[alsa-devel] [COMPRESS] [PATCH] ALSA: compress_core: don't return -EBADFD from poll if paused

Richard Fitzgerald rf at opensource.wolfsonmicro.com
Tue Oct 22 12:26:48 CEST 2013

Pausing audio playback is not an illegal state so it doesn't
seem sensible for poll() to return -EBADFD on a paused stream.
There's also no reason to assume that we can't write more data
to the DSP while playback is paused. Remove the -EBADFD so that
a stream in paused state will still report the buffer
availability from poll(). It is up to the user process to
manage its state so that it knows whether it is paused or not.

Signed-off-by: Richard Fitzgerald <rf at opensource.wolfsonmicro.com>
 sound/core/compress_offload.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index bea523a..30ca133 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -384,8 +384,7 @@ static unsigned int snd_compr_poll(struct file *f, poll_table *wait)
 		return -EFAULT;
-	if (stream->runtime->state == SNDRV_PCM_STATE_PAUSED ||
-			stream->runtime->state == SNDRV_PCM_STATE_OPEN) {
+	if (stream->runtime->state == SNDRV_PCM_STATE_OPEN) {
 		retval = -EBADFD;
 		goto out;

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