linux-kernel - Re: [RFC PATCH 34/40] soundwire: intel: ignore disabled links for suspend/resume

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Date:   Fri, 2 Aug 2019 12:44:04 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.de, broonie@...nel.org, gregkh@...uxfoundation.org,
        jank@...ence.com, srinivas.kandagatla@...aro.org,
        slawomir.blauciak@...el.com, Sanyog Kale <sanyog.r.kale@...el.com>
Subject: Re: [RFC PATCH 34/40] soundwire: intel: ignore disabled links for
 suspend/resume

On 8/2/19 12:30 PM, Vinod Koul wrote:
> On 25-07-19, 18:40, Pierre-Louis Bossart wrote:
> 
> Please add explanation why..

yes missed this

> 
>> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
>> ---
>>   drivers/soundwire/intel.c | 12 ++++++++++++
>>   1 file changed, 12 insertions(+)
>>
>> diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
>> index 1477c35f616f..a976480d6f36 100644
>> --- a/drivers/soundwire/intel.c
>> +++ b/drivers/soundwire/intel.c
>> @@ -1161,6 +1161,12 @@ static int intel_suspend(struct device *dev)
>>   
>>   	sdw = dev_get_drvdata(dev);
>>   
>> +	if (sdw->cdns.bus.prop.hw_disabled) {
>> +		dev_dbg(dev, "SoundWire master %d is disabled, ignoring\n",
>> +			sdw->cdns.bus.link_id);
>> +		return 0;
>> +	}
>> +
>>   	ret = intel_link_power_down(sdw);
>>   	if (ret) {
>>   		dev_err(dev, "Link power down failed: %d", ret);
>> @@ -1179,6 +1185,12 @@ static int intel_resume(struct device *dev)
>>   
>>   	sdw = dev_get_drvdata(dev);
>>   
>> +	if (sdw->cdns.bus.prop.hw_disabled) {
>> +		dev_dbg(dev, "SoundWire master %d is disabled, ignoring\n",
>> +			sdw->cdns.bus.link_id);
>> +		return 0;
>> +	}
>> +
>>   	ret = intel_init(sdw);
>>   	if (ret) {
>>   		dev_err(dev, "%s failed: %d", __func__, ret);
>> -- 
>> 2.20.1
>