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Commit 62ba568f authored by Ricardo Biehl Pasquali's avatar Ricardo Biehl Pasquali Committed by Takashi Iwai
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ALSA: pcm: Return 0 when size < start_threshold in capture 



In __snd_pcm_lib_xfer(), when capture, if state is PREPARED
and size is less than start_threshold nothing can be done.
As there is no error, 0 is returned.

Signed-off-by: default avatarRicardo Biehl Pasquali <pasqualirb@gmail.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 5b394b2d

sound/core/pcm_lib.c

+9 −4
Original line number Diff line number Diff line
@@ -2173,11 +2173,16 @@ snd_pcm_sframes_t __snd_pcm_lib_xfer(struct snd_pcm_substream *substream, 
		goto _end_unlock;



	if (!is_playback &&

	    runtime->status->state == SNDRV_PCM_STATE_PREPARED &&

	    size >= runtime->start_threshold) {

	    runtime->status->state == SNDRV_PCM_STATE_PREPARED) {

		if (size >= runtime->start_threshold) {

			err = snd_pcm_start(substream);

			if (err < 0)

				goto _end_unlock;

		} else {

			/* nothing to do */

			err = 0;

			goto _end_unlock;

		}

	}



	runtime->twake = runtime->control->avail_min ? : 1;