linux-kernel - Re: [PATCH v2 -next] ASoC: mediatek: mt8195: Fix build warning without CONFIG

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Date:   Sat, 7 May 2022 10:42:36 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     YueHaibing <yuehaibing@...wei.com>
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>,
        Tzung-Bi Shih <tzungbi@...gle.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Trevor Wu <trevor.wu@...iatek.com>,
        Arnd Bergmann <arnd@...db.de>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC..." 
        <linux-mediatek@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 -next] ASoC: mediatek: mt8195: Fix build warning
 without CONFIG_OF

On Sat, May 7, 2022 at 4:14 AM YueHaibing <yuehaibing@...wei.com> wrote:
>
> sound/soc/mediatek/mt8195/mt8195-mt6359.c:1639:32: warning: ‘mt8195_mt6359_max98390_rt5682_card’ defined but not used [-Wunused-variable]
>  1639 | static struct mt8195_card_data mt8195_mt6359_max98390_rt5682_card = {
>       |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> sound/soc/mediatek/mt8195/mt8195-mt6359.c:1634:32: warning: ‘mt8195_mt6359_rt1011_rt5682_card’ defined but not used [-Wunused-variable]
>  1634 | static struct mt8195_card_data mt8195_mt6359_rt1011_rt5682_card = {
>       |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> sound/soc/mediatek/mt8195/mt8195-mt6359.c:1629:32: warning: ‘mt8195_mt6359_rt1019_rt5682_card’ defined but not used [-Wunused-variable]
>  1629 | static struct mt8195_card_data mt8195_mt6359_rt1019_rt5682_card = {
>       |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Since all users of this driver do need CONFIG_OF anyway, there is no
> need to save a few bytes on kernel builds while CONFIG_OF disabled, so
> just remove the #ifdef to fix this warning.
>
> Fixes: 86a6b9c9dfff ("ASoC: mediatek: mt8195: add machine support for max98390 and rt5682")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
> v2: remove #ifdef block as Arnd suggested

Looks good to me,

Acked-by: Arnd Bergmann <arnd@...db.de>