linux-kernel - Re: [PATCH 10/12] ASoC: amd: add vangogh pci driver pm ops

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Date:   Wed, 7 Jul 2021 11:34:12 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Vijendar Mukunda <vijendar.mukunda@....com>, broonie@...nel.org,
        alsa-devel@...a-project.org
Cc:     Sunil-kumar.Dommati@....com, Liam Girdwood <lgirdwood@...il.com>,
        open list <linux-kernel@...r.kernel.org>,
        Takashi Iwai <tiwai@...e.com>, Alexander.Deucher@....com
Subject: Re: [PATCH 10/12] ASoC: amd: add vangogh pci driver pm ops


> +static int snd_acp5x_suspend(struct device *dev)
> +{
> +	int ret;
> +	struct acp5x_dev_data *adata;
> +
> +	adata = dev_get_drvdata(dev);
> +	ret = acp5x_deinit(adata->acp5x_base);
> +	if (ret)
> +		dev_err(dev, "ACP de-init failed\n");
> +	else
> +		dev_dbg(dev, "ACP de-initialized\n");
> +
> +	return ret;
> +}
> +
> +static int snd_acp5x_resume(struct device *dev)
> +{
> +	int ret;
> +	struct acp5x_dev_data *adata;
> +
> +	adata = dev_get_drvdata(dev);
> +	ret = acp5x_init(adata->acp5x_base);
> +	if (ret) {
> +		dev_err(dev, "ACP init failed\n");
> +		return ret;
> +	}
> +	return 0;
> +}
> +
> +static const struct dev_pm_ops acp5x_pm = {
> +	.runtime_suspend = snd_acp5x_suspend,
> +	.runtime_resume =  snd_acp5x_resume,
> +	.resume =	snd_acp5x_resume,

use SET_SYSTEM_SLEEP_PM_OPS and SET_RUNTIME_PM_OPS?

also not clear why you don't have a .suspend here?

And to avoid warnings use __maybe_unused for those callbacks when PM is disabled?