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swiotlb-xen: replace dma_length with sg_dma_len() macro

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swiotlb-xen has an implicit dependency on CONFIG_NEED_SG_DMA_LENGTH.
Remove it by replacing dma_length with sg_dma_len.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Stefano Stabellini
2013-08-05 17:30:48 +01:00
committed by Konrad Rzeszutek Wilk
parent 4d86ec7a8a
commit 781575cd81
1 changed files with 4 additions and 4 deletions
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8
drivers/xen/swiotlb-xen.c
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@@ -506,13 +506,13 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
to do proper error handling. */ to do proper error handling. */
xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir, xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
attrs); attrs);
sgl[0].dma_length = 0; sg_dma_len(sgl) = 0;
return DMA_ERROR_CODE; return DMA_ERROR_CODE;
} }
sg->dma_address = xen_phys_to_bus(map); sg->dma_address = xen_phys_to_bus(map);
} else } else
sg->dma_address = dev_addr; sg->dma_address = dev_addr;
sg->dma_length = sg->length; sg_dma_len(sg) = sg->length;
} }
return nelems; return nelems;
} }
@@ -533,7 +533,7 @@ xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
BUG_ON(dir == DMA_NONE); BUG_ON(dir == DMA_NONE);
for_each_sg(sgl, sg, nelems, i) for_each_sg(sgl, sg, nelems, i)
xen_unmap_single(hwdev, sg->dma_address, sg->dma_length, dir); xen_unmap_single(hwdev, sg->dma_address, sg_dma_len(sg), dir);
} }
EXPORT_SYMBOL_GPL(xen_swiotlb_unmap_sg_attrs); EXPORT_SYMBOL_GPL(xen_swiotlb_unmap_sg_attrs);
@@ -555,7 +555,7 @@ xen_swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl,
for_each_sg(sgl, sg, nelems, i) for_each_sg(sgl, sg, nelems, i)
xen_swiotlb_sync_single(hwdev, sg->dma_address, xen_swiotlb_sync_single(hwdev, sg->dma_address,
sg->dma_length, dir, target); sg_dma_len(sg), dir, target);
} }
void void