gpio: constify opaque pointer "data" in gpio_device_find()

The opaque pointer "data" in each match function used by
gpio_device_find() is a pointer to const, thus the same argument passed
to gpio_device_find() can adjusted similarly.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 02be0ba1a402a3cfd0dcb3005c77d3b77f754266..e4dd13d81b4d8c40ef59f4353339c80752a529d7 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1171,7 +1171,7 @@ EXPORT_SYMBOL_GPL(gpiochip_remove);
  * If the function returns non-NULL, the returned reference must be freed by
  * the caller using gpio_device_put().
  */
-struct gpio_device *gpio_device_find(void *data,
+struct gpio_device *gpio_device_find(const void *data,
                                     int (*match)(struct gpio_chip *gc,
                                                  const void *data))
 {

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 9d0023f83a5733e3e6fd83191c9d8e47136625f5..9c1fbfaebaa80aeb417197ce0b7dde80f056854f 100644 (file)
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -628,7 +628,7 @@ int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip *gc,
                                    void *data, struct lock_class_key *lock_key,
                                    struct lock_class_key *request_key);
 
-struct gpio_device *gpio_device_find(void *data,
+struct gpio_device *gpio_device_find(const void *data,
                                int (*match)(struct gpio_chip *gc,
                                             const void *data));
 struct gpio_device *gpio_device_find_by_label(const char *label);