--- zzzz-none-000/linux-3.10.107/include/asm-generic/gpio.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/include/asm-generic/gpio.h	2021-11-10 11:53:56.000000000 +0000
@@ -192,6 +192,9 @@
 
 extern int __gpio_to_irq(unsigned gpio);
 
+extern int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
+extern void gpio_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
+
 extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);
 extern int gpio_request_array(const struct gpio *array, size_t num);
 extern void gpio_free_array(const struct gpio *array, size_t num);
@@ -284,23 +287,26 @@
 
 /* sysfs support is only available with gpiolib, where it's optional */
 
-static inline int gpio_export(unsigned gpio, bool direction_may_change)
+static inline int gpio_export(unsigned gpio __maybe_unused,
+			      bool direction_may_change __maybe_unused)
 {
 	return -ENOSYS;
 }
 
-static inline int gpio_export_link(struct device *dev, const char *name,
-				unsigned gpio)
+static inline int gpio_export_link(struct device *dev __maybe_unused,
+				   const char *name __maybe_unused,
+				   unsigned gpio __maybe_unused)
 {
 	return -ENOSYS;
 }
 
-static inline int gpio_sysfs_set_active_low(unsigned gpio, int value)
+static inline int gpio_sysfs_set_active_low(unsigned gpio __maybe_unused,
+					    int value __maybe_unused)
 {
 	return -ENOSYS;
 }
 
-static inline void gpio_unexport(unsigned gpio)
+static inline void gpio_unexport(unsigned gpio __maybe_unused)
 {
 }
 #endif	/* CONFIG_GPIO_SYSFS */