korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-25 21:24:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

pinctrl: amd: Make the irqchip immutable

Browse Source 
Prevent gpiolib from messing with the irqchip by advertising
the irq_chip structure as immutable, making it const, and adding
the various calls that gpiolib relies upon.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220419141846.598305-9-maz@kernel.org
This commit is contained in:
Marc Zyngier 2022-04-19 15:18:44 +01:00
parent 14dbe186b9
commit 6173e56f76
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/pinctrl/pinctrl-amd.c
View File

@ -387,6 +387,8 @@ static void amd_gpio_irq_enable(struct irq_data *d)
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct amd_gpio *gpio_dev = gpiochip_get_data(gc);
gpiochip_enable_irq(gc, d->hwirq);
raw_spin_lock_irqsave(&gpio_dev->lock, flags);
pin_reg = readl(gpio_dev->base + (d->hwirq)*4);
pin_reg |= BIT(INTERRUPT_ENABLE_OFF);
@ -408,6 +410,8 @@ static void amd_gpio_irq_disable(struct irq_data *d)
pin_reg &= ~BIT(INTERRUPT_MASK_OFF);
writel(pin_reg, gpio_dev->base + (d->hwirq)*4);
raw_spin_unlock_irqrestore(&gpio_dev->lock, flags);
gpiochip_disable_irq(gc, d->hwirq);
}
static void amd_gpio_irq_mask(struct irq_data *d)
@ -577,7 +581,7 @@ static void amd_irq_ack(struct irq_data *d)
*/
}
static struct irq_chip amd_gpio_irqchip = {
static const struct irq_chip amd_gpio_irqchip = {
.name = "amd_gpio",
.irq_ack = amd_irq_ack,
.irq_enable = amd_gpio_irq_enable,
@ -593,7 +597,8 @@ static struct irq_chip amd_gpio_irqchip = {
* the wake event. Otherwise the wake event will never clear and
* prevent the system from suspending.
*/
.flags = IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND,
.flags = IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND | IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
#define PIN_IRQ_PENDING (BIT(INTERRUPT_STS_OFF) | BIT(WAKE_STS_OFF))
@ -1026,7 +1031,7 @@ static int amd_gpio_probe(struct platform_device *pdev)
amd_gpio_irq_init(gpio_dev);
girq = &gpio_dev->gc.irq;
girq->chip = &amd_gpio_irqchip;
gpio_irq_chip_set_chip(girq, &amd_gpio_irqchip);
/* This will let us handle the parent IRQ in the driver */
girq->parent_handler = NULL;
girq->num_parents = 0;