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Commit ca620f2d authored by Hans Verkuil's avatar Hans Verkuil Committed by Linus Walleij
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gliolib: set hooks in gpiochip_set_irq_hooks() 



Centralize setting the irq_request/release_resources callbacks
in one function since we'll be adding more callbacks to that.

Also fix the removal of the callback overrides: this should
only be done if we actually installed our own callback there.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 4e6b8238

drivers/gpio/gpiolib.c

+21 −24
Original line number Diff line number Diff line
@@ -1826,6 +1826,17 @@ static void gpiochip_irq_relres(struct irq_data *d) 
	gpiochip_relres_irq(chip, d->hwirq);

}



static void gpiochip_set_irq_hooks(struct gpio_chip *gpiochip)

{

	struct irq_chip *irqchip = gpiochip->irq.chip;



	if (!irqchip->irq_request_resources &&

	    !irqchip->irq_release_resources) {

		irqchip->irq_request_resources = gpiochip_irq_reqres;

		irqchip->irq_release_resources = gpiochip_irq_relres;

	}

}



/**

 * gpiochip_add_irqchip() - adds an IRQ chip to a GPIO chip

 * @gpiochip: the GPIO chip to add the IRQ chip to
@@ -1884,16 +1895,6 @@ static int gpiochip_add_irqchip(struct gpio_chip *gpiochip, 
	if (!gpiochip->irq.domain)

		return -EINVAL;



	/*

	 * It is possible for a driver to override this, but only if the

	 * alternative functions are both implemented.

	 */

	if (!irqchip->irq_request_resources &&

	    !irqchip->irq_release_resources) {

		irqchip->irq_request_resources = gpiochip_irq_reqres;

		irqchip->irq_release_resources = gpiochip_irq_relres;

	}



	if (gpiochip->irq.parent_handler) {

		void *data = gpiochip->irq.parent_handler_data ?: gpiochip;
@@ -1909,6 +1910,8 @@ static int gpiochip_add_irqchip(struct gpio_chip *gpiochip, 
		}

	}



	gpiochip_set_irq_hooks(gpiochip);



	acpi_gpiochip_request_interrupts(gpiochip);



	return 0;
@@ -1922,11 +1925,12 @@ static int gpiochip_add_irqchip(struct gpio_chip *gpiochip, 
 */

static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip)

{

	struct irq_chip *irqchip = gpiochip->irq.chip;

	unsigned int offset;



	acpi_gpiochip_free_interrupts(gpiochip);



	if (gpiochip->irq.chip && gpiochip->irq.parent_handler) {

	if (irqchip && gpiochip->irq.parent_handler) {

		struct gpio_irq_chip *irq = &gpiochip->irq;

		unsigned int i;
@@ -1950,11 +1954,12 @@ static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip) 
		irq_domain_remove(gpiochip->irq.domain);

	}



	if (gpiochip->irq.chip) {

		gpiochip->irq.chip->irq_request_resources = NULL;

		gpiochip->irq.chip->irq_release_resources = NULL;

		gpiochip->irq.chip = NULL;

	if (irqchip &&

	    irqchip->irq_request_resources == gpiochip_irq_reqres) {

		irqchip->irq_request_resources = NULL;

		irqchip->irq_release_resources = NULL;

	}

	gpiochip->irq.chip = NULL;



	gpiochip_irqchip_free_valid_mask(gpiochip);

}
@@ -2043,15 +2048,7 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip, 
		return -EINVAL;

	}



	/*

	 * It is possible for a driver to override this, but only if the

	 * alternative functions are both implemented.

	 */

	if (!irqchip->irq_request_resources &&

	    !irqchip->irq_release_resources) {

		irqchip->irq_request_resources = gpiochip_irq_reqres;

		irqchip->irq_release_resources = gpiochip_irq_relres;

	}

	gpiochip_set_irq_hooks(gpiochip);



	acpi_gpiochip_request_interrupts(gpiochip);