Re: [BUG] libahci returns stale result tf much of the time.

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Hello,

On 10/05/2010 04:06 PM, Mark Lord wrote:
> Yeah, maybe something like that.
> 
> But do note that I have verified that "hdparm -C" does work correctly,
> and is dependent upon correctly returned result_tf values.
> 
> It's not a PIO "data" command, though.  Does it get issued the same way?

PIO Setup FIS is not used for nodata commands.  IIRC, nodata uses D2H
Reg FIS for command completion.  I think the only exception is PIO
data commands.  The weird hack is to satisfy PIO data command protocol
timing requirement stemming from PATA specification.  Eh... ugly.

Thanks.

-- 
tejun
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