ath11k: qca6390 firmware crashes while connecting to 160 MHz channel

[Kalle Valo]

Wen Gong <wgong at codeaurora.org> writes:

> On 2021-02-14 02:36, Justin Mazzola Paluska wrote:
>> On 2/12/21 1:16 AM, Kalle Valo wrote:
>>> Justin Mazzola Paluska <jmp at justinmp.com> writes:
>>>
>>>> On 2/11/21 6:10 AM, Kalle Valo wrote:
>>>>> (changing the title to find this easier)
>>>>>
>>>>> Justin Mazzola Paluska <jmp at justinmp.com> writes:
>>>>>
>>>>>> On 12/21/20 12:11 PM, Kalle Valo wrote:
>>>>>>>> My router supports 160 MHz channels in the 5 GHz bands [1].  I
>>>>>>>> switched the router to advertising 80 MHz channels and the
>>>>>>>> card could
>>>>>>>> connect.
>>>>>>> Thanks for the detailed debugging, this should help us
>>>>>>> reproducing the
>>>>>>> problem. What's the exact openwrt version you are using?
>>>>>> The OpenWRT version is:
>>>>>>
>>>>>> OpenWrt 19.07.5 r11257-5090152ae3 / LuCI openwrt-19.07 branch
>>>>>> git-20.341.57626-51f55b5
>>>>>>
>>>>>> (This is the latest stable release.)
>>>>> Thanks. I got a report that this might be due to commit 3579994476b6
>>>>> ("wireless: fix wrong 160/80+80 MHz setting"). Can you try
>>>>> reverting the
>>>>> commit just to confirm we are seeing the same issue?
>>>> I will try over the weekend.  Shall I still use the
>>>> ath11k-qca6390-bringup branch or something else?  (I'm still running
>>>> the ath11k-qca6390-bringup branch on my laptop).
>>> Yes, use the same branch. Least amount of changes that way.
>>
>> I reverted 3579994476b6 and re-enabled 160 MHz channels on my router. 
>> I was able to connect to my router using the 5 GHz band at 80 MHz (as
>> expected).
>>
>> It seems that reverting 3579994476b6 fixed the firmware crash with 160
>> MHz channels!
>>
>> I'll leave my router in 160 MHz mode for a while to see if there are
>> any problems that crop up over time.
>
> Does anyone trying revert this patch(3579994476b6 wireless: fix wrong
> 160/80+80 MHz setting) upstream?

Yes, Justin reports above that he reverted commit 3579994476b6 and the
firmware did not crash after that.

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