diff options
| -rw-r--r-- | sound/usb/pcm.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index c66831ee15f9..e26d37365f02 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -613,6 +613,11 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) subs->last_frame_number = 0; runtime->delay = 0; + /* for playback, submit the URBs now; otherwise, the first hwptr_done + * updates for all URBs would happen at the same time when starting */ + if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) + ret = start_endpoints(subs); + unlock: snd_usb_unlock_shutdown(chip); return ret; @@ -1425,7 +1430,6 @@ static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substrea int cmd) { struct snd_usb_substream *subs = substream->runtime->private_data; - int err; switch (cmd) { case SNDRV_PCM_TRIGGER_START: @@ -1436,14 +1440,6 @@ static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substrea prepare_playback_urb, retire_playback_urb, subs); - if (cmd == SNDRV_PCM_TRIGGER_START) { - err = start_endpoints(subs); - if (err < 0) { - snd_usb_endpoint_set_callback(subs->data_endpoint, - NULL, NULL, NULL); - return err; - } - } subs->running = 1; dev_dbg(&subs->dev->dev, "%d:%d Start Playback PCM\n", subs->cur_audiofmt->iface, |