linux-kernel - Re: [PATCH] ASoC: Intel: Handle device properties with software node API

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Date:   Tue, 23 Mar 2021 11:28:27 +0200
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Mark Brown <broonie@...nel.org>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: Intel: Handle device properties with software node
 API

On Mon, Mar 22, 2021 at 10:02:40AM -0500, Pierre-Louis Bossart wrote:
> 
> 
> On 3/22/21 6:06 AM, Heikki Krogerus wrote:
> > The function device_add_properties() is going to be removed.
> > Replacing it with software node API equivalents.
> > 
> > Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> > ---
> > Hi,
> > 
> > This patch depends on a fix from mainline, available in v5.12-rc4:
> > 
> > 	2a92c90f2ecc ("software node: Fix device_add_software_node()")
> > 
> > Cheers,
> > ---
> >   sound/soc/intel/boards/bytcht_es8316.c      |  2 +-
> >   sound/soc/intel/boards/bytcr_rt5640.c       |  2 +-
> >   sound/soc/intel/boards/bytcr_rt5651.c       |  2 +-
> >   sound/soc/intel/boards/sof_sdw_rt711.c      | 20 +++++++++++++++-----
> >   sound/soc/intel/boards/sof_sdw_rt711_sdca.c | 20 +++++++++++++++-----
> >   5 files changed, 33 insertions(+), 13 deletions(-)
> > 
> > diff --git a/sound/soc/intel/boards/bytcht_es8316.c b/sound/soc/intel/boards/bytcht_es8316.c
> > index 06df2d46d910b..4a9817a95928c 100644
> > --- a/sound/soc/intel/boards/bytcht_es8316.c
> > +++ b/sound/soc/intel/boards/bytcht_es8316.c
> > @@ -544,7 +544,7 @@ static int snd_byt_cht_es8316_mc_probe(struct platform_device *pdev)
> >   		props[cnt++] = PROPERTY_ENTRY_BOOL("everest,jack-detect-inverted");
> >   	if (cnt) {
> > -		ret = device_add_properties(codec_dev, props);
> > +		ret = device_create_managed_software_node(codec_dev, props, NULL);
> 
> I don't think this is correct. This is using the codec_dev device, but this
> property is created in the machine driver - different device. I think the
> proper fix is to remove the property in the machine driver .remove()
> callback, as done below for the SoundWire case, and not to rely on devm_
> with the wrong device.
> 
> there was a thread between July and October on this in
> https://github.com/thesofproject/linux/pull/2306/
> 
> It seems that we need to restart this work.
> 
> Heikki, do you mind if I take your patches (keeping you as the author) and
> rework+test them with the SOF tree + CI ?

OK by me (though, I'm not sure about the author part after that).


thanks,

-- 
heikki