diff --git a/include/asm-um/archparam-ppc.h b/include/asm-um/archparam-ppc.h
index 172cd6f..4269d8a 100644
--- a/include/asm-um/archparam-ppc.h
+++ b/include/asm-um/archparam-ppc.h
@@ -1,15 +1,6 @@
 #ifndef __UM_ARCHPARAM_PPC_H
 #define __UM_ARCHPARAM_PPC_H
 
-/********* Bits for asm-um/hw_irq.h **********/
-
-struct hw_interrupt_type;
-
-/********* Bits for asm-um/hardirq.h **********/
-
-#define irq_enter(cpu, irq) hardirq_enter(cpu)
-#define irq_exit(cpu, irq) hardirq_exit(cpu)
-
 /********* Bits for asm-um/string.h **********/
 
 #define __HAVE_ARCH_STRRCHR