linux-kernel - Re: [alsa-devel] [PATCH v1 3/3] ASoC: soc-core: fix platform name vs. of

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Date:   11 Jan 2019 17:51:22 +0900
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     Jon Hunter <jonathanh@...dia.com>
Cc:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        <linux-tegra@...r.kernel.org>, Matthias Reichl <hias@...us.com>,
        <alsa-devel@...a-project.org>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Takashi Iwai <tiwai@...e.com>, <linux-kernel@...r.kernel.org>,
        Marcel Ziswiler <marcel@...wiler.com>
Subject: Re: [alsa-devel] [PATCH v1 3/3] ASoC: soc-core: fix platform name vs. of_node assignement


Hi Jon

> > Indeed there is such case so far, but my understanding is that current
> > driver should select "legacy style" or "modern style".
> > If driver setup it as "legacy", but access to "modern" member,
> > it is driver side bug, right ?
> 
> Yes absolutely it is a driver bug, but looking at the snd_soc_dai_link
> structure today it is not clear what the driver should be setting and
> what is 'modern' and what is 'legacy'. You need to dig through the git
> history and code to figure this out. So you could say it is not very
> well documented/commented from a soc-core perspective and could be easy
> for a driver writer to get themselves in a pickle/mess. Anyway, that is
> easy to fix and we could add some comments to clear it up.

Thank you for your feedback.
Yes, indeed there is no enough information/documentation about
legacy/modern style, and its plan
(= all driver will be switched to modern, legacy will be removed, etc, etc..).

So, can you agree about these ?
1) Add enough information/documentation about legacy/modern style and its plan.
2) Add dirty pointer fixup patch as workaround
3) switch to modern style as much as possible

1) and 2) are needed immediately.
3) needs more time, but we can try

Best regards
---
Kuninori Morimoto