diff -urN RC7/arch/i386/pci/irq.c RC7-current/arch/i386/pci/irq.c
--- RC7/arch/i386/pci/irq.c	Wed Jun 16 10:26:07 2004
+++ RC7-current/arch/i386/pci/irq.c	Tue Jun 22 19:40:53 2004
@@ -1000,7 +1000,7 @@
 	/* VIA bridges use interrupt line for apic/pci steering across
 	   the V-Link */
 	else if (interrupt_line_quirk)
-		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq & 15);
 	return 0;
 }