sg++) + struct scatterlist *sg; + + for_each_sg(sglist, sg, nelems, i) dma_sync_for_cpu(sg_virt(sg), sg->length, direction); } static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) +dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, + int nelems, enum dma_data_direction direction) { int i; - for (i = 0; i < nelems; i++, sg++) + struct scatterlist *sg; + + for_each_sg(sglist, sg, nelems, i) dma_sync_for_device(sg_virt(sg), sg->length, direction); } |