Re: [PATCH 3/4] thermal/core: Allocate the thermal class dynamically

From: Daniel Lezcano

Date: Fri May 08 2026 - 15:28:37 EST


On 5/8/26 21:26, Rafael J. Wysocki wrote:
On Fri, May 8, 2026 at 9:22 PM Daniel Lezcano
<daniel.lezcano@xxxxxxxxxxxxxxxx> wrote:

On 5/8/26 20:24, Rafael J. Wysocki wrote:
On Fri, May 8, 2026 at 8:05 PM Daniel Lezcano
<daniel.lezcano@xxxxxxxxxxxxxxxx> wrote:

Use class_create() instead of a statically allocated struct class.

This allows the thermal class to be managed through a dynamically
allocated class object and avoids keeping a static class instance
around.

I changed it the other way around during the last cycle, so is it
really worth changing again?

Yes, I think it is because it does not reintroduce this change:

- thermal_class = kzalloc_obj(*thermal_class);
- if (!thermal_class) {
- result = -ENOMEM;
+ result = class_register(&thermal_class);
+ if (result)
goto unregister_governors;
- }

- thermal_class->name = "thermal";
- thermal_class->dev_release = thermal_release;
-
- result = class_register(thermal_class);
- if (result) {
- kfree(thermal_class);
- thermal_class = NULL;
- goto unregister_governors;
- }

It is replaced by thermal_create("thermal") which allocates and
registers the class and we get rid of two global variables. But up to you.

Fair enough.

I'll queue up these changes for 7.2 early next week.

Thanks