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gpio: davinci: Make irq_chip immutable

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Kernel warns about mutable irq_chips:
"not an immutable chip, please consider fixing!"

Constify gpio_irqchip, flag the irq_chip as IRQCHIP_IMMUTABLE, add the
new helper functions, and call the appropriate gpiolib functions.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250509-gpio-v1-6-639377c98288@nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Peng Fan 2025-05-09 12:45:37 +08:00 • committed by Bartosz Golaszewski
parent 62be72bdb0
commit 3f50bb3124
1 changed files with 7 additions and 2 deletions
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9
drivers/gpio/gpio-davinci.c
View file

@ -253,6 +253,8 @@ static void gpio_irq_mask(struct irq_data *d)
writel_relaxed(mask, &g->clr_falling);
writel_relaxed(mask, &g->clr_rising);
gpiochip_disable_irq(&chips->chip, hwirq);
}
static void gpio_irq_unmask(struct irq_data *d)
@ -263,6 +265,8 @@ static void gpio_irq_unmask(struct irq_data *d)
uintptr_t mask = (uintptr_t)irq_data_get_irq_handler_data(d);
unsigned status = irqd_get_trigger_type(d);
gpiochip_enable_irq(&chips->chip, hwirq);
status &= IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING;
if (!status)
status = IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING;
@ -281,12 +285,13 @@ static int gpio_irq_type(struct irq_data *d, unsigned trigger)
return 0;
}
static struct irq_chip gpio_irqchip = {
static const struct irq_chip gpio_irqchip = {
.name = "GPIO",
.irq_unmask = gpio_irq_unmask,
.irq_mask = gpio_irq_mask,
.irq_set_type = gpio_irq_type,
.flags = IRQCHIP_SET_TYPE_MASKED | IRQCHIP_SKIP_SET_WAKE,
.flags = IRQCHIP_IMMUTABLE | IRQCHIP_SET_TYPE_MASKED | IRQCHIP_SKIP_SET_WAKE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static void gpio_irq_handler(struct irq_desc *desc)