diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index 0b1b52168bb705204dc91dc04c3a9c2246eaf694..5e583cf387862744c0352bbd890b45eb4ee74d8e 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -158,7 +158,7 @@ get_pci_irq_from_of(struct pci_controller *hose, int slot, int pin)
 
 	laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(slot, 0) << 8);
 	laddr[1] = laddr[2] = 0;
-	of_irq_map_raw(hosenode, &pin, laddr, &oirq);
+	of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
 	DBG("mpc86xx_hpcn: pci irq addr %x, slot %d, pin %d, irq %d\n",
 			laddr[0], slot, pin, oirq.specifier[0]);
 	return oirq.specifier[0];