| Message ID | 20211007083528.4184-1-tiwai@suse.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ALSA: usb-audio: Pass JOINT_DUPLEX info flag for implicit fb streams | expand |
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index f09c7380a923..3bb095a3c9b6 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1080,6 +1080,13 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre if (err < 0) return err; + list_for_each_entry(fp, &subs->fmt_list, list) { + if (fp->implicit_fb) { + runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; + break; + } + } + return 0; }
When a stream is in the implicit feedback mode, it's more or less tied with a capture stream. Passing SNDRV_PCM_INFO_JOINT_DUPLEX may help for user-space to understand the situation. Signed-off-by: Takashi Iwai <tiwai@suse.de> --- sound/usb/pcm.c | 7 +++++++ 1 file changed, 7 insertions(+)