for (device_find_first_child(dev, &keyb_dev);
keyb_dev;
device_find_next_child(&keyb_dev)) {
if (device_get_uclass_id(keyb_dev) == UCLASS_KEYBOARD) {
for (device_find_first_child(dev, &keyb_dev);
keyb_dev;
device_find_next_child(&keyb_dev)) {
if (device_get_uclass_id(keyb_dev) == UCLASS_KEYBOARD) {