[RFC PATCH 12/14] sound: soc: qcom: qusb6: Ensure PCM format is supported by USB audio device

[Wesley Cheng]

Hi Sergey,

On 12/24/2022 12:19 AM, Sergey Shtylyov wrote:
> Hello!
> 
> On 12/24/22 2:31 AM, Wesley Cheng wrote:
> 
>> Check for if the PCM format is supported during the hw_params callback.  If
>> the profile is not supported then the userspace ALSA entity will receive an
>> error, and can take further action.
>>
>> Signed-off-by: Wesley Cheng <quic_wcheng at quicinc.com>
>> ---
>>   sound/soc/qcom/qdsp6/q6usb.c | 9 ++++++++-
>>   1 file changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/sound/soc/qcom/qdsp6/q6usb.c b/sound/soc/qcom/qdsp6/q6usb.c
>> index a9da6dec6c6f..128e0974db4e 100644
>> --- a/sound/soc/qcom/qdsp6/q6usb.c
>> +++ b/sound/soc/qcom/qdsp6/q6usb.c
>> @@ -42,7 +42,14 @@ static int q6usb_hw_params(struct snd_pcm_substream *substream,
>>   			   struct snd_pcm_hw_params *params,
>>   			   struct snd_soc_dai *dai)
>>   {
>> -	return 0;
>> +	struct q6usb_port_data *data = dev_get_drvdata(dai->dev);
>> +	int direction = substream->stream;
>> +	int ret;
> 
>     You don't seem to need this variable, just use *return*
> snd_soc_usb_find_format(...) >

Thanks for catching this... Will fix it in the next submission I make. 
Happy holidays!

Thanks
Wesley Cheng