ath11k: qca6390 firmware crashes while connecting to 160 MHz channel

[Justin Mazzola Paluska]

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.
     --Justin