gpiochip_set_cascaded_irqchip 1748 drivers/gpio/gpiolib.c 	gpiochip_set_cascaded_irqchip(gpiochip, parent_irq, parent_handler);
gpiochip_set_cascaded_irqchip 1763 drivers/gpio/gpiolib.c 	gpiochip_set_cascaded_irqchip(gpiochip, parent_irq, NULL);