linux-kernel - Re: [PATCH] ASoC: meson: add helpers for clk_disable

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Date: Tue, 13 Feb 2024 12:09:52 +0100
From: Jerome Brunet <jbrunet@...libre.com>
To: Arnd Bergmann <arnd@...db.de>
Cc: Jerome Brunet <jbrunet@...libre.com>, Arnd Bergmann <arnd@...nel.org>,
 Stephen Boyd <sboyd@...nel.org>, Mark Brown <broonie@...nel.org>, Liam
 Girdwood <lgirdwood@...il.com>, Jaroslav Kysela <perex@...ex.cz>, Takashi
 Iwai <tiwai@...e.com>, Neil Armstrong <neil.armstrong@...aro.org>, Kevin
 Hilman <khilman@...libre.com>, Martin Blumenstingl
 <martin.blumenstingl@...glemail.com>, Nathan Chancellor
 <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Bill
 Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>,
 alsa-devel@...a-project.org, linux-sound@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org,
 linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] ASoC: meson: add helpers for clk_disable_unprepare


On Tue 13 Feb 2024 at 11:52, "Arnd Bergmann" <arnd@...db.de> wrote:

> On Tue, Feb 13, 2024, at 11:36, Jerome Brunet wrote:
>> On Tue 13 Feb 2024 at 11:11, Arnd Bergmann <arnd@...nel.org> wrote:
>
>> This probably pre-dates the introduction of devm_clk_get_enabled()
>> It would probably be better to use that instead of duplicating helper
>> functions which do the same thing.
>
> Ah, I had not thought of that interface either, so you are probably
> right that this is the best way to do it.
> Can you send a replacement patch then and add my Reported-by?

Sure.

How may I reproduce the problem ?
Just tried with 'Debian clang version 16.0.6 (19)', no warning.

I suppose I need to add something ?

>
> I also sent the same patch for drivers/nvmem/meson-efuse.c, which
> I guess will also need the same treatment. I also checked and saw
> that all three files already had this code in linux-6.0 when
> devm_clk_get_enabled() got added.
>
>> If for any reason it is not possible, a common helper in clk.h would
>> preferable I think.
>
> I can't think of anything that prevents us from using
> devm_clk_get_enabled() here.
>
>     Arnd


-- 
Jerome