linux-kernel - Re: Bug 215726 - si2157.c: mention name of the missing firmware file

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Date:   Wed, 30 Mar 2022 12:44:44 +0200
From:   Thorsten Leemhuis <regressions@...mhuis.info>
To:     Piotr Chmura <chmooreck@...il.com>,
        Robert Schlabbach <robert_s@....net>
Cc:     Antti Palosaari <crope@....fi>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Bug 215726 - si2157.c: mention name of the missing firmware file

On 30.03.22 12:35, Piotr Chmura wrote:
> 
> W dniu 30.03.2022 o 11:55, Thorsten Leemhuis pisze:
>> On 29.03.22 21:21, Robert Schlabbach wrote:
>>> the patch linked in the bugzilla ticket:
>>> https://lore.kernel.org/linux-media/6f84b7f4-3ede-ae55-e99b-a9d4108c80e2@gmail.com/
>>>
>>> should indeed fix the issue.
>> Ahh, the comment mentioning it was added shortly after I sent my mail.
>> #regzbot monitor:
>> https://lore.kernel.org/linux-media/6f84b7f4-3ede-ae55-e99b-a9d4108c80e2@gmail.com/
>>
>>
>> Adding Piotr, the patches' author to the CC, who also replied.
>>
>> BTW: that patch is afaics missing a Fixes tag specifying the culprit and
>> a `Cc: stable@...r.kernel.org # 5.17.x` tag to make sure it's quickly
>> backported to the stable tree, as among others explained here:
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/handling-regressions.rst
>>
> Sorry for my inconvenience.

Don't worry, everything fine. In a case like...

> I just fixed my device and wanted to share
> solution with the "world". I'm not familiar with all kernel development
> convention (yet).

...this someone else should point such details out to the submitter
and/or add these tags when applying the patch.

@Robert: Do you know which commit causes this regression and could tell
us for a proper Fixes: tag?

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

P.S.: As the Linux kernel's regression tracker I'm getting a lot of
reports on my table. I can only look briefly into most of them and lack
knowledge about most of the areas they concern. I thus unfortunately
will sometimes get things wrong or miss something important. I hope
that's not the case here; if you think it is, don't hesitate to tell me
in a public reply, it's in everyone's interest to set the public record
straight.


>>> The error was that the rom_id and required
>>> fields were swapped in the table, so the non-zero rom_id was taken as a
>>> "true" required boolean value, thus incorrectly evaluating that the
>>> chip requires a firmware file to operate when in fact it does not.
>>> I have tested the patch and found it worked for me. But I do not know
>>> how to push this further along:
>>> https://patchwork.linuxtv.org/project/linux-media/patch/6f84b7f4-3ede-ae55-e99b-a9d4108c80e2@gmail.com/
>>>
>> Mauro, what's up here? The patch fixes a regression and thus afaics
>> should quickly find its way towards mainline to get it into the stable
>> tree, as explained in the (bran new) document linked above.
>>
>> Ciao, Thorsten
>>
>>> Gesendet: Dienstag, 29. März 2022 um 10:33 Uhr
>>> Von: "Thorsten Leemhuis" <regressions@...mhuis.info>
>>> An: "Antti Palosaari" <crope@....fi>, "Mauro Carvalho Chehab"
>>> <mchehab+huawei@...nel.org>, "Robert Schlabbach" <robert_s@....net>
>>> Cc: "regressions@...ts.linux.dev" <regressions@...ts.linux.dev>,
>>> az0123456@....de, "Linux Media Mailing List"
>>> <linux-media@...r.kernel.org>, "Linux Kernel Mailing List"
>>> <linux-kernel@...r.kernel.org>
>>> Betreff: Bug 215726 - si2157.c: mention name of the missing firmware
>>> file
>>> Hi, this is your Linux kernel regression tracker.
>>>
>>> I noticed a regression report in bugzilla.kernel.org that afaics nobody
>>> acted upon since it was reported about a week ago, that's why I decided
>>> to forward it to the lists and all people that seemed to be relevant
>>> here. To quote from https://bugzilla.kernel.org/show_bug.cgi?id=215726 :
>>>
>>>> I get the following error messages when trying to use si2157.ko in
>>>> linux 5.17:
>>>> si2157 13-0060: found a 'Silicon Labs Si2157-A30 ROM 0x50'
>>>> si2157 13-0060: Can't continue without a firmware
>>>> I did work in linux 5.16.16 without a firmware file. Unfortunately
>>>> the driver does not tell me the name of the missing firmware file.
>>> Could somebody take a look into this? Or was this discussed somewhere
>>> else already? Or even fixed?
>>>
>>>
> 
>