[PATCH v2 1/4] dma-mapping: Add devm_ interface for dma_map_single()
Tejun Heo
tj at kernel.org
Wed Jun 4 14:14:16 UTC 2014
Hello,
On Wed, Jun 04, 2014 at 04:12:11PM +0200, Joerg Roedel wrote:
> Yes, but those drivers usually get DMA buffers at init time with the
> dma_alloc_* interfaces. The dma_map_* interfaces discussed here belong
> to the streaming DMA-API, so they are usually used for only one DMA
> transaction before dma_unmap_* is called on them.
>
> A devm interface for the dma_alloc_* family of functions would
> actually make sense, but not for the dma_map_* functions.
Ah, okay. Fair enough.
Thanks.
--
tejun
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