Re: [PATCH -next] ASoC: mediatek: mt8195: Fix build warning without CONFIG_OF

[Arnd Bergmann]

On Fri, May 6, 2022 at 4:26 AM YueHaibing <yuehaibing@xxxxxxxxxx> 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 = {
>       |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> These variables is only used with CONFIG_OF, move it into the ifdef block.
>
> Fixes: 86a6b9c9dfff ("ASoC: mediatek: mt8195: add machine support for max98390 and rt5682")
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>

It's generally better to remove the #ifdef rather than expanding it,
there is no need to
save a few bytes on kernel builds of this driver that disable
CONFIG_OF. Just drop
the of_match_ptr() macro as well.


        Arnd