[PATCH 1/9] workqueue: devres: Add device-managed allocate workqueue

[Krzysztof Kozlowski]

On 23/02/2026 12:34, Andy Shevchenko wrote:
> On Mon, Feb 23, 2026 at 11:18:41AM +0100, Krzysztof Kozlowski wrote:
>> On 23/02/2026 09:56, Andy Shevchenko wrote:
>>> On Mon, Feb 23, 2026 at 08:27:29AM +0100, Krzysztof Kozlowski wrote:
> 
> ...
> 
>>>> +	ptr = devres_alloc(devm_destroy_workqueue, sizeof(*ptr), GFP_KERNEL);
>>>> +	if (!ptr)
>>>> +		return NULL;
>>>> +
>>>> +	va_start(args, max_active);
>>>> +	wq = alloc_workqueue(fmt, flags, max_active, args);
>>>> +	va_end(args);
>>>> +	if (wq) {
>>>> +		*ptr = wq;
>>>> +		devres_add(dev, ptr);
>>>> +	} else {
>>>> +		devres_free(ptr);
>>>> +	}
>>>
>>> Why not using devm_add_action_or_reset()?
>>
>> Where? Here? How the code would be simpler, exactly?
> 
> static void devm_workqueue(struct device *dev, void *wq)
> {
> 	destroy_workqueue(wq);
> }
> ...
> {
> 	...
> 
> 	va_start(args, max_active);
> 	wq = alloc_workqueue(fmt, flags, max_active, args);
> 	va_end(args);
> 	if (!wq)
> 		return NULL; // or ERR_PTR(-ENOMEM) on your choice
> 
> 	ret = devm_add_action_or_reset(dev, ..., wq);
> 	if (ret)
> 		return NULL; // ERR_PTR(ret) on your choice
> 
> 	return wq;
> }
> 
> Compare to yours :-)

Ah, so dropping the devres_alloc()? Yeah, that would be simpler.


Best regards,
Krzysztof