Christoph Hellwig e29ccc188f dma-mapping: add a dma_can_mmap helper
Add a helper to check if DMA allocations for a specific device can be
mapped to userspace using dma_mmap_*.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-09-04 11:13:18 +02:00
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