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Subject[PATCH] swiotlb-xen: fix error code returned by xen_swiotlb_map_sg_attrs
Date
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>
---
drivers/xen/swiotlb-xen.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 100962d..8af6862 100644
--- 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 {
--
1.7.2.5


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