diff --git a/include/asm-m68knommu/irq.h b/include/asm-m68knommu/irq.h
index 45e7a2fd168..7b8f874f842 100644
--- a/include/asm-m68knommu/irq.h
+++ b/include/asm-m68knommu/irq.h
@@ -86,5 +86,6 @@ extern void (*mach_disable_irq)(unsigned int);
 #define enable_irq(x)	do { } while (0)
 #define disable_irq(x)	do { } while (0)
 #define disable_irq_nosync(x)	disable_irq(x)
+#define irq_canonicalize(irq)	(irq)
 
 #endif /* _M68K_IRQ_H_ */