dma-mapping: warn when there is no coherent_dma_mask

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These days all devices should have a DMA coherent mask, and most dma_ops
implementations rely on that fact.  But just to be sure add an assert to
ring the warning bell if that is not the case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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Christoph Hellwig 2017-12-22 14:50:47 +01:00

parent 4b1b62b67d

commit 205e1b7f51

1 changed files with 1 additions and 0 deletions

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include/linux/dma-mapping.h

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