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Message-ID: <89d3f34a-3427-4871-971c-d960a16918ac@broadcom.com>
Date:   Wed, 15 Nov 2023 10:34:17 +0100
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Subject: Re: brcmfmac: Unexpected brcmf_set_channel: set chanspec 0xd022 fail,
 reason -52 - Part 2
To:     Stefan Wahren <wahrenst@gmx.net>,
        Arend van Spriel <aspriel@gmail.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>
Cc:     linux-wireless@vger.kernel.org,
        brcm80211-dev-list.pdl@broadcom.com,
        SHA-cyfmac-dev-list@infineon.com, Hector Martin <marcan@marcan.st>,
        Kalle Valo <kvalo@kernel.org>
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From:   Arend van Spriel <arend.vanspriel@broadcom.com>
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In-Reply-To: <ca0fd1c5-380d-4756-a33a-cb6c84014ce4@gmx.net>
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On 11/13/2023 10:02 PM, Stefan Wahren wrote:
> Hi Arend,
> 
> Am 13.11.23 um 10:11 schrieb Arend van Spriel:
>> On 11/11/2023 9:30 PM, Stefan Wahren wrote:
>>> Am 11.11.23 um 19:29 schrieb Stefan Wahren:
>>>>
>>>> Am 11.11.23 um 18:25 schrieb Arend Van Spriel:
>>>>> On November 11, 2023 5:48:46 PM Stefan Wahren <wahrenst@gmx.net>
>>>>> wrote:
>>>>>
>>>>>
>>>>> Again look like these are disabled channels. At least chanspec 0xd022
>>>>> is 5G channel 34. You say you get this only once so not every 60
>>>>> seconds?
>>>> I get this everytime i trigger a reconnect to the wifi network, so not
>>>> periodically (checked that). Strangely the initial automatic connect
>>>> doesn't trigger this errors.
>>> I additionally placed a WARN_ON_ONCE after the error log and enabled the
>>> firmware error log of brcmf_fil_cmd_data(). Maybe this helps.
>>
>> It does a bit. At least it shows this is happening with the
>> dump_survey (again). I don't really understand why though. It implies
>> the channel is not disabled, but unclear why. The channel flags are
>> changed in brcmf_construct_chaninfo() so we probably should focus
>> debug on that function.
>>
> 
> i placed a pr_err at the start of brcmf_construct_chaninfo and another
> pr_err into the for loop before the "if (channel->orig_flags &
> IEEE80211_CHAN_DISABLED) continue".
> 
> pr_err("%s: Ch num %d, chanspec 0x%x, orig_flags: %x.\n", __func__,
> ch.control_ch_num, ch.chspec, channel->orig_flags);
> 
> It seems that brcmf_construct_chaninfo is called two times, but the
> results are different. I could find 0xd090 in the first run, but not in
> second. The other chanspecs doesn't seem to occur in both runs. No idea
> what's going on here.

Can you print all wiphy band channels before exiting 
brcmf_construct_chaninfo() and print both channel->orig_flags and 
channel->flags?

Gr. AvS

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