stm_register_device
if (stm_register_device(dev, &drvdata->stm, THIS_MODULE)) {
err = stm_register_device(dev, &sth->stm, THIS_MODULE);
EXPORT_SYMBOL_GPL(stm_register_device);
ret = stm_register_device(NULL, &dummy_stm[i], THIS_MODULE);
int stm_register_device(struct device *parent, struct stm_data *stm_data,