extern struct irq_chip dummy_irq_chip;
extern void
+set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip,
+ irq_flow_handler_t handle);
+extern void
set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
irq_flow_handler_t handle, const char *name);