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authorRicardo Biehl Pasquali <pasqualirb@gmail.com>2018-08-25 16:53:23 -0300
committerTakashi Iwai <tiwai@suse.de>2018-08-27 07:27:55 +0200
commit62ba568f7aef4beb0eda945a2b2a91b7a2b8f215 (patch)
tree795a9cda7d9fa3cf07f8c3a7d7a61dd53496649b /sound/core
parent5b394b2ddf0347bef56e50c69a58773c94343ff3 (diff)
downloadblackbird-op-linux-62ba568f7aef4beb0eda945a2b2a91b7a2b8f215.tar.gz
blackbird-op-linux-62ba568f7aef4beb0eda945a2b2a91b7a2b8f215.zip
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: Ricardo Biehl Pasquali <pasqualirb@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/pcm_lib.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 4e6110d778bd..7f71c2449af5 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -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) {
- err = snd_pcm_start(substream);
- if (err < 0)
+ 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;
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