diff --git a/arch/powerpc/platforms/iseries/irq.h b/arch/powerpc/platforms/iseries/irq.h
index 69f1b437fc7..a1c23607403 100644
--- a/arch/powerpc/platforms/iseries/irq.h
+++ b/arch/powerpc/platforms/iseries/irq.h
@@ -1,9 +1,13 @@
 #ifndef	_ISERIES_IRQ_H
 #define	_ISERIES_IRQ_H
 
+#ifdef CONFIG_PCI
 extern void iSeries_init_IRQ(void);
 extern int  iSeries_allocate_IRQ(HvBusNumber, HvSubBusNumber, u32);
 extern void iSeries_activate_IRQs(void);
+#else
+#define iSeries_init_IRQ	NULL
+#endif
 extern unsigned int iSeries_get_irq(void);
 
 #endif /* _ISERIES_IRQ_H */
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index 37ae07ee54a..0877a883411 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -617,10 +617,6 @@ static void iseries_dedicated_idle(void)
 	}
 }
 
-#ifndef CONFIG_PCI
-void __init iSeries_init_IRQ(void) { }
-#endif
-
 static void __iomem *iseries_ioremap(phys_addr_t address, unsigned long size,
 				     unsigned long flags)
 {