Re: [PATCH net] wifi: ath12k: properly set single_chip_mlo_supp to true in ath12k_core_alloc()

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On 3/19/2025 3:27 AM, Krzysztof Kozlowski wrote:
> On 19/03/2025 10:06, Vasanthakumar Thiagarajan wrote:
>>>>> ---
>>>>> base-commit: 7eb172143d5508b4da468ed59ee857c6e5e01da6
>>>>> change-id: 20250303-topic-ath12k-fix-crash-49e9055c61a1
>>>>>
>>>>> Best regards,
>>>>
>>>> NAK since this will break QCN
>>>> There is a series under internal review to address MLO issues for WCN chipsets
>>>
>>> ???
>>>
>>> The original commit is wrong, this fixes the conversion, nothing else.
>>
>> Nope. Driver changes to enable MLO with WCN chipset are not there yet.
>> Setting the mlo capability flag without having required driver changes
>> for WCN chipset will likely result in firmware crash. So the recommendation
>> is to enable MLO (in WCN) only when all the necessary driver changes
>> (in development, public posting in near future) are in place.
> Really, these are your answers? There is regression and first reply is
> upstream should wait for whatever you do internally. Second answer is
> the same - public posting in near future?
> 
> Can you start working with the upstream instead?

There is a lot going on in this thread. I want to address the big picture. It
is no secret that Qualcomm has historically focused on downstream drivers, and
upstream was mostly an afterthought. But that mindset has changed. Qualcomm is
fully embracing upstream kernel development, and has actively recruited (and
is still recruiting!) experienced upstream Linux Kernel engineers. And in
places where there are shortcoming, Qualcomm has partnered with companies like
Linaro to bring in needed support. So Qualcomm is very much "working with the
upstream." We may not be working well sometimes, but many of us are still
inexperienced with working with the upstream. We are coming up to speed.
Specifically for Wi-Fi, we have a large number of engineers who have primarily
worked on downstream code who are now working on upstream (including me!). And
we still have the issue that many of the products we are shipping now still
have a lot of downstream DNA, especially when it comes to firmware interfaces.
So please bear with us as we learn and evolve.

Please keep the constructive feedback coming. And remember, the more detailed
the feedback, the easier it is to incorporate the feedback.

Thanks!
/jeff





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