ATKBD_KEY_NULL 458 drivers/input/keyboard/atkbd.c if (keycode != ATKBD_KEY_NULL) ATKBD_KEY_NULL 462 drivers/input/keyboard/atkbd.c case ATKBD_KEY_NULL: ATKBD_KEY_NULL 1117 drivers/input/keyboard/atkbd.c atkbd->keycode[i] != ATKBD_KEY_NULL &&