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dma-direct: return appropriate error code from dma_direct_map_sg() 

Now that the map_sg() op expects error codes instead of return zero on
error, convert dma_direct_map_sg() to return an error code. Per the
documentation for dma_map_sgtable(), -EIO is returned due to an
DMA_MAPPING_ERROR with unknown cause.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Logan Gunthorpe 2021-07-29 14:15:20 -06:00 committed by Christoph Hellwig
parent fffe3cc8c2
commit c81be74e7d
1 changed files with 1 additions and 1 deletions
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2
kernel/dma/direct.c
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@ -411,7 +411,7 @@ int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
out_unmap: out_unmap:
dma_direct_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC); dma_direct_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC);
return 0; return -EIO;
} }
dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr, dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr,