From db0fa0cb015794dd19f664933d49c6ce902ec1e1 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 17 Aug 2015 08:13:26 -0600 Subject: 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 Signed-off-by: Jens Axboe --- arch/arm/mm/dma-mapping.c | 2 +- arch/microblaze/kernel/dma.c | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'arch') 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; -- cgit v1.2.3-70-g09d2