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

[Lukasz Kosewski <lkosewsk@nit.ca>]

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