diff --git a/drivers/ssb/pcmcia.c b/drivers/ssb/pcmcia.c
index 7c773603b402..b6abee846f02 100644
--- a/drivers/ssb/pcmcia.c
+++ b/drivers/ssb/pcmcia.c
@@ -10,6 +10,7 @@
 
 #include <linux/ssb/ssb.h>
 #include <linux/delay.h>
+#include <linux/io.h>
 
 #include <pcmcia/cs_types.h>
 #include <pcmcia/cs.h>