ping
Viresh Kumar <viresh.kumar@xxxxxxxxxx> 于2025年1月7日周二 14:00写道：
>
> On 06-01-25, 10:05, Viresh Kumar wrote:
> On 03-01-25, 16:35, hlleng wrote:
> > Modify the virtio-gpio driver to support multiple virtual GPIO controller
> > instances. The previous static global irq_chip structure caused conflicts
> > between multiple virtio-gpio device instances as they shared the same
> > interrupt controller configuration.
>
> What is the conflict you are getting since all it has is callbacks only, I
> wonder why do we need to duplicate it.
Ahh, so irq chip should be shared actually..
static void gpiochip_set_irq_hooks(struct gpio_chip *gc)
{
...
/* Check if the irqchip already has this hook... */
if (irqchip->irq_enable == gpiochip_irq_enable ||
irqchip->irq_mask == gpiochip_irq_mask) {
/*
* ...and if so, give a gentle warning that this is bad
* practice.
*/
chip_info(gc,
"detected irqchip that is shared with
multiple gpiochips: please fix the driver.\n");
return;
}
...
}
For your patch:
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
--
viresh
