DMA-API: provide a helper to setup DMA masks

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Many drivers contain code such as:

	dev->dma_mask = &dev->coherent_dma_mask;
	dev->coherent_dma_mask = MASK;

Let's move this pattern out of drivers and have the DMA API provide a
helper for it.  This helper uses dma_set_mask_and_coherent() to allow
platform issues to be properly dealt with via dma_set_mask()/
dma_is_supported().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Russell King 2013-06-27 12:21:45 +01:00

parent 4ffb4318b0

commit fa6a8d6d65

1 changed files with 10 additions and 0 deletions

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include/linux/dma-mapping.h

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