diff --git a/drivers/gpio/rdc321x-gpio.c b/drivers/gpio/rdc321x-gpio.c
index 46c55193b9db..e344907da5b0 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;