#ifndef _LINUX_IRQHANDLER_H#define _LINUX_IRQHANDLER_H/* * Interrupt flow handler typedefs are defined here to avoid circular * include dependencies. */structirq_desc;structirq_data;typedefvoid(*irq_flow_handler_t)(structirq_desc*desc);typedefvoid(*irq_preflow_handler_t)(structirq_data*data);#endif