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dma-mapping: don't return errors from dma_set_max_seg_size

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A NULL dev->dma_parms indicates either a bus that is not DMA capable or
grave bug in the implementation of the bus code.

There isn't much the driver can do in terms of error handling for either
case, so just warn and continue as DMA operations will fail anyway.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC
This commit is contained in:
Christoph Hellwig
2024-07-19 06:07:38 +02:00
committed by CrazyCat
parent 94ccb0eaa8
commit ccdc4b976b
11 changed files with 15 additions and 45 deletions
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10
include/linux/dma-mapping.h
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@@ -484,13 +484,11 @@ static inline unsigned int dma_get_max_seg_size(struct device *dev)
return SZ_64K;
}
static inline int dma_set_max_seg_size(struct device *dev, unsigned int size)
static inline void dma_set_max_seg_size(struct device *dev, unsigned int size)
{
if (dev->dma_parms) {
dev->dma_parms->max_segment_size = size;
return 0;
}
return -EIO;
if (WARN_ON_ONCE(!dev->dma_parms))
return;
dev->dma_parms->max_segment_size = size;
}
static inline unsigned long dma_get_seg_boundary(struct device *dev)