Re: [PATCH v13 20/53] ASoC: Add SOC USB APIs for adding an USB backend

[Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>]

On 2/3/2024 3:36 AM, Wesley Cheng wrote:
> Some platforms may have support for offloading USB audio devices to a
> dedicated audio DSP.  Introduce a set of APIs that allow for management of
> USB sound card and PCM devices enumerated by the USB SND class driver.
> This allows for the ASoC components to be aware of what USB devices are
> available for offloading.
>
> Signed-off-by: Wesley Cheng <quic_wcheng@xxxxxxxxxxx>
> ---

...

> +
> +/**
> + * snd_soc_usb_add_port() - Add a USB backend port
> + * @dev: USB backend device
> + * @priv: private data
> + * @connection_cb: connection status callback
> + *
> + * Register a USB backend device to the SND USB SOC framework.  Memory is
> + * allocated as part of the USB backend device.
> + *
> + */
> +int snd_soc_usb_add_port(struct snd_soc_usb *usb)
> +{
> +
> +

Cosmetic, but why is there white space between start of function and 
body of function?

> +	mutex_lock(&ctx_mutex);
> +	list_add_tail(&usb->list, &usb_ctx_list);
> +	mutex_unlock(&ctx_mutex);
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(snd_soc_usb_add_port);
> +