diff --git a/drivers/staging/greybus/raw.c b/drivers/staging/greybus/raw.c
index eb43acc91e66..515c1877bc7f 100644
--- a/drivers/staging/greybus/raw.c
+++ b/drivers/staging/greybus/raw.c
@@ -13,6 +13,7 @@
 #include <linux/cdev.h>
 #include <linux/fs.h>
 #include <linux/idr.h>
+#include <linux/uaccess.h>
 
 #include "greybus.h"