diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c
index d5ce53491efba6e8ba60177fcf8bbe022ebf3252..153b3f3cc795fdd5b7d0e31ff5a18043b738b4c8 100644
--- a/drivers/sfi/sfi_core.c
+++ b/drivers/sfi/sfi_core.c
@@ -68,6 +68,7 @@
 #include <linux/init.h>
 #include <linux/sfi.h>
 #include <linux/slab.h>
+#include <linux/io.h>
 
 #include "sfi_core.h"