Check for if the PCM format is supported during the hw_params callback. If the profile is not supported then the userspace ALSA entity will receive an error, and can take further action.
Signed-off-by: Wesley Cheng quic_wcheng@quicinc.com --- sound/soc/qcom/qdsp6/q6usb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/sound/soc/qcom/qdsp6/q6usb.c b/sound/soc/qcom/qdsp6/q6usb.c index 64e0e2cc3abf..c4f3039ef8c4 100644 --- a/sound/soc/qcom/qdsp6/q6usb.c +++ b/sound/soc/qcom/qdsp6/q6usb.c @@ -44,7 +44,10 @@ static int q6usb_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { - return 0; + struct q6usb_port_data *data = dev_get_drvdata(dai->dev); + int direction = substream->stream; + + return snd_soc_usb_find_format(data->active_idx, params, direction); } static const struct snd_soc_dai_ops q6usb_ops = { .hw_params = q6usb_hw_params,