gpio: sifive: Set affinity callback to parent (011a78c1) · Commits · 戴 / test

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

drivers/gpio/gpio-sifive.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -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,

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