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MIPS/jazzdma: return error code from jazz_dma_map_sg() 

The .map_sg() op now expects an error code instead of zero on failure.

vdma_alloc() may fail for different reasons, but since it only supports
indicating an error via a return of DMA_MAPPING_ERROR, we coalesce the
different reasons into -EIO as is documented on dma_map_sgtable().

Signed-off-by: Martin Oliveira <martin.oliveira@eideticom.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Martin Oliveira 2021-07-29 14:15:27 -06:00 committed by Christoph Hellwig
parent 62af5ca50c
commit af82fe8566
1 changed files with 1 additions and 1 deletions
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arch/mips/jazz/jazzdma.c
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@ -552,7 +552,7 @@ static int jazz_dma_map_sg(struct device *dev, struct scatterlist *sglist,
dir);
sg->dma_address = vdma_alloc(sg_phys(sg), sg->length);
if (sg->dma_address == DMA_MAPPING_ERROR)
return 0;
return -EIO;
sg_dma_len(sg) = sg->length;
}