swiotlb-xen: fix error code returned by xen_swiotlb_map_sg_attrs
map_sg returns the number of elements mapped, not a dma_addr_t. In case of error return 0, not DMA_ERROR_CODE. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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@ -548,7 +548,7 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
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xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
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xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
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attrs);
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attrs);
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sg_dma_len(sgl) = 0;
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sg_dma_len(sgl) = 0;
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return DMA_ERROR_CODE;
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return 0;
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}
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}
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sg->dma_address = xen_phys_to_bus(map);
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sg->dma_address = xen_phys_to_bus(map);
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} else {
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} else {
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