[Fwd: Re: libata and legacy ide pcmcia failure]

[Robert de Rooy <robert.de.rooy@gmail.com>]

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Oops had done a reply instead of a reply to all...


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From: Robert de Rooy <robert.de.rooy@gmail.com>
To: albertl@mail.com
Subject: Re: libata and legacy ide pcmcia failure
Date: Mon, 25 Jun 2007 13:38:35 +0200
Message-ID: <467FA93B.6010403@gmail.com>

Albert Lee wrote:
> The patch just workarounds the "lost irq" problem by polling; not real
> fix. We still need to find out why irq is lost per Mark's comment:
>
> "This proves that the device does work correctly in most respects
> except for interrupt delivery.  The status bits are working and
> it can be probed for, configured, and used."
>
> "So, next step might be to try and understand the interrupt mis-delivery
> problem some more.   I've lost the history of the original issue,
> but we now know that everything except the actual interrupt seems good."
>
> I am not familiar with the PCMCIA interrupt delivery. It seems the
> "Dazzle 4in1 Card Adapter" works under windows but somehow lost irq
> under both IDE and libata. Maybe Alan/Bart or the PCMCIA developers
> know better...
> --
> albert

I see. So this is not the ideal fix for this problem. Anything else I 
can do to debug the irq lost issue? perhaps add some debug to the pcmcia 
code?

For what its worth, I compiled a clean 2.6.22-rc5 with just the 
pio_polling patch added, and that allows me to mount the device without 
any errors in syslog. So the 
disable-dev_init_param-and-setxfermode-for-CFA.patch is not needed.



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