tag	line	file	source code
change_speed	1146	drivers/char/serial.c	change_speed(info->line);
change_speed	1150	drivers/char/serial.c	change_speed(info->line);
change_speed	1245	drivers/char/serial.c	change_speed(info->line);
change_speed	1397	drivers/char/serial.c	change_speed(DEV_TO_SL(tty->line));
change_speed	1628	drivers/char/serial.c	change_speed(info->line);