diff --git a/drivers/gpio/rdc321x-gpio.c b/drivers/gpio/rdc321x-gpio.c
index 46c55193b9dba559a801329d773c22cb420e8b6d..e344907da5b0b76c3ed090a63e4875d56cd21e7d 100644
--- a/drivers/gpio/rdc321x-gpio.c
+++ b/drivers/gpio/rdc321x-gpio.c
@@ -27,6 +27,7 @@
 #include <linux/pci.h>
 #include <linux/gpio.h>
 #include <linux/mfd/rdc321x.h>
+#include <linux/slab.h>
 
 struct rdc321x_gpio {
 	spinlock_t		lock;