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gpio: sifive: Set affinity callback to parent 

This assigns the .irq_set_affinity to the parent callback.
I assume the sifive GPIO can be used in systems with
SMP.

I used the pattern making the hirerarchy tolerant for missing
parent as in Marc's earlier patches.

Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Yash Shah <yash.shah@sifive.com>
Cc: Wesley W. Terpstra <wesley@sifive.com>
Link: https://lore.kernel.org/r/20201117213351.249668-1-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij 2020-11-17 22:33:50 +01:00
parent 3b4feb2115
commit 011a78c194
1 changed files with 11 additions and 0 deletions
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11
drivers/gpio/gpio-sifive.c
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@ -128,6 +128,16 @@ static void sifive_gpio_irq_eoi(struct irq_data *d)
irq_chip_eoi_parent(d);
}
static int sifive_gpio_irq_set_affinity(struct irq_data *data,
const struct cpumask *dest,
bool force)
{
if (data->parent_data)
return irq_chip_set_affinity_parent(data, dest, force);
return -EINVAL;
}
static struct irq_chip sifive_gpio_irqchip = {
.name = "sifive-gpio",
.irq_set_type = sifive_gpio_irq_set_type,
@ -136,6 +146,7 @@ static struct irq_chip sifive_gpio_irqchip = {
.irq_enable = sifive_gpio_irq_enable,
.irq_disable = sifive_gpio_irq_disable,
.irq_eoi = sifive_gpio_irq_eoi,
.irq_set_affinity = sifive_gpio_irq_set_affinity,
};
static int sifive_gpio_child_to_parent_hwirq(struct gpio_chip *gc,