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authorChristoph Hellwig <hch@lst.de>2018-11-30 10:59:37 +0100
committerChristoph Hellwig <hch@lst.de>2018-12-06 06:56:50 -0800
commitb14b9d25a3c707c85e7e31e15766a71365b52ab7 (patch)
treee3ca26fc4cfc4def1bbb89a39123f8fca35427b0 /arch/parisc/Kconfig
parentdma-mapping: remove the mapping_error dma_map_ops method (diff)
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dma-mapping: return an error code from dma_mapping_error
Currently dma_mapping_error returns a boolean as int, with 1 meaning error. This is rather unusual and many callers have to convert it to errno value. The callers are highly inconsistent with error codes ranging from -ENOMEM over -EIO, -EINVAL and -EFAULT ranging to -EAGAIN. Return -ENOMEM which seems to be what the largest number of callers convert it to, and which also matches the typical error case where we are out of resources. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
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