Re: [RFC PATCH 12/14] sound: soc: qcom: qusb6: Ensure PCM format is supported by USB audio device

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Hi Sergey,

On 12/24/2022 12:19 AM, Sergey Shtylyov wrote:
Hello!

On 12/24/22 2:31 AM, Wesley Cheng wrote:

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@xxxxxxxxxxx>
---
  sound/soc/qcom/qdsp6/q6usb.c | 9 ++++++++-
  1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sound/soc/qcom/qdsp6/q6usb.c b/sound/soc/qcom/qdsp6/q6usb.c
index a9da6dec6c6f..128e0974db4e 100644
--- a/sound/soc/qcom/qdsp6/q6usb.c
+++ b/sound/soc/qcom/qdsp6/q6usb.c
@@ -42,7 +42,14 @@ 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;
+	int ret;

    You don't seem to need this variable, just use *return*
snd_soc_usb_find_format(...) >

Thanks for catching this... Will fix it in the next submission I make. Happy holidays!

Thanks
Wesley Cheng




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