linux-kernel - Re: [PATCH 1/3] wifi: mt76: mt7915: remove VHT160 capability on MT7915

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Message-ID: <f9c9bb95-161b-4565-b8d3-fc41c7fe3b29@leemhuis.info>
Date:   Fri, 13 Oct 2023 15:21:17 +0200
From:   "Linux regression tracking #update (Thorsten Leemhuis)" 
        <regressions@...mhuis.info>
To:     Oleksandr Natalenko <oleksandr@...alenko.name>,
        linux-wireless@...r.kernel.org
Cc:     Felix Fietkau <nbd@....name>, Sasha Levin <sashal@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linux kernel regressions list <regressions@...ts.linux.dev>
Subject: Re: [PATCH 1/3] wifi: mt76: mt7915: remove VHT160 capability on
 MT7915

[TLDR: This mail in primarily relevant for Linux kernel regression
tracking. See link in footer if these mails annoy you.]

On 22.09.23 13:22, Linux regression tracking #adding (Thorsten Leemhuis)
wrote:
> 
> On 21.09.23 07:02, Oleksandr Natalenko wrote:
>> On středa 26. července 2023 11:17:02 CEST Felix Fietkau wrote:
>>> The IEEE80211_VHT_CAP_EXT_NSS_BW value already indicates support for half-NSS
>>> 160 MHz support, so it is wrong to also advertise full 160 MHz support.
> [...]
>> and this broke my mt7915-based AP.
>>
>> However, if I remove `[VT160]` capability from the hostapd config, things go back to normal. It does seem that 160 MHz still works even.
>>
>> Is this expected?
> 
> Thanks for the report.

Removing this from the regression tracking after mentioning the intent
to do so due to the tricky striation in my last report to Linus.

#regzbot inconclusive: tricky situation, no simple way out afaics
#regzbot ignore-activity

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
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