dma_alloc_coherent() on PPC32: physical addresses above 2G possible?

Arjan van de Ven arjan at infradead.org
Mon Jul 21 04:43:58 EST 2008


On Sun, 20 Jul 2008 20:36:23 +0200
Stefan Richter <stefanr at s5r6.in-berlin.de> wrote:

> PS:  I don't want to set the DMA mask of this device to
> DMA_31BIT_MASK because that would be detrimental to other functions
> of the device. It's a TI TSB43AB22A FireWire controller.

Hi,

just want to mention that you can set the coherent mask separately from
the generic mask... is that sufficient for your load?
(you can even set it just for this allocation..)

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