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>
git-mirror · Oct 29, 2013 · 1517760 · 1517760
1 parent 6b42a7e
commit 1517760
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
@@ -548,7 +548,7 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
 				xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
 							   attrs);
 				sg_dma_len(sgl) = 0;
-				return DMA_ERROR_CODE;
+				return 0;
 			}
 			sg->dma_address = xen_phys_to_bus(map);
 		} else {