taglinefilesource code
old_vc_mode543drivers/char/tty_io.cunsigned char old_vc_mode;
old_vc_mode556drivers/char/tty_io.cold_vc_mode = vt_cons[fg_console]->vc_mode;
old_vc_mode592drivers/char/tty_io.cif (old_vc_mode != vt_cons[new_console]->vc_mode)