summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorDan Williams <dan.j.williams@intel.com>2015-08-17 08:13:26 -0600
committerJens Axboe <axboe@fb.com>2015-08-17 08:13:26 -0600
commitdb0fa0cb015794dd19f664933d49c6ce902ec1e1 (patch)
tree3c3dddb796ddb24b24de8081df7851495cfafc11 /arch
parent89e2a8404e4415da1edbac6ca4f7332b4a74fae2 (diff)
downloadlinux-sh-db0fa0cb015794dd19f664933d49c6ce902ec1e1.tar.gz
scatterlist: use sg_phys()
Coccinelle cleanup to replace open coded sg to physical address translations. This is in preparation for introducing scatterlists that reference __pfn_t. // sg_phys.cocci: convert usage page_to_phys(sg_page(sg)) to sg_phys(sg) // usage: make coccicheck COCCI=sg_phys.cocci MODE=patch virtual patch @@ struct scatterlist *sg; @@ - page_to_phys(sg_page(sg)) + sg->offset + sg_phys(sg) @@ struct scatterlist *sg; @@ - page_to_phys(sg_page(sg)) + sg_phys(sg) & PAGE_MASK Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mm/dma-mapping.c2
-rw-r--r--arch/microblaze/kernel/dma.c3
2 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 1ced8a0f7a52..4efaefd61c1c 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1520,7 +1520,7 @@ static int __map_sg_chunk(struct device *dev, struct scatterlist *sg,
return -ENOMEM;
for (count = 0, s = sg; count < (size >> PAGE_SHIFT); s = sg_next(s)) {
- phys_addr_t phys = page_to_phys(sg_page(s));
+ phys_addr_t phys = sg_phys(s) & PAGE_MASK;
unsigned int len = PAGE_ALIGN(s->offset + s->length);
if (!is_coherent &&
diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c
index bf4dec229437..c89da6312954 100644
--- a/arch/microblaze/kernel/dma.c
+++ b/arch/microblaze/kernel/dma.c
@@ -61,8 +61,7 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
/* FIXME this part of code is untested */
for_each_sg(sgl, sg, nents, i) {
sg->dma_address = sg_phys(sg);
- __dma_sync(page_to_phys(sg_page(sg)) + sg->offset,
- sg->length, direction);
+ __dma_sync(sg_phys(sg), sg->length, direction);
}
return nents;