IP27_HUB_PEND1_IRQ
enable_percpu_irq(IP27_HUB_PEND1_IRQ, IRQ_TYPE_NONE);
irq_set_percpu_devid(IP27_HUB_PEND1_IRQ);
irq_set_chained_handler_and_data(IP27_HUB_PEND1_IRQ, ip27_do_irq_mask1,