[ALSA] Fix pcm-draining of capture stream in PCM middle layer

Fix the draining of PCM capture stream in the PCM middle layer.
snd_pcm_drain() ignored capture streams, but it should change
the state to SNDRV_PCM_DRAINING.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 2 deletions

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index a998f88e3f30..9e495244eee2 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1469,8 +1469,6 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream)
                 }
         }
         up_read(&snd_pcm_link_rwsem);
-        if (! num_drecs)
-                goto _error;
 
         snd_pcm_stream_lock_irq(substream);
         /* resume pause */