diff --git a/drivers/char/random.c b/drivers/char/random.c
index a778918c8f4282419d585b5acf55aa8ec6adeda3..7c43ae782b26e385e1b0c96efacd7e82846b794b 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -241,6 +241,10 @@
 #include <linux/percpu.h>
 #include <linux/cryptohash.h>
 
+#ifdef CONFIG_GENERIC_HARDIRQS
+# include <linux/irq.h>
+#endif
+
 #include <asm/processor.h>
 #include <asm/uaccess.h>
 #include <asm/irq.h>