With W=1:
drivers/tty/serial/8250/8250_port.c:679: warning: Function parameter or member 'termios' not described in 'serial8250_em485_config'
Fix this by documenting the parameter.
Fixes: ae50bb2752836277 ("serial: take termios_rwsem for ->rs485_config() & pass termios as param")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>