Re: [Bugme-new] [Bug 7444] New: BUG on drive removal with pata_cmd64x

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Ar Mer, 2006-11-01 am 12:02 -0800, ysgrifennodd Andrew Morton:
> Dunno if this is a scsi thing or an Alan thing.  But it is certainly a
> thing!
> > and driver hangs in a non-functional state (neither removed nor active)
> > HOWEVER,
> > going to /sys/bus/scsi/devices/X:0:0:0/ and echo'ing 1 to delete triggers the
> > same BUG; the drive disappears from the system correctly(!) and pata_cmd64x can
> > be removed from system without further problems.

It actually looks like a refcounting problem - could be in the SCSI code
or in the libata code or in the AHCI code. I don't think it's in the
driver however as the drivers don't carry custom code in that area

> > On a subsequent docking, the drive affected by the above bug appears to be
> > confused and kernel complains about not being able to identify the drive,
> > however, after a few attempts it manages to reset the drive.
> > 

That I think I understand assuming the first time you booted with the
drive plugged in ?

Alan
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