set_irq_handler 和 set_irq_chained_handler

[jxj141]

这2个函数都是用于注册中断处理程序，有什么区别？

[Wenxy1]

/*
 * Set a highlevel flow handler for a given IRQ:
 */
static inline void
set_irq_handler(unsigned int irq, irq_flow_handler_t handle)
{
	__set_irq_handler(irq, handle, 0, NULL);
}


/*
 * Set a highlevel chained flow handler for a given IRQ.
 * (a chained handler is automatically enabled and set to
 *  IRQ_NOREQUEST and IRQ_NOPROBE)
 */
static inline void
set_irq_chained_handler(unsigned int irq,
			irq_flow_handler_t handle)
{
	__set_irq_handler(irq, handle, 1, NULL);
}

非级联中断用set_irq_handler();
级联中断用set_irq_chained_handler().

[jxj141]

非级联中断和级联中断有什么区别？

[zshshr]

同问啊？
非级联中断和级联中断有什么区别？
http://www.diybl.com/course/6_system/linux/Linuxjs/2008926/145722.html
unsigned long flags; //中断标志，比如是否共享中断，电平触发还是边沿触发