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Commit 5a796eeb authored by Hiroshi Doyu's avatar Hiroshi Doyu Committed by Marek Szyprowski
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ARM: dma-mapping: Small logical clean up 



Skip unnecessary operations if order == 0. A little bit easier to
read.

Signed-off-by: default avatarHiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
parent bdd43cb3

arch/arm/mm/dma-mapping.c

+5 −4
Original line number Original line Diff line number Diff line
@@ -1012,11 +1012,12 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size, gfp_t 
		if (!pages[i])

		if (!pages[i])

			goto error;

			goto error;





		if (order)

		if (order) {

			split_page(pages[i], order);

			split_page(pages[i], order);

			j = 1 << order;

			j = 1 << order;

			while (--j)

			while (--j)

				pages[i + j] = pages[i] + j;

				pages[i + j] = pages[i] + j;

		}





		__dma_clear_buffer(pages[i], PAGE_SIZE << order);

		__dma_clear_buffer(pages[i], PAGE_SIZE << order);

		i += 1 << order;

		i += 1 << order;