__usb_serial_register_drivers
tty_encode_baud_rate
tty_get_char_size
tty_kref_put
tty_port_tty_get
tty_termios_baud_rate
tty_termios_hw_change
usb_control_msg_recv
usb_control_msg_send
usb_deregister
usb_kill_urb
usb_register_driver
usb_serial_deregister_drivers
usb_serial_generic_close
usb_serial_generic_open
usb_serial_generic_resume
usb_serial_generic_tiocmiwait
usb_serial_handle_break
usb_serial_handle_dcd_change
usb_serial_handle_sysrq_char
usb_submit_urb
