linux-kernel - Re: [PATCH] ASoC: mediatek: mt8195: force COMMON

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Date:   Mon, 20 Sep 2021 12:05:13 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Trevor Wu <trevor.wu@...iatek.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Arnd Bergmann <arnd@...db.de>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>,
        Tzung-Bi Shih <tzungbi@...gle.com>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] ASoC: mediatek: mt8195: force COMMON_CLK dependency

Hi Arnd,

Thanks for your patch!

On Mon, Sep 20, 2021 at 12:02 PM Arnd Bergmann <arnd@...nel.org> wrote:
> From: Arnd Bergmann <arnd@...db.de>
>
> Without CONFIG_COMMON_CLK, this driver fails to link:
>
> ERROR: modpost: "clk_unregister_gate" [sound/soc/mediatek/mt8195/snd-soc-mt8195-afe.ko] undefined!
> ERROR: modpost: "clk_register_gate" [sound/soc/mediatek/mt8195/snd-soc-mt8195-afe.ko] undefined!
>
> Add the proper Kconfig dependency for compile testing.
>
> Fixes: 6746cc858259 ("ASoC: mediatek: mt8195: add platform driver")
> Fixes: 940ffa194547 ("ASoC: mediatek: SND_SOC_MT8195 should depend on ARCH_MEDIATEK")

I don't think the second Fixes tag is appropriate, as that commit did not
relax the dependencies.

> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  sound/soc/mediatek/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
> index 5a2f4667d50b..268c1f74aa3e 100644
> --- a/sound/soc/mediatek/Kconfig
> +++ b/sound/soc/mediatek/Kconfig
> @@ -187,7 +187,7 @@ config SND_SOC_MT8192_MT6359_RT1015_RT5682
>
>  config SND_SOC_MT8195
>         tristate "ASoC support for Mediatek MT8195 chip"
> -       depends on ARCH_MEDIATEK || COMPILE_TEST
> +       depends on ARCH_MEDIATEK || (COMPILE_TEST && COMMON_CLK)

Why not add a second line

    depends on COMMON_CLK

to make a clear distinction between hard and soft dependencies?

>         select SND_SOC_MEDIATEK
>         help
>           This adds ASoC platform driver support for Mediatek MT8195 chip

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds