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gpio: sprd: Make the irqchip immutable 

Make the struct irq_chip const, flag it as IRQCHIP_IMMUTABLE, add the
new helper functions, and call the appropriate gpiolib functions.

Signed-off-by: Cixi Geng <cixi.geng1@unisoc.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Cixi Geng 2022-12-29 22:55:45 +08:00 committed by Bartosz Golaszewski
parent be43eea7de
commit 9883ddf9d6
1 changed files with 6 additions and 3 deletions
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9
drivers/gpio/gpio-sprd.c
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@ -120,6 +120,7 @@ static void sprd_gpio_irq_mask(struct irq_data *data)
u32 offset = irqd_to_hwirq(data);
sprd_gpio_update(chip, offset, SPRD_GPIO_IE, 0);
gpiochip_disable_irq(chip, offset);
}
static void sprd_gpio_irq_ack(struct irq_data *data)
@ -136,6 +137,7 @@ static void sprd_gpio_irq_unmask(struct irq_data *data)
u32 offset = irqd_to_hwirq(data);
sprd_gpio_update(chip, offset, SPRD_GPIO_IE, 1);
gpiochip_enable_irq(chip, offset);
}
static int sprd_gpio_irq_set_type(struct irq_data *data,
@ -205,13 +207,14 @@ static void sprd_gpio_irq_handler(struct irq_desc *desc)
chained_irq_exit(ic, desc);
}
static struct irq_chip sprd_gpio_irqchip = {
static const struct irq_chip sprd_gpio_irqchip = {
.name = "sprd-gpio",
.irq_ack = sprd_gpio_irq_ack,
.irq_mask = sprd_gpio_irq_mask,
.irq_unmask = sprd_gpio_irq_unmask,
.irq_set_type = sprd_gpio_irq_set_type,
.flags = IRQCHIP_SKIP_SET_WAKE,
.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static int sprd_gpio_probe(struct platform_device *pdev)
@ -245,7 +248,7 @@ static int sprd_gpio_probe(struct platform_device *pdev)
sprd_gpio->chip.direction_output = sprd_gpio_direction_output;
irq = &sprd_gpio->chip.irq;
irq->chip = &sprd_gpio_irqchip;
gpio_irq_chip_set_chip(irq, &sprd_gpio_irqchip);
irq->handler = handle_bad_irq;
irq->default_type = IRQ_TYPE_NONE;
irq->parent_handler = sprd_gpio_irq_handler;