diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index 60ab4c44d30557b285a90cc28e7b8ae1dd2ca21a..7c246b69c5458344fb1dc7b03c79d54fef53f528 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -11,6 +11,7 @@
  * as published by the Free Software Foundation; either version
  * 2 of the License, or (at your option) any later version.
  */
+#include <linux/cpu.h>
 #include <linux/export.h>
 #include <linux/init.h>
 #include <linux/irqflags.h>