Fix avail_min=0 problem.

3 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index e951430..1274c20 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Version 0.0.5:
+	* Fix the bug that avail_min is cleared, which screwed up poll
+	  return condition
+
 Version 0.0.4:
 	* Fix the missing return from _snd_mixer_selem_get_volume_range()
 	* Fix the check of stop_threshold in snd_pcm_avail_update().
diff --git a/src/pcm.c b/src/pcm.c
index b61fe21..5e3b455 100644
--- a/src/pcm.c
+++ b/src/pcm.c
@@ -857,6 +857,7 @@ static int snd_pcm_hw_mmap_status(snd_pcm_t *pcm)
 		pcm->mmap_status = NULL;
 		goto no_mmap;
 	}
+	pcm->mmap_control->avail_min = 1;
 	return 0;
 
  no_mmap:
@@ -865,6 +866,7 @@ static int snd_pcm_hw_mmap_status(snd_pcm_t *pcm)
 		return -ENOMEM;
 	pcm->mmap_status = &pcm->sync_ptr->s.status;
 	pcm->mmap_control = &pcm->sync_ptr->c.control;
+	pcm->mmap_control->avail_min = 1;
 	_snd_pcm_sync_ptr(pcm, 0);
 	return 0;
 }
diff --git a/src/pcm_params.c b/src/pcm_params.c
index a4e73e2..6869fd5 100644
--- a/src/pcm_params.c
+++ b/src/pcm_params.c
@@ -1052,6 +1052,7 @@ int snd_pcm_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params)
 	if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_SW_PARAMS, params) < 0)
 		return -errno;
 	pcm->sw_params = *params;
+	pcm->mmap_control->avail_min = params->avail_min;
 	return 0;
 }