Messages in this thread Patch in this message | | | From | Logan Gunthorpe <> | Date | Thu, 15 Jul 2021 10:45:43 -0600 | Subject | [PATCH v1 15/16] dma-mapping: return error code from dma_dummy_map_sg() |
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From: Martin Oliveira <martin.oliveira@eideticom.com>
The .map_sg() op now expects an error code instead of zero on failure.
The only errno to return is -ENODEV in the case when DMA is not supported.
Signed-off-by: Martin Oliveira <martin.oliveira@eideticom.com> Signed-off-by: Logan Gunthorpe <logang@deltatee.com> --- kernel/dma/dummy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/dma/dummy.c b/kernel/dma/dummy.c index eacd4c5b10bf..ae9abebed0c4 100644 --- a/kernel/dma/dummy.c +++ b/kernel/dma/dummy.c @@ -22,7 +22,7 @@ static int dma_dummy_map_sg(struct device *dev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir, unsigned long attrs) { - return 0; + return -ENODEV; } static int dma_dummy_supported(struct device *hwdev, u64 mask) -- 2.20.1
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