VT_SWITCH_KEY_NONE
upper->vt_switch_keystate = VT_SWITCH_KEY_NONE;
if (upper->vt_switch_keystate > VT_SWITCH_KEY_NONE) {
if (upper->vt_switch_keystate > VT_SWITCH_KEY_NONE) {
upper->vt_switch_keystate = VT_SWITCH_KEY_NONE;