[PATCH] Cyrix irq router tweak

Another small change from 2.4

arch/i386/kernel/pci-irq.c

@@ -245,12 +245,12 @@ static int pirq_opti_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
  */
 static int pirq_cyrix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
 {
-	return read_config_nybble(router, 0x5C, pirq-1);
+	return read_config_nybble(router, 0x5C, (pirq-1)^1);
 }
 
 static int pirq_cyrix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
 {
-	write_config_nybble(router, 0x5C, pirq-1, irq);
+	write_config_nybble(router, 0x5C, (pirq-1)^1, irq);
 	return 1;
 }