From f3f6c61452e28ffdf93b101555546af8ef63def5 Mon Sep 17 00:00:00 2001 From: Jeeja KP Date: Fri, 2 Sep 2016 21:49:44 +0530 Subject: [PATCH] ALSA: pcm: Fix avail to return error if stream is suspended When the stream is in suspended state some applications wait on "Stream Pipe Error" in response to snd_pcm_avail call to resume the stream. In the current implementation snd_pcm_avail() returns zero when the stream is in suspended state. This causes application to enter in infinite loop for frames to be available. "Stream pipe Error" code is getting returned for read/write call when the stream is in suspended state. Similarly update snd_pcm_avail to return -ESTRPIPE. Signed-off-by: Jeeja KP Signed-off-by: Takashi Iwai --- sound/core/pcm_native.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index c61fd50f771f..9d33c1e85c79 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -2637,9 +2637,11 @@ static int snd_pcm_hwsync(struct snd_pcm_substream *substream) break; /* Fall through */ case SNDRV_PCM_STATE_PREPARED: - case SNDRV_PCM_STATE_SUSPENDED: err = 0; break; + case SNDRV_PCM_STATE_SUSPENDED: + err = -ESTRPIPE; + break; case SNDRV_PCM_STATE_XRUN: err = -EPIPE; break;