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scatterlist: use sg_phys()

Browse source 
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 <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Dan Williams 2015-08-17 08:13:26 -06:00 • committed by Jens Axboe
commit db0fa0cb01
5 changed files with 7 additions and 8 deletions
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3
arch/microblaze/kernel/dma.c
View file

@ -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;