static int ubx_probe()

in ubx.c [66:118]

• 42 lines of code
• 9 McCabe index (conditional complexity)

static int ubx_probe(struct serdev_device *serdev)
{
	struct gnss_serial *gserial;
	struct ubx_data *data;
	int ret;

	gserial = gnss_serial_allocate(serdev, sizeof(*data));
	if (IS_ERR(gserial)) {
		ret = PTR_ERR(gserial);
		return ret;
	}

	gserial->ops = &ubx_gserial_ops;

	gserial->gdev->type = GNSS_TYPE_UBX;

	data = gnss_serial_get_drvdata(gserial);

	data->vcc = devm_regulator_get(&serdev->dev, "vcc");
	if (IS_ERR(data->vcc)) {
		ret = PTR_ERR(data->vcc);
		goto err_free_gserial;
	}

	data->v_bckp = devm_regulator_get_optional(&serdev->dev, "v-bckp");
	if (IS_ERR(data->v_bckp)) {
		ret = PTR_ERR(data->v_bckp);
		if (ret == -ENODEV)
			data->v_bckp = NULL;
		else
			goto err_free_gserial;
	}

	if (data->v_bckp) {
		ret = regulator_enable(data->v_bckp);
		if (ret)
			goto err_free_gserial;
	}

	ret = gnss_serial_register(gserial);
	if (ret)
		goto err_disable_v_bckp;

	return 0;

err_disable_v_bckp:
	if (data->v_bckp)
		regulator_disable(data->v_bckp);
err_free_gserial:
	gnss_serial_free(gserial);

	return ret;
}