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 <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]>
tadfisher · Aug 9, 2021 · c81be74 · c81be74
1 parent fffe3cc
commit c81be74
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
@@ -411,7 +411,7 @@ int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
 
 out_unmap:
 	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,