运行串口测试程序时摁“CTRL+C”或KILL测试程序对应的进程时，一直不断地打印如下信息，此打印信息来自8250.c文件中的serial8250_interrupt函数，有木有遇到过同样的问题的啊，求大神们指教啊
^Cserial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250_interrupt: 23225 callbacks suppressed
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250: too much work for irq43
serial8250_interrupt: 23226 callbacks suppressed
------解决方案--------------------
我的是因为设置串口的时候产生了忙中断，清中断后又设置串口，继续忙中断，导致死循环，我把写LCR寄存器注掉了，直接原因是串口收还是发少了个上拉电阻