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[v2,09/22] dma-direct: Return appropriate error code from dma_direct_map_sg()

Message ID 20210513223203.5542-10-logang@deltatee.com (mailing list archive)
State New
Headers show
Series Add new DMA mapping operation for P2PDMA | expand

Commit Message

Logan Gunthorpe May 13, 2021, 10:31 p.m. UTC
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. The
only error to return presently is EINVAL if a page could not
be mapped.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
 kernel/dma/direct.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index f737e3347059..803ee9321170 100644
--- 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,
 	dma_direct_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC);
-	return 0;
+	return -EINVAL;
 dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr,