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

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> +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?

> +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?

> +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?






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