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From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: VIA PCI routing problem
Date: Thu, 28 Jul 2005 09:37:33 -0600
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On Thursday 28 July 2005 6:10 am, Nick Piggin wrote:
> I have a VIA SMP system and somewhere between 2.6.12-rc3 and 2.6.12
> the USB mouse started moving around really slowly. Anyway, it turns
> out that the attached patch (against 2.6.13-rc3-git8) fixes the problem.

Can you try this:

Index: work/drivers/pci/quirks.c
===================================================================
--- work.orig/drivers/pci/quirks.c	2005-07-25 15:04:26.000000000 -0600
+++ work/drivers/pci/quirks.c	2005-07-28 09:26:09.000000000 -0600
@@ -503,7 +503,7 @@
 
 	new_irq = dev->irq & 0xf;
 	pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
-	if (new_irq != irq) {
+	if (1 || new_irq != irq) {
 		printk(KERN_INFO "PCI: Via IRQ fixup for %s, from %d to %d\n",
 			pci_name(dev), irq, new_irq);
 		udelay(15);	/* unknown if delay really needed */


If that doesn't help, remove it and see if this does:

Index: work/drivers/pci/quirks.c
===================================================================
--- work.orig/drivers/pci/quirks.c	2005-07-25 15:04:26.000000000 -0600
+++ work/drivers/pci/quirks.c	2005-07-28 09:27:23.000000000 -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


Can you also include "lspci" output?