[PATCH v3 1/3] gpio: xgene: Enable X-Gene standby GPIO as interrupt controller

[Thomas Gleixner]

On Thu, 7 Jan 2016, Quan Nguyen wrote:
> -static int apm_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio)
> +static void xgene_gpio_sb_irq_ack(struct irq_data *d)
> +{
> +	struct irq_data *irqdata;
> +	struct xgene_gpio_sb *priv = irq_data_get_irq_chip_data(d);
> +
> +	irqdata = irq_get_irq_data(priv->gic_virq[d->hwirq]);
> +	if (!irqdata || !irqdata->chip)
> +		return;

What the heck is this? Why are you looking up some random other irq and fiddle
with its irq chip?

This is a 1:1 mapping from your gpio irq to a gic irq. We have hierarchical
interrupt domains for this.

Thanks,

	tglx