linux-kernel - Re: [PATCH v21 07/39] ASoC: Add SOC USB APIs for adding an USB backend

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Date: Wed, 8 May 2024 13:16:38 -0700
From: Wesley Cheng <quic_wcheng@...cinc.com>
To: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        <srinivas.kandagatla@...aro.org>, <mathias.nyman@...el.com>,
        <perex@...ex.cz>, <conor+dt@...nel.org>, <corbet@....net>,
        <lgirdwood@...il.com>, <andersson@...nel.org>, <krzk+dt@...nel.org>,
        <gregkh@...uxfoundation.org>, <Thinh.Nguyen@...opsys.com>,
        <broonie@...nel.org>, <bgoswami@...cinc.com>, <tiwai@...e.com>,
        <bagasdotme@...il.com>, <robh@...nel.org>, <konrad.dybcio@...aro.org>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-sound@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <alsa-devel@...a-project.org>
Subject: Re: [PATCH v21 07/39] ASoC: Add SOC USB APIs for adding an USB
 backend

Hi Pierre,

On 5/7/2024 1:26 PM, Pierre-Louis Bossart wrote:
> 
>> +const char *snd_soc_usb_get_components_tag(bool playback)
>> +{
>> +	if (playback)
>> +		return "usbplaybackoffload: 1";
>> +	else
>> +		return "usbcaptureoffload : 1";
> 
> why are there different spaces and do we need spaces in the first place?
> 

Will remove these spaces once we clarify if this is still needed.

>> +int snd_soc_usb_add_port(struct snd_soc_usb *usb)
>> +{
>> +	mutex_lock(&ctx_mutex);
>> +	list_add_tail(&usb->list, &usb_ctx_list);
>> +	mutex_unlock(&ctx_mutex);
>> +
>> +	return 0;
> 
> make the function return void?
> 

Ack.

>> +int snd_soc_usb_remove_port(struct snd_soc_usb *usb)
>> +{
>> +	struct snd_soc_usb *ctx, *tmp;
>> +
>> +	mutex_lock(&ctx_mutex);
>> +	list_for_each_entry_safe(ctx, tmp, &usb_ctx_list, list) {
>> +		if (ctx == usb) {
>> +			list_del(&ctx->list);
>> +			break;
>> +		}
>> +	}
>> +	mutex_unlock(&ctx_mutex);
>> +
>> +	return 0;
> 
> make this return void?
> 
> 

Ack.

Thanks
Wesley Cheng