[alsa-devel] [PATCH] ALSA: Add SNDRV_PCM_STATE_PAUSED case in wait_for_avail function

JongHo Kim furmuwon at gmail.com
Mon Dec 16 09:56:23 CET 2013

When the process is sleeping at the SNDRV_PCM_STATE_PAUSED
state from the wait_for_avail function,
the sleep process will be woken by timeout(10 seconds).
Even if the sleep process wake up by timeout, by this patch,
the process will continue with sleep and wait for the other state.

Signed-off-by: JongHo Kim <furmuwon at gmail.com>
 sound/core/pcm_lib.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 6e03b46..a210467 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1937,6 +1937,8 @@ static int wait_for_avail(struct snd_pcm_substream
                case SNDRV_PCM_STATE_DISCONNECTED:
                        err = -EBADFD;
                        goto _endloop;
+               case SNDRV_PCM_STATE_PAUSED:
+                       continue;
                if (!tout) {
                        snd_printd("%s write error (DMA or IRQ trouble?)\n",

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