Re: [PATCH] ASoC: codecs: cs42l42-sdw: Propagate regcache_sync() errors

[Richard Fitzgerald <rf@opensource.cirrus.com>]

On 04/07/2026 8:27 am, Pengpeng Hou wrote:
> cs42l42_sdw_runtime_resume() first syncs LATCH_TO_VP and then syncs the
> full regmap, but currently ignores both return values and can report
> success after a failed replay.
> 
> Check both sync operations, return the first error, and restore cache-
> only/dirty state on failure.
> 
> Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
> ---
>   sound/soc/codecs/cs42l42-sdw.c | 14 ++++++++++++--
>   1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/codecs/cs42l42-sdw.c b/sound/soc/codecs/cs42l42-sdw.c
> index ad1256910a18..b61ca74dcf0b 100644
> --- a/sound/soc/codecs/cs42l42-sdw.c
> +++ b/sound/soc/codecs/cs42l42-sdw.c
> @@ -481,10 +481,20 @@ static int cs42l42_sdw_runtime_resume(struct device *dev)
>   	regcache_cache_only(cs42l42->regmap, false);
>   
>   	/* Sync LATCH_TO_VP first so the VP domain registers sync correctly */
> -	regcache_sync_region(cs42l42->regmap, CS42L42_MIC_DET_CTL1, CS42L42_MIC_DET_CTL1);
> -	regcache_sync(cs42l42->regmap);
> +	ret = regcache_sync_region(cs42l42->regmap, CS42L42_MIC_DET_CTL1, CS42L42_MIC_DET_CTL1);
> +	if (ret)
> +		goto err_sync;
> +
> +	ret = regcache_sync(cs42l42->regmap);
> +	if (ret)
> +		goto err_sync;
>   
>   	return 0;
> +
> +err_sync:
> +	regcache_cache_only(cs42l42->regmap, true);
> +	regcache_mark_dirty(cs42l42->regmap);
> +	return ret;
>   }
>   
>   static int cs42l42_sdw_resume(struct device *dev)

Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>