rmi_register_transport_device
ret = rmi_register_transport_device(&data->xport);
EXPORT_SYMBOL_GPL(rmi_register_transport_device);
error = rmi_register_transport_device(&rmi_i2c->xport);
error = rmi_register_transport_device(&rmi_smb->xport);
error = rmi_register_transport_device(&rmi_spi->xport);
int rmi_register_transport_device(struct rmi_transport_dev *xport);