Re: [Uclinux-dist-devel] [PATCH] USB: musb: correct DMA address for tx

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On Tue, Dec 22, 2009 at 16:55, Felipe Balbi wrote:
> On Tue, Dec 22, 2009 at 03:18:02AM +0100, ext Mike Frysinger wrote:
>> Since a DMA transfer may need to be kicked off several times to complete,
>> the DMA start must include the length that has already been transferred.
>
> not so true since current code uses mode1 dma for TX which will always
> transfer everything. Still it's good to be safe. I'm picking this unless
> someone else has a problem with it.

and that leads into another patch we have ... the Blackfin MUSB has
some anomalies where mode1 DMA is screwy, so we need this correctness
for things to be transferred properly :)

but i'll start another thread on these topics since we cant seem to
find a way to push this crap into our driver ... we have to tweak a
few common pieces of code with Blackfin ifdefs :(
-mike
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