Re: [PATCH 6.12 000/460] 6.12.78-rc1 review

Guenter Roeck
2026-03-30T09:02:35Z

Hi,

On 3/23/26 06:39, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.12.78 release.
> There are 460 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Wed, 25 Mar 2026 13:44:33 +0000.
> Anything received after that time might be too late.
>

Since v6.12.64, various architecture/image combinations fail to build
with the following error.

Error log:
sound/soc/codecs/ak4458.c:631:13: error: 'ak4458_reset' defined but not used [-Werror=unused-function]
631 | static void ak4458_reset(struct ak4458_priv *ak4458, bool active)

This is seen if the driver is built with CONFIG_PM=n.

Problem is that ak4458_reset() is only called from inside code
protected with CONFIG_PM, but declared outside it. This was
introduced with commit 47c4976513f1 ("ASoC: ak4458: remove the
reset operation in probe and remove").

The problem is not seen in later kernels which also have commit
9f9c8e9064ea ("ASoC: ak4458: Convert to RUNTIME_PM_OPS() & co").
That commit has not been backported to v6.12.y.

Thanks,
Guenter