[PATCH ath-next v2] wifi: ath12k: avoid dynamic alloc when parsing wmi tb

[Nicolas Escande]

On Mon Mar 16, 2026 at 3:27 AM CET, Baochen Qiang wrote:
[...]
> or alternately you can define ath12k_wmi_tb in wmi.c and add alloc/free functions in
> wmi.c, then call them in core.c. this helps modularity IMO?

I'll add new functions to wmi.c and make ath12k_wmi_tb static to that file.
>
> either way works for me!
>
[...]
>> +static int ath12k_init(void)
>> +{
>> +	ath12k_wmi_tb = __alloc_percpu(WMI_TAG_MAX * sizeof(void *),
>> +				       __alignof__(void *));
>> +	if (!ath12k_wmi_tb) {
>> +		pr_warn("Failed to alloc ath12k WMI tb\n");
>
> generally we don't log memory allocation failure

sure will fix

>
>> +		return -ENOMEM;
>> +	}
>> +
>> +	return 0;
>> +}

[...]

>> @@ -9215,11 +9127,8 @@ static void ath12k_wmi_event_teardown_complete(struct ath12k_base *ab,
>>  	ev = tb[WMI_TAG_MLO_TEARDOWN_COMPLETE];
>>  	if (!ev) {
>>  		ath12k_warn(ab, "failed to fetch teardown complete event\n");
>> -		kfree(tb);
>>  		return;
>
> nit: better to remove return as well

Indeed this slipped through the cracks will fix

>
>>  	}
>> -
>> -	kfree(tb);
>>  }
>>  
>>  #ifdef CONFIG_ATH12K_DEBUGFS