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

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Date:   Thu, 8 Jul 2021 17:11:14 +0530
From:   "Mukunda,Vijendar" <vijendar.mukunda@....com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.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

On 7/7/21 10:04 PM, Pierre-Louis Bossart wrote:
> 
>> +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?

 We will modify the code.
> 
> also not clear why you don't have a .suspend here
It was a miss. we will add .suspend callback which invokes same callback
"snd_acp5x_suspend".
> 
> And to avoid warnings use __maybe_unused for those callbacks when PM is disabled?
> 
Agreed. We will modify the code and post the new version.
>