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ALSA: usb-audio: Don't start stream for capture at prepare

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commit 83de8f83816e8e15227dac985163e3d433a2bf9d upstream.

The recent change made mistakenly the stream for capture started at
prepare stage.  Add the stream direction check to avoid it.

Fixes: 9c9a3b9da891 ("ALSA: usb-audio: Rename early_playback_start flag with lowlatency_playback")
Link: https://lore.kernel.org/r/20211119102629.7476-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai 2021-11-19 11:26:29 +01:00 committed by Greg Kroah-Hartman
parent 321cd173b8
commit 1236351c29
1 changed files with 2 additions and 1 deletions
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3
sound/usb/pcm.c
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@ -640,7 +640,8 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
runtime->delay = 0;
subs->lowlatency_playback = lowlatency_playback_available(runtime, subs);
if (!subs->lowlatency_playback)
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
!subs->lowlatency_playback)
ret = start_endpoints(subs);
unlock: