Re: 2.6.23-rc9-git4: pata_pcmcia,disabling IRQ #9 and Re: libata and legacy ide pcmcia failure

[Peter F. Patel-Schneider]

Alan Cox wrote:
> On Fri, 21 Mar 2008 10:38:31 +0900
> Tejun Heo <htejun@xxxxxxxxx> wrote:
>
>   
> > Alan Cox wrote:
> >     
> > > O> Mar 20 19:51:45 idefix kernel: ata12: PATA max PIO0 cmd 0xa100 ctl 
> > >       
> > > > 0xa10e irq 3
> > > > Mar 20 19:52:15 idefix kernel: ata12.00: qc timeout (cmd 0x91)
> > > > Mar 20 19:52:15 idefix kernel: ata12.00: failed to IDENTIFY 
> > > > (INIT_DEV_PARAMS failed, err_mask=0x4)
> > > >         
> > > Thinkpad T61p .. I've seen a few of these.
> > >
> > > Firstly try the card and adapter in a different PC and let me know if
> > > that works. So far they do. If that is the case get the latest firmware
> > > updates (BIOS etc) for your thinkpad and see if the problem goes away.
> > > They (or our ACPI code I guess it may be) have some serious IRQ routing
> > > problems on this box.
> > >       
> > Any chance the thing just chokes up on INIT_DEV_PARAMS?
> >     
>
> Possibly but I've seen several previosu reports showing no IRQ being
> delivered off these machines. You get IRQ 3 reported as assigned and an
> IRQ 9 turns up.
>
> Alan
>
>   

Also, these devices used to work about a year ago (same machine, earlier 
kernel) and then stopped working. 

It is entirely possible that some change triggered a BIOS(?) bug, or 
even that a BIOS upgrade caused the breakage, of course.

I'll try to try out the hardware in another Linux box - it may take a 
while, as I have to find out who at work has liberated their machine 
from corporate IT.  :-)

peter

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