Re: sata_nv + ADMA + Samsung disk problem

[Robert Hancock]

Allen Martin wrote:
>  
> > > Dunno about the NVidia version.
> > Theirs works rather differently - the GO bit is there, but there's 
> > another append register which is used to tell the controller 
> > that a new 
> > tag has been added to the CPB list.
> >
> > The only thing we currently use the GO bit for is to switch 
> > between ADMA 
> > and port register mode. Could be there's something we need to 
> > do there, 
> > though, who knows..
>
> You shouldn't ever need to touch GO other than the ADMA / legacy mode
> switch as you say.
>
> The NVIDIA ADMA hw is not based on the Pacific Digital core.

Gabor, I just noticed you said that it worked OK in 2.6.20, yet 2.6.22 
fails. 2.6.20 had ADMA support as well, so I wonder what change started 
causing the problem. Would it be possible for you to do a git bisect (or 
at least try 2.6.21 to try and narrow it down)?
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