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gpio: vf610: handle level IRQ's properly

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The GPIO IRQ controller is able to generate level triggered
interrupts, however, these were handled by handle_simple_irq so far
which did not take care of IRQ masking. This lead to "nobody cared
(try booting with the "irqpoll" option)" stack traces.

Use the generic interrupt handlers depending on the IRQ type.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Stefan Agner 2015-08-21 15:56:42 -07:00 committed by Linus Walleij
parent 78de5d5220
commit fd96811576
1 changed files with 8 additions and 1 deletions
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9
drivers/gpio/gpio-vf610.c
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@ -60,6 +60,8 @@ struct vf610_gpio_port {
#define PORT_INT_EITHER_EDGE 0xb
#define PORT_INT_LOGIC_ONE 0xc
static struct irq_chip vf610_gpio_irq_chip;
static const struct of_device_id vf610_gpio_dt_ids[] = {
{ .compatible = "fsl,vf610-gpio" },
{ /* sentinel */ }
@ -173,6 +175,11 @@ static int vf610_gpio_irq_set_type(struct irq_data *d, u32 type)
port->irqc[d->hwirq] = irqc;
if (type & IRQ_TYPE_LEVEL_MASK)
__irq_set_handler_locked(d->irq, handle_level_irq);
else
__irq_set_handler_locked(d->irq, handle_edge_irq);
return 0;
}
@ -263,7 +270,7 @@ static int vf610_gpio_probe(struct platform_device *pdev)
vf610_gpio_writel(~0, port->base + PORT_ISFR);
ret = gpiochip_irqchip_add(gc, &vf610_gpio_irq_chip, 0,
handle_simple_irq, IRQ_TYPE_NONE);
handle_edge_irq, IRQ_TYPE_NONE);
if (ret) {
dev_err(dev, "failed to add irqchip\n");
gpiochip_remove(gc);