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Commit fab28b89 authored by Johan Hovold's avatar Johan Hovold Committed by Linus Walleij
Browse files

gpio: clean up gpiochip_remove 



Clean up gpiochip_remove somewhat and only output warning about removing
chip with GPIOs requested once.

Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Reviewed-by: default avatarAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 8becdc18

drivers/gpio/gpiolib.c

+9 −5
Original line number Diff line number Diff line
@@ -325,8 +325,10 @@ static void gpiochip_free_hogs(struct gpio_chip *chip); 
 */

void gpiochip_remove(struct gpio_chip *chip)

{

	struct gpio_desc *desc;

	unsigned long	flags;

	unsigned	id;

	bool		requested = false;



	gpiochip_unexport(chip);
@@ -339,15 +341,17 @@ void gpiochip_remove(struct gpio_chip *chip) 


	spin_lock_irqsave(&gpio_lock, flags);

	for (id = 0; id < chip->ngpio; id++) {

		if (test_bit(FLAG_REQUESTED, &chip->desc[id].flags))

			dev_crit(chip->dev, "REMOVING GPIOCHIP WITH GPIOS STILL REQUESTED\n");

		desc = &chip->desc[id];

		desc->chip = NULL;

		if (test_bit(FLAG_REQUESTED, &desc->flags))

			requested = true;

	}

	for (id = 0; id < chip->ngpio; id++)

		chip->desc[id].chip = NULL;



	list_del(&chip->list);

	spin_unlock_irqrestore(&gpio_lock, flags);



	if (requested)

		dev_crit(chip->dev, "REMOVING GPIOCHIP WITH GPIOS STILL REQUESTED\n");



	kfree(chip->desc);

	chip->desc = NULL;

}