> +/* Stream disable request timeout during USB device disconnect */
> +#define DEV_RELEASE_WAIT_TIMEOUT 10000 /* in ms */
10s really? That seems rather large for a stream disable timeout...
> +static struct snd_usb_platform_ops offload_ops = {
> + .connect_cb = qc_usb_audio_offload_probe,
> + .disconnect_cb = qc_usb_audio_offload_disconnect,
> + .suspend_cb = qc_usb_audio_offload_suspend,
> +};
You probably want to explain why there's no .resume_cb?
The comments mention also that the suspend_cb has to stop playback, but
then who resumes playback :-)
