Re: [PATCH 6/6] atmel_serial: Add DMA support

[Haavard Skinnemoen]

On Wed, 23 Jan 2008 14:52:55 +0100
Marc Pignat <marc.pignat@xxxxxxx> wrote:

> On Wednesday 23 January 2008, Haavard Skinnemoen wrote:
> > On Wed, 23 Jan 2008 14:18:38 +0100
> ...
> > GFP_DMA doesn't have anything to do with alignment, AFAIK.
> I don't even know if it does something for at91 or avr32, but there is a flag
> for dma memory, so we should use it.

No, I think GFP_DMA is for legacy ISA DMA and other DMA controllers
with addressing limitations. The PDC is capable of accessing the full
32-bit physical address space on both AT91 and AVR32, so no special DMA
flags are needed.

Haavard
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/