Re: [PATCH v21 26/39] ASoC: qcom: qdsp6: Add support to track available USB PCM devices

[Wesley Cheng]

Hi Pierre,

On 5/7/2024 2:23 PM, Pierre-Louis Bossart wrote:
> > @@ -113,6 +120,12 @@ static int q6usb_alsa_connection_cb(struct snd_soc_usb *usb,
> >   	if (connected) {
> >   		/* We only track the latest USB headset plugged in */
> >   		data->active_usb_chip_idx = sdev->card_idx;
> > +
> > +		set_bit(sdev->card_idx, &data->available_card_slot);
> > +		data->status[sdev->card_idx].sdev = sdev;
>
> Not following the 'only track the latest USB headset plugged in', I
> don't see anything that discard the previously latest headset...
>
> If you plug headset1, then headset2, how is headset1 marked as not
> available for USB offload?

It won't mark headset1 as not available for offload, because offload 
could happen on either depending on what is selected (from the kcontrol 
as well).

Thanks
Wesley Cheng