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gpio: grgpio: Make irq_chip immutable

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

Constify grgpio_irq_chip, 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-v1-2-639377c98288@nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Peng Fan 2025-05-09 12:45:33 +08:00 • committed by Bartosz Golaszewski
parent 7b04f98027
commit a30be40bf1
1 changed files with 6 additions and 1 deletions
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7
drivers/gpio/gpio-grgpio.c
View file

@ -170,6 +170,8 @@ static void grgpio_irq_mask(struct irq_data *d)
grgpio_set_imask(priv, offset, 0);
raw_spin_unlock_irqrestore(&priv->gc.bgpio_lock, flags);
gpiochip_disable_irq(&priv->gc, d->hwirq);
}
static void grgpio_irq_unmask(struct irq_data *d)
@ -178,6 +180,7 @@ static void grgpio_irq_unmask(struct irq_data *d)
int offset = d->hwirq;
unsigned long flags;
gpiochip_enable_irq(&priv->gc, d->hwirq);
raw_spin_lock_irqsave(&priv->gc.bgpio_lock, flags);
grgpio_set_imask(priv, offset, 1);
@ -185,11 +188,13 @@ static void grgpio_irq_unmask(struct irq_data *d)
raw_spin_unlock_irqrestore(&priv->gc.bgpio_lock, flags);
}
static struct irq_chip grgpio_irq_chip = {
static const struct irq_chip grgpio_irq_chip = {
.name = "grgpio",
.irq_mask = grgpio_irq_mask,
.irq_unmask = grgpio_irq_unmask,
.irq_set_type = grgpio_irq_set_type,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static irqreturn_t grgpio_irq_handler(int irq, void *dev)