[EMAIL PROTECTED] said:
> More problematic is that if I stick such prinks into arch/i386/kernel/
> irq.c handle_IRQ_event(), that stops seeing interrupts too ... even
> timer irqs. They happen right up to the point of lockup though.
At this point (in fact long before this) I would get out the o'scope
and the PCI extender. Is the board locked up? The symptom here would
be an infinite stream of stopped transactions to the device in question.
Infinite retries can lock up a system pretty badly. This is pretty easy
to see with the scope.
Also, you can use the scope (and a PCI extender) to show absolutely
conclusively whether or not the board is generating an interrupt.
Hell, you can use a logic probe for that.
Perhaps having test equipment has spoiled me:-)
--
Steve Williams "The woods are lovely, dark and deep.
[EMAIL PROTECTED] But I have promises to keep,
[EMAIL PROTECTED] and lines to code before I sleep,
http://www.picturel.com And lines to code before I sleep."
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