[PATCH 2/2] dma: change coherent memory to normal noncached

Russell King - ARM Linux linux at arm.linux.org.uk
Fri Nov 20 16:06:19 EST 2009


On Fri, Nov 20, 2009 at 12:29:11PM -0800, Abhijeet Dharmapurikar wrote:
> We need dma_alloc_coherent() to use its own page protection modifier,
> which causes it to behave the same as dma_alloc_writecombine() on ARMv7,
> and with the existing behaviour (for the time being) on ARMv6 and below.
> We should leave pgprot_noncached() well alone until we know that its
> other places need to be changed.

As I say, I have a large set of changes which impacts this patch, and
the original patch is already in my DMA patch queue.



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