linux-kernel - [PATCH] pinctrl: nuvoton: wpcm450: Convert irqchip to IRQCHIP

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Date:   Mon,  6 Jun 2022 23:43:00 +0200
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     linux-gpio@...r.kernel.org
Cc:     Marc Zyngier <maz@...nel.org>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Linus Walleij <linus.walleij@...aro.org>,
        openbmc@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH] pinctrl: nuvoton: wpcm450: Convert irqchip to IRQCHIP_IMMUTABLE

Commit 6c846d026d490 ("gpio: Don't fiddle with irqchips marked as
immutable") added a warning for irqchips that are not marked with
IRQCHIP_IMMUTABLE.

Convert the pinctrl-wpcm450 driver to an immutable irqchip.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---
 drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
index 0dbeb91f0bf27..cff784a7ce4d7 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
@@ -293,6 +293,8 @@ static const struct irq_chip wpcm450_gpio_irqchip = {
 	.irq_unmask = wpcm450_gpio_irq_unmask,
 	.irq_mask = wpcm450_gpio_irq_mask,
 	.irq_set_type = wpcm450_gpio_set_irq_type,
+	.flags = IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };

 static void wpcm450_gpio_irqhandler(struct irq_desc *desc)
@@ -1068,9 +1070,8 @@ static int wpcm450_gpio_register(struct platform_device *pdev,
 		gpio->gc.fwnode = child;
 		gpio->gc.add_pin_ranges = wpcm450_gpio_add_pin_ranges;

-		gpio->irqc = wpcm450_gpio_irqchip;
 		girq = &gpio->gc.irq;
-		girq->chip = &gpio->irqc;
+		gpio_irq_chip_set_chip(girq, &wpcm450_gpio_irqchip);
 		girq->parent_handler = wpcm450_gpio_irqhandler;
 		girq->parents = devm_kcalloc(dev, WPCM450_NUM_GPIO_IRQS,
 					     sizeof(*girq->parents), GFP_KERNEL);
--
2.35.1