[Linaro-mm-sig] [RFC] ARM DMA mapping TODO, v1

Russell King - ARM Linux linux at arm.linux.org.uk
Thu Apr 28 10:34:40 EDT 2011

On Thu, Apr 28, 2011 at 04:29:52PM +0200, Arnd Bergmann wrote:
> Given that people still want to have an interface that does what I
> though this one did, I guess we have two options:
> * Kill off dma_cache_sync and replace it with calls to dma_sync_*
>   so we can start using dma_alloc_noncoherent on ARM

I don't think this is an option as dma_sync_*() is part of the streaming
DMA mapping API (dma_map_*) which participates in the idea of buffer
ownership, which the noncoherent API doesn't appear to.

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