Re: unable to set udma >= 3 on ich5 on 2.6.11

["Rafael Espíndola" <rafael.espindola@gmail.com>]

> To me it seems that there are two implementations of the 80cc ribbon
> detection in the kernel - one is the "standard" and the other one is the
> one that some drives actually implement? Or how is that? Maybe it would be
> good to make the default setting to "true" in the kernel config or rather
> just put some more emphasized hint about this in some docs where people
> bump into it more easily? It is true that the help text of the config
> parameter tells exactly what to do, but otherwise I spent a long time
> investigating this problem before finding the "obvious", and I guess I'm
> not alone.
> 
No. You aren't alone. If all chipsets supported by the same driver
(piix.c for example) use the same algorithm then the there could be
two variation of eighty_ninty_three and each driver could use the
correct one. If this is not the case, a Documentation/UDMA.txt with a
black list would be wonderfull.

Rafael