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SubjectRe: IRQ Routing Problem on ALi Chipset Laptop (HP Pavilion N5425)
Hi!

> > The patch should contain:
> >
> >
> > > The "honor the irq mask" approach (works on my machine):
> > > --- /home/cbell/linux-2.4/arch/i386/kernel/pci-irq.c Fri Dec 7 01:51:41 2001
> > > +++ /home/cbell/linux-2.4-test/arch/i386/kernel/pci-irq.c Sat Dec 8 21:04:37 2001
> > > @@ -581,6 +581,7 @@
> > > * reported by the device if possible.
> > > */
> > > newirq = dev->irq;
> > > + if (!((1 << newirq) & mask)) newirq = 0;
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > printk(KERN_ERR "$PIR table inconsistent; chipset dependend code told
> > us interrupt is at %d, but irq mask is %lx\n", dev->irq, newirq);
> >
> > We should never ever workaround BIOS problem without complaining.
>
> It may not be a bios problem. mask = (info->irq[pin].bitmap &
> pcibios_irq_mask). So an IRQ might not match the mask because the user
> specified a more restrictive mask than the $PIR table.

Okay, so it might be user error, but it is worth a printk, for sure.

> > Otherwise patch looks sane. Did you try submitting it to
> > linus/marcelo?
>
> Not yet. Wanted to do a bit more testing, especially considering the
> pcmcia problems people have had. Do your pcmcia difficulties occur
> without the patch, as well?

Yep. That machine was always touchy w.r.t. pcmcia.

Pavel
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