diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c
index 5a98499..934462f 100644
--- a/drivers/gpio/gpio-crystalcove.c
+++ b/drivers/gpio/gpio-crystalcove.c
@@ -18,6 +18,7 @@
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
+#include <linux/seq_file.h>
 #include <linux/bitops.h>
 #include <linux/regmap.h>
 #include <linux/mfd/intel_soc_pmic.h>