static int rcar_gen3_thermal_probe()

in rcar_gen3_thermal.c [451:546]

• 73 lines of code
• 15 McCabe index (conditional complexity)

static int rcar_gen3_thermal_probe(struct platform_device *pdev)
{
	struct rcar_gen3_thermal_priv *priv;
	struct device *dev = &pdev->dev;
	const int *ths_tj_1 = of_device_get_match_data(dev);
	struct resource *res;
	struct thermal_zone_device *zone;
	unsigned int i;
	int ret;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->thermal_init = rcar_gen3_thermal_init;
	if (soc_device_match(r8a7795es1))
		priv->thermal_init = rcar_gen3_thermal_init_r8a7795es1;

	platform_set_drvdata(pdev, priv);

	if (rcar_gen3_thermal_request_irqs(priv, pdev))
		rcar_gen3_tz_of_ops.set_trips = NULL;

	pm_runtime_enable(dev);
	pm_runtime_get_sync(dev);

	for (i = 0; i < TSC_MAX_NUM; i++) {
		struct rcar_gen3_thermal_tsc *tsc;

		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
		if (!res)
			break;

		tsc = devm_kzalloc(dev, sizeof(*tsc), GFP_KERNEL);
		if (!tsc) {
			ret = -ENOMEM;
			goto error_unregister;
		}

		tsc->base = devm_ioremap_resource(dev, res);
		if (IS_ERR(tsc->base)) {
			ret = PTR_ERR(tsc->base);
			goto error_unregister;
		}

		priv->tscs[i] = tsc;
	}

	priv->num_tscs = i;

	if (!rcar_gen3_thermal_read_fuses(priv))
		dev_info(dev, "No calibration values fused, fallback to driver values\n");

	for (i = 0; i < priv->num_tscs; i++) {
		struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];

		zone = devm_thermal_zone_of_sensor_register(dev, i, tsc,
							    &rcar_gen3_tz_of_ops);
		if (IS_ERR(zone)) {
			dev_err(dev, "Can't register thermal zone\n");
			ret = PTR_ERR(zone);
			goto error_unregister;
		}
		tsc->zone = zone;

		priv->thermal_init(tsc);
		rcar_gen3_thermal_calc_coefs(priv, tsc, *ths_tj_1);

		tsc->zone->tzp->no_hwmon = false;
		ret = thermal_add_hwmon_sysfs(tsc->zone);
		if (ret)
			goto error_unregister;

		ret = devm_add_action_or_reset(dev, rcar_gen3_hwmon_action, zone);
		if (ret)
			goto error_unregister;

		ret = of_thermal_get_ntrips(tsc->zone);
		if (ret < 0)
			goto error_unregister;

		dev_info(dev, "TSC%u: Loaded %d trip points\n", i, ret);
	}

	if (!priv->num_tscs) {
		ret = -ENODEV;
		goto error_unregister;
	}

	return 0;

error_unregister:
	rcar_gen3_thermal_remove(pdev);

	return ret;
}