diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c
index 818ad56..a5534b1 100644
--- a/drivers/misc/cros_ec.c
+++ b/drivers/misc/cros_ec.c
@@ -25,6 +25,7 @@
 #include <log.h>
 #include <malloc.h>
 #include <spi.h>
+#include <linux/delay.h>
 #include <linux/errno.h>
 #include <asm/io.h>
 #include <asm-generic/gpio.h>