Re: [PATCH v2] thermal: Fail object registration if thermal class is not registered

From: Daniel Lezcano
Date: Mon Jan 23 2023 - 17:56:26 EST


On 23/01/2023 21:44, Rafael J. Wysocki wrote:
From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

If thermal_class is not registered with the driver core, there is no way
to expose the interfaces used by the thermal control framework, so
prevent thermal zones and cooling devices from being registered in
that case by returning an error from object registration functions.

For this purpose, use a thermal_class pointer that will be NULL if the
class is not registered. To avoid wasting memory in that case, allocate
the thermal class object dynamically and if it fails to register, free
it and clear the thermal_class pointer to NULL.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>


--
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog