diff --git a/include/linux/irq.h b/include/linux/irq.h
index 76e948f..a10717e 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -382,6 +382,7 @@
 
 extern void irq_cpu_online(void);
 extern void irq_cpu_offline(void);
+extern int __irq_set_affinity_locked(struct irq_data *data,  const struct cpumask *cpumask);
 
 #ifdef CONFIG_GENERIC_HARDIRQS