28 	const struct demo_ops *ops = device_get_ops(dev);  in demo_hello()  local
30 	if (!ops->hello)  in demo_hello()
33 	return ops->hello(dev, ch);  in demo_hello()
38 	const struct demo_ops *ops = device_get_ops(dev);  in demo_status()  local
40 	if (!ops->status)  in demo_status()
43 	return ops->status(dev, status);  in demo_status()
48 	const struct demo_ops *ops = device_get_ops(dev);  in demo_get_light()  local
50 	if (!ops->get_light)  in demo_get_light()
53 	return ops->get_light(dev);  in demo_get_light()
58 	const struct demo_ops *ops = device_get_ops(dev);  in demo_set_light()  local
60 	if (!ops->set_light)  in demo_set_light()
63 	return ops->set_light(dev, light);  in demo_set_light()