linux-kernel - Re: [alsa-devel] regression v4.16 on Nokia N900: sound does not work

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Date:   Fri, 2 Mar 2018 13:33:04 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Pavel Machek <pavel@....cz>
Cc:     Daniel Baluta <daniel.baluta@...il.com>,
        Thorsten Leemhuis <regressions@...mhuis.info>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        Ivajlo Dimitrov <ivo.g.dimitrov.75@...il.com>,
        Kevin Hilman <khilman@...nel.org>,
        ext Tony Lindgren <tony@...mide.com>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        kernel list <linux-kernel@...r.kernel.org>,
        Sebastian Reichel <sre@...nel.org>,
        Martijn Braam <martijn@...xit.nl>,
        Filip Matijević <filip.matijevic.pz@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Mickuláš Qwertz <abcloriens@...il.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Pali Rohár <pali.rohar@...il.com>,
        clayton@...ftyguy.net, Linux-OMAP <linux-omap@...r.kernel.org>,
        "Andrew F . Davis" <afd@...com>,
        Patrik Bachan <patrikbachan@...il.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        serge@...lyn.com
Subject: Re: [alsa-devel] regression v4.16 on Nokia N900: sound does not work

On Fri, Mar 2, 2018 at 1:14 PM, Pavel Machek <pavel@....cz> wrote:
>> >> Ok, so this code looks pretty crazy to me: I tried removing the
>> >> "of_find_spi_gpio" part, and audio started working.
>> >
>> > Hmm. Looks like audio is working w/o any changes, too. Not sure why
>> > festival hung on me before.
>>
>> Does it mean that mainline is working find for you or
>> do we need to look deeper into the problem in the OF
>> lookup?
>
> It now works for me.
>
> (But take a look at the patch I sent -- I believe you are still
> overwriting return values in a bad way, and code is quite confusing).

I think that code is a result of piled fixes, so noone
really designed it to look like that.

I'll try to look at it, I am a bit afraid of the code since I've
broken so many things with it.

Yours,
Linus Walleij