//sys/bus/platform/drivers/serial8250/serial8250/tty:ttyS1/subsystem/tty2/subsystem/tty17/subsystem/ttyS2/subsystem/tty33/subsystem/tty8/subsystem/tty1/subsystem/tty42/subsystem/tty16/subsystem/tty56/subsystem/tty42/subsystem/tty45/subsystem/ttyS3/device/tty:ttyS3/subsystem/tty21/uevent