[root@localhost ~]# setserial -a /dev/ttyS0
/dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ:4
        Baud bade: 115200, close_delay: 500, divisor: 0
        closing wait: 30000
        Flags: spd_normal skip_test auto_irq