Re: SCSI aic7xxx driver: Initialization Failure over a kdump reboot

[Lukasz Kosewski]

Lukasz Kosewski wrote:
> Andrew Morton wrote:
>
> > > looks like the following is happening:
> > > the controller wants to send an irq (probably from previous life)
> > > then suddenly the driver gets loaded
> > > * which registers an irq handler
> > > * which does pci_enable_device()
> > > and .. the irq goes through. the irq handler just is not yet 
> > > expecting this irq, so
> > > returns "uh dunno not mine"
> > > the kernel then decides to disable the irq on the apic level
> > > and then the driver DOES need an irq during init
> > > ... which never happens.
> >
> >
> > yes, that's exactly what e100 was doing on my laptop last month.  Fixed
> > that by arranging for the NIC to be reset before the call to
> > pci_set_master().

After reading this again when I /wasn't/ semi-comatose, I retract my 
statement insofar as it wouldn't help you (but I think it's still rather 
necessary) :)

The system did exactly what I'm talking about (which it didn't do for 
me, possibly because the board/processor didn't support APIC).  I guess 
my question to you is:  do you have other devices sharing this 
interrupt?  In other words, are you /sure/ that it's the adaptec 
controller which is setting the interrupt line high?

Luke Kosewski
Human Cannonball
Net Integration Technologies
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