Commit 2c647ebe authored by Martin Oliveira's avatar Martin Oliveira Committed by Christoph Hellwig
Browse files

xen: swiotlb: return error code from xen_swiotlb_map_sg() 



The .map_sg() op now expects an error code instead of zero on failure.

xen_swiotlb_map_sg() may only fail if xen_swiotlb_map_page() fails, but
xen_swiotlb_map_page() only supports returning errors as
DMA_MAPPING_ERROR. So coalesce all errors into EIO per the documentation
for dma_map_sgtable().

Signed-off-by: default avatarMartin Oliveira <martin.oliveira@eideticom.com>
Signed-off-by: default avatarLogan Gunthorpe <logang@deltatee.com>
Reviewed-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 9a22f2f3

drivers/xen/swiotlb-xen.c

+1 −1
Original line number Diff line number Diff line
@@ -509,7 +509,7 @@ xen_swiotlb_map_sg(struct device *dev, struct scatterlist *sgl, int nelems, 
out_unmap:

	xen_swiotlb_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC);

	sg_dma_len(sgl) = 0;

	return 0;

	return -EIO;

}



static void