Hi,
BTW, I wonder if it has problems when unregistering gpio-regmap. Call Trace of irq_domain_remove() always exits in my test: https://lore.kernel.org/all/011c01d98d3d$99e6c6e0$cdb454a0$@trustnetic.com/ Of course, it could be because there was something wrong with my test code. But I want to be clear about this.
Mh, you've said you don't use the devm_ variant of regmap_add_irq_chip(),
correct? Do you call regmap_del_irq_chip() yourself? It seems that gpiolib is already removing the domain itself. Mh. I guess if the the domain is set via gpiochip_irqchip_add_domain() gpiolib must not call irq_domain_remove() because the domain resource is handled externally (i.e. gpiolib doesn't allocate the domain itself) in our case. Nice finding! Looks like it has been broken since the beginning when I've introduced the gpiochip_irqchip_add_domain(). Will you do another fixes patch for that? I'm not sure where to store that information though. Maybe a new bool "no_domain_free" in struct gpio_irq_chip? -michael
