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SubjectRe: system hang on HDIO_DRIVE_RESET! help!
Alan Cox wrote:

> On Fri, 2003-02-28 at 05:04, wrote:
> > > Does this still occur on 2.4.21pre. It should be fixed now
> >
> > I had tested 'hdparm -w /dev/hda' under 2.4.21-pre4, but problem sill exist,
> >
> > just same message as in 2.4.20.
> What controller are you using and I'll look into it a bit further

Intel 82801AA host controller, and I found when I disabled DMA before doing
drive reset, system wouldn't hang at most time. It seemed not tight related with

host chip, does it?


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