Commit 3b7c7478 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Bartosz Golaszewski
Browse files

gpiolib: Provide to_gpio_device() helper 



Provide to_gpio_device() helper which can be utilized in the existing
and future code.

While at it, make sure it becomes no-op at compilation time.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent 4ef339bc

drivers/gpio/gpiolib.c

+1 −1
Original line number Diff line number Diff line
@@ -549,7 +549,7 @@ EXPORT_SYMBOL_GPL(gpiochip_line_is_valid); 


static void gpiodevice_release(struct device *dev)

{

	struct gpio_device *gdev = container_of(dev, struct gpio_device, dev);

	struct gpio_device *gdev = to_gpio_device(dev);

	unsigned long flags;



	spin_lock_irqsave(&gpio_lock, flags);

drivers/gpio/gpiolib.h

+7 −2
Original line number Diff line number Diff line
@@ -20,9 +20,9 @@ 


/**

 * struct gpio_device - internal state container for GPIO devices

 * @id: numerical ID number for the GPIO chip

 * @dev: the GPIO device struct

 * @chrdev: character device for the GPIO device

 * @id: numerical ID number for the GPIO chip

 * @mockdev: class device used by the deprecated sysfs interface (may be

 * NULL)

 * @owner: helps prevent removal of modules exporting active GPIOs
@@ -47,9 +47,9 @@ 
 * userspace.

 */

struct gpio_device {

	int			id;

	struct device		dev;

	struct cdev		chrdev;

	int			id;

	struct device		*mockdev;

	struct module		*owner;

	struct gpio_chip	*chip;
@@ -72,6 +72,11 @@ struct gpio_device { 
#endif

};



static inline struct gpio_device *to_gpio_device(struct device *dev)

{

	return container_of(dev, struct gpio_device, dev);

}



/* gpio suffixes used for ACPI and device tree lookup */

static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" };