Re: [PATCH v28 25/32] ASoC: qcom: qdsp6: Fetch USB offload mapped card and PCM device

+static int q6usb_update_offload_route(struct snd_soc_component *component, int card,

• 		      int pcm, int direction, long *route)
  

+{

• struct q6usb_port_data *data = dev_get_drvdata(component->dev);
• struct snd_soc_usb_device *sdev;
• int ret = 0;
• int cidx = -1;
• int pidx = -1;
• mutex_lock(&data->mutex);
• if (list_empty(&data->devices) ||

•    direction == SNDRV_PCM_STREAM_CAPTURE) {
  

• ret = -ENODEV;
  

• goto out;
  

• }

well the code above seems to invalidate what I understood earlier, in that an error code is returned instead of a set of -1 values...

• sdev = list_last_entry(&data->devices, struct snd_soc_usb_device, list);
• /*

• * Will always look for last PCM device discovered/probed as the
  

• * active offload index.
  

• */
  

• if (card == sdev->card_idx &&

•    pcm == sdev->ppcm_idx[sdev->num_playback - 1]) {
  

• cidx = component->card->snd_card->number;
  

• pidx = q6usb_get_pcm_id(component);
  

• }
• if (cidx < 0 || pidx < 0) {

• cidx = -1;
  

• pidx = -1;
  

• }

+out:

• route[0] = cidx;
• route[1] = pidx;
• mutex_unlock(&data->mutex);
• return ret;

+}