//sys/bus/platform/drivers/serial8250/serial8250/tty:ttyS2/subsystem/tty7/subsystem/tty57/subsystem/tty57/subsystem/tty/subsystem/tty57/subsystem/tty11/subsystem/tty19/subsystem/ttyS1/device/tty:ttyS2/subsystem/tty21/uevent