--- zzzz-none-000/linux-2.6.32.61/drivers/pci/setup-irq.c	2013-06-10 09:43:48.000000000 +0000
+++ virian-300e-630/linux-2.6.32.61/drivers/pci/setup-irq.c	2011-10-11 14:19:49.000000000 +0000
@@ -34,7 +34,7 @@
 
 	pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
 	/* Cope with illegal. */
-	if (pin > 4)
+	if ((pin == 0) || (pin > 4))
 		pin = 1;
 
 	if (pin != 0) {