diff --git a/arch/arm/mach-mxs/ocotp.c b/arch/arm/mach-mxs/ocotp.c
index 65157a35dbba351d6751bdcb4ee483e37b25ee88..54add60f94c98c5d8d15c119e996395a13b6fc86 100644
--- a/arch/arm/mach-mxs/ocotp.c
+++ b/arch/arm/mach-mxs/ocotp.c
@@ -16,6 +16,8 @@
 #include <linux/err.h>
 #include <linux/mutex.h>
 
+#include <asm/processor.h>	/* for cpu_relax() */
+
 #include <mach/mxs.h>
 
 #define OCOTP_WORD_OFFSET		0x20