Re: [PATCH v5 01/33] thermal/of: Rework the thermal device tree initialization

[Daniel Lezcano]

Hi Ido,

On 18/10/2022 12:29, Ido Schimmel wrote:
> On Fri, Aug 05, 2022 at 12:43:17AM +0200, Daniel Lezcano wrote:
> > +struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor, int id, void *data,
> > +						     const struct thermal_zone_device_ops *ops)
> > +{
> > +	struct thermal_zone_device *tz;
> > +	struct thermal_trip *trips;
> > +	struct thermal_zone_params *tzp;
> > +	struct thermal_zone_device_ops *of_ops;
> > +	struct device_node *np;
> > +	int delay, pdelay;
> > +	int ntrips, mask;
> > +	int ret;
> > +
> > +	of_ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL);
> > +	if (!of_ops)
> > +		return ERR_PTR(-ENOMEM);
> > +	
> > +	np = of_thermal_zone_find(sensor, id);
> > +	if (IS_ERR(np)) {
> > +		pr_err("Failed to find thermal zone for %pOFn id=%d\n", sensor, id);
> > +		return ERR_CAST(np);
> > +	}
> > +
> > +	trips = thermal_of_trips_init(np, &ntrips);
> > +	if (IS_ERR(trips)) {
> > +		pr_err("Failed to find trip points for %pOFn id=%d\n", sensor, id);
> > +		return ERR_CAST(trips);
> > +	}
> > +
> > +	ret = thermal_of_monitor_init(np, &delay, &pdelay);
> > +	if (ret) {
> > +		pr_err("Failed to initialize monitoring delays from %pOFn\n", np);
> > +		goto out_kfree_trips;
> > +	}
> > +
> > +	tzp = thermal_of_parameters_init(np);
> > +	if (IS_ERR(tzp)) {
> > +		ret = PTR_ERR(tzp);
> > +		pr_err("Failed to initialize parameter from %pOFn: %d\n", np, ret);
> > +		goto out_kfree_trips;
> > +	}
> > +
> > +	of_ops->get_trip_type = of_ops->get_trip_type ? : of_thermal_get_trip_type;
> > +	of_ops->get_trip_temp = of_ops->get_trip_temp ? : of_thermal_get_trip_temp;
> > +	of_ops->get_trip_hyst = of_ops->get_trip_hyst ? : of_thermal_get_trip_hyst;
> > +	of_ops->set_trip_hyst = of_ops->set_trip_hyst ? : of_thermal_set_trip_hyst;
> > +	of_ops->get_crit_temp = of_ops->get_crit_temp ? : of_thermal_get_crit_temp;
> > +	of_ops->bind = thermal_of_bind;
> > +	of_ops->unbind = thermal_of_unbind;
> > +
> > +	mask = GENMASK_ULL((ntrips) - 1, 0);
> > +
> > +	tz = thermal_zone_device_register_with_trips(np->name, trips, ntrips,
> > +						     mask, data, of_ops, tzp,
> > +						     pdelay, delay);
> > +	if (IS_ERR(tz)) {
> > +		ret = PTR_ERR(tz);
> > +		pr_err("Failed to register thermal zone %pOFn: %d\n", np, ret);
> > +		goto out_kfree_tzp;
> > +	}
> > +
> > +	ret = thermal_zone_device_enable(tz);
> > +	if (ret) {
> > +		pr_err("Failed to enabled thermal zone '%s', id=%d: %d\n",
> > +		       tz->type, tz->id, ret);
> > +		thermal_of_zone_unregister(tz);
> > +		return ERR_PTR(ret);
> > +	}
> > +
> > +	return tz;
> > +
> > +out_kfree_tzp:
> > +	kfree(tzp);
> > +out_kfree_trips:
> > +	kfree(trips);
> > +
> > +	return ERR_PTR(ret);
> > +}
> > +EXPORT_SYMBOL_GPL(thermal_of_zone_register);
>
> Daniel, I started seeing these memory leaks [1] since commit
> 613ed3f67609 ("hwmon: pm_bus: core: Switch to new of thermal API").
> Seems to be fixed by the following patch [2].
>
> Do you already have a patch for this issue or should I submit it?

Thanks for reporting the issue. If you can submit it, that would be great