diff --git a/drivers/misc/mic/cosm/cosm_debugfs.c b/drivers/misc/mic/cosm/cosm_debugfs.c
index 30d953dff4fa..216cb3cd2fe3 100644
--- a/drivers/misc/mic/cosm/cosm_debugfs.c
+++ b/drivers/misc/mic/cosm/cosm_debugfs.c
@@ -21,6 +21,7 @@
 
 #include <linux/debugfs.h>
 #include <linux/slab.h>
+#include <linux/io.h>
 #include "cosm_main.h"
 
 /* Debugfs parent dir */