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gpio: mpc8xxx: Make irq_chip immutable

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

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-v1-4-639377c98288@nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Peng Fan 2025-05-09 12:45:35 +08:00 • committed by Bartosz Golaszewski
parent 289e42df13
commit 7688a54d5b
1 changed files with 8 additions and 0 deletions
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8
drivers/gpio/gpio-mpc8xxx.c
View file

@ -123,9 +123,12 @@ static irqreturn_t mpc8xxx_gpio_irq_cascade(int irq, void *data)
static void mpc8xxx_irq_unmask(struct irq_data *d)
{
struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct gpio_chip *gc = &mpc8xxx_gc->gc;
unsigned long flags;
gpiochip_enable_irq(gc, hwirq);
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR,
@ -138,6 +141,7 @@ static void mpc8xxx_irq_unmask(struct irq_data *d)
static void mpc8xxx_irq_mask(struct irq_data *d)
{
struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct gpio_chip *gc = &mpc8xxx_gc->gc;
unsigned long flags;
@ -148,6 +152,8 @@ static void mpc8xxx_irq_mask(struct irq_data *d)
& ~mpc_pin2mask(irqd_to_hwirq(d)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
gpiochip_disable_irq(gc, hwirq);
}
static void mpc8xxx_irq_ack(struct irq_data *d)
@ -244,6 +250,8 @@ static struct irq_chip mpc8xxx_irq_chip = {
.irq_ack = mpc8xxx_irq_ack,
/* this might get overwritten in mpc8xxx_probe() */
.irq_set_type = mpc8xxx_irq_set_type,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static int mpc8xxx_gpio_irq_map(struct irq_domain *h, unsigned int irq,