swiotlb-xen: fix error code returned by xen_swiotlb_map_sg_attrs
authorStefano Stabellini <stefano.stabellini@eu.citrix.com>
Tue, 29 Oct 2013 00:37:37 +0000 (00:37 +0000)
committerStefano Stabellini <stefano.stabellini@eu.citrix.com>
Tue, 29 Oct 2013 00:37:37 +0000 (00:37 +0000)
commit15177608c703e7b4aa29aa7c93b31001effe504c
tree2079dbb9b9298bf1e2d25473b182e4ca4dd46de5
parent6b42a7eafb25ae9fda1708c501661384d1f60482
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>
drivers/xen/swiotlb-xen.c