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| author | Martin Oliveira <martin.oliveira@eideticom.com> | 2021-07-29 14:15:38 -0600 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-08-09 17:13:06 +0200 |
| commit | 66ab63104f9cab09209851fef168f5972d791903 (patch) | |
| tree | e476b97c862cdf8323469828bc364b2deeafb018 /kernel/dma/dummy.c | |
| parent | 183dc86335e69f516b94f169afd784cf97cb8421 (diff) | |
| download | lwn-66ab63104f9cab09209851fef168f5972d791903.tar.gz lwn-66ab63104f9cab09209851fef168f5972d791903.zip | |
dma-mapping: return error code from dma_dummy_map_sg()
The .map_sg() op now expects an error code instead of zero on failure.
The only errno to return is -EINVAL 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>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'kernel/dma/dummy.c')
| -rw-r--r-- | kernel/dma/dummy.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/dma/dummy.c b/kernel/dma/dummy.c index eacd4c5b10bf..b492d59ac77e 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 -EINVAL; } static int dma_dummy_supported(struct device *hwdev, u64 mask) |