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| author | Hiroshi Doyu <hdoyu@nvidia.com> | 2012-09-11 07:39:39 +0200 |
|---|---|---|
| committer | Cyril Chemparathy <cyril@ti.com> | 2012-09-21 10:44:22 -0400 |
| commit | a2bab9d57c37a15250bd944d00dfcf18282cd002 (patch) | |
| tree | 1c753579b404e3c0181c5f169ace2494b7dd0cfc | |
| parent | 6287018d9798f85b28c0ed9e804724080d736590 (diff) | |
| download | linux-keystone-a2bab9d57c37a15250bd944d00dfcf18282cd002.tar.gz | |
ARM: dma-mapping: Small logical clean up
Skip unnecessary operations if order == 0. A little bit easier to
read.
Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 1b3847d6ebf2f9..24d984e220e27f 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1060,11 +1060,12 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size, gfp_t if (!pages[i]) goto error; - if (order) + if (order) { split_page(pages[i], order); - j = 1 << order; - while (--j) - pages[i + j] = pages[i] + j; + j = 1 << order; + while (--j) + pages[i + j] = pages[i] + j; + } __dma_clear_buffer(pages[i], PAGE_SIZE << order); i += 1 << order; |