Re: [PATCH] pata_ali: Lots of problems still showing up with small ATAPI DMA

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On Wed, 28 Nov 2007 10:36:15 +0900
Tejun Heo <htejun@xxxxxxxxx> wrote:

> Alan Cox wrote:
> > Hopefully there is a better long term solution but for now lets favour
> > reliability.
> 
> I'm getting a lot of reports on pata_ali w/ misc ATAPI commands too.  Do
> you know whether it's a controller problem or drive one?  All the
> reports I got are laptops and I can't really ask them to disassemble
> their laptops.  :-)

ALi is one that most definitely appears to be controller related. Thats
why I sent Jeff a patch to use DMA for 2K+ transfers only. Some ALi also
required the patch to set the xfer lengths.

Its only some revs/combinations annoyingly - a lot of them (including the
ones I have direct access too) just work.

Alan
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