Re: Problem, irq 23: nobody cared (try booting with the "irqpoll" option)

[Akkana Peck <akkana@xxxxxxxxxxxxxx>]

Alan Stern writes:
> On Sat, 14 Jul 2007, Akkana Peck wrote:
> > irq 9: nobody cared (try booting with the "irqpoll" option)
> ...
> > handlers:
> > [<c02c1e50>] (ohci_irq_handler+0x0/0x920)
> > [<c02d2910>] (yenta_interrupt+0x0/0xe0)
> > [<c02d8ab0>] (usb_hcd_irq+0x0/0x60)
> > Disabling IRQ #9
> 
> You must have a copy of ohci-hcd left over from somewhere.  Perhaps you 
> need to do clean rebuild and re-install.

I did some experiments. I tried a clean rebuild, but while I was
grepping to make sure I had no OHCI remnants, I noticed that
CONFIG_IEEE1394_OHCI1394 was still set, so I tested both with
and without that.

It turns out that was the problem. That "ohci_irq_handler" message
apparently isn't referring to USB OHCI after all (I'm fairly sure
that's never been enabled in this kernel tree -- it's been 4 years
since I owned a machine that used OHCI). It was referring to
the Firewire OHCI1394 controller.

So this probably belongs as a bug report against 1394 and probably
isn't a USB problem, at least on my machine. And it looks like
Dylan, the original poster, also has Firewire. I don't use Firewire
so I'm perfectly happy disabling it, and meanwhile I'll take this to
the appropriate Firewire list.

Thanks!

	...Akkana

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