Commit a7fce1f7 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David S. Miller
Browse files

sparc/iommu: use sbus_iommu_unmap_page in sbus_iommu_unmap_sg 



Use the page-level helper instead of duplicating the logic, while also
fixing the incorrect handling of larger than page sized offsets in
the sg variant.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reported-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 031abf0b

arch/sparc/mm/iommu.c

+3 −3
Original line number Diff line number Diff line
@@ -321,11 +321,11 @@ static void sbus_iommu_unmap_sg(struct device *dev, struct scatterlist *sgl, 
		int nents, enum dma_data_direction dir, unsigned long attrs)

{

	struct scatterlist *sg;

	int i, n;

	int i;



	for_each_sg(sgl, sg, nents, i) {

		n = (sg->length + sg->offset + PAGE_SIZE-1) >> PAGE_SHIFT;

		iommu_release_one(dev, sg->dma_address & PAGE_MASK, n);

		sbus_iommu_unmap_page(dev, sg->dma_address, sg->length, dir,

				attrs);

		sg->dma_address = 0x21212121;

	}

}

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