Re: SMP+irq handling broken in current git?

From: Bjorn Helgaas
Date: Thu Jun 23 2005 - 14:07:44 EST


On Thursday 23 June 2005 12:42 pm, Jens Axboe wrote:
> On Thu, Jun 23 2005, Jeff Garzik wrote:
> > Jens Axboe wrote:
> > >Hi,
> > >
> > >Something strange is going on with current git as of this morning (head
> > >ee98689be1b054897ff17655008c3048fe88be94). On an old test box (dual p3
> > >800MHz), using the same old config I always do on this box has very
> > >broken interrupt handling:
> >
> > Does 2.6.12 work for you?
> > 2.6.11?
>
> 2.6.11 works, 2.6.12 does not.

Do you have any VIA devices? If so, you might try the attached.
(Just for debugging; if the patch helps, I have no idea how to
do it correctly.)
Index: work/drivers/pci/quirks.c
===================================================================
--- work.orig/drivers/pci/quirks.c 2005-06-21 13:43:29.000000000 -0600
+++ work/drivers/pci/quirks.c 2005-06-23 10:40:55.000000000 -0600
@@ -510,7 +510,7 @@
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
}
}
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irq);
+DECLARE_PCI_FIXUP_ENABLE(PCI_ANY_ID, PCI_ANY_ID, quirk_via_irq);

/*
* PIIX3 USB: We have to disable USB interrupts that are