diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 9e0fefd..70741e1 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -7,32 +7,13 @@
 #include <linux/bitops.h>
 #include <linux/preempt.h>
 #include <linux/cpumask.h>
+#include <linux/irqreturn.h>
 #include <linux/hardirq.h>
 #include <linux/sched.h>
 #include <asm/atomic.h>
 #include <asm/ptrace.h>
 #include <asm/system.h>
 
-/*
- * For 2.4.x compatibility, 2.4.x can use
- *
- *	typedef void irqreturn_t;
- *	#define IRQ_NONE
- *	#define IRQ_HANDLED
- *	#define IRQ_RETVAL(x)
- *
- * To mix old-style and new-style irq handler returns.
- *
- * IRQ_NONE means we didn't handle it.
- * IRQ_HANDLED means that we did have a valid interrupt and handled it.
- * IRQ_RETVAL(x) selects on the two depending on x being non-zero (for handled)
- */
-typedef int irqreturn_t;
-
-#define IRQ_NONE	(0)
-#define IRQ_HANDLED	(1)
-#define IRQ_RETVAL(x)	((x) != 0)
-
 struct irqaction {
 	irqreturn_t (*handler)(int, void *, struct pt_regs *);
 	unsigned long flags;