1 files changed, 17 insertions, 8 deletions

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index e9d98be190c5..e23e0e7ab26f 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -67,6 +67,8 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram
 	} else {
 		if (new_hw_ptr == ULONG_MAX) {	/* initialization */
 			snd_pcm_sframes_t avail = snd_pcm_playback_hw_avail(runtime);
+			if (avail > runtime->buffer_size)
+				avail = runtime->buffer_size;
 			runtime->silence_filled = avail > 0 ? avail : 0;
 			runtime->silence_start = (runtime->status->hw_ptr +
 						  runtime->silence_filled) %
@@ -287,8 +289,11 @@ int snd_pcm_update_state(struct snd_pcm_substream *substream,
 			return -EPIPE;
 		}
 	}
-	if (avail >= runtime->control->avail_min)
-		wake_up(runtime->twake ? &runtime->tsleep : &runtime->sleep);
+	if (runtime->twake) {
+		if (avail >= runtime->twake)
+			wake_up(&runtime->tsleep);
+	} else if (avail >= runtime->control->avail_min)
+		wake_up(&runtime->sleep);
 	return 0;
 }
 
@@ -1707,7 +1712,7 @@ EXPORT_SYMBOL(snd_pcm_period_elapsed);
  * The available space is stored on availp.  When err = 0 and avail = 0
  * on the capture stream, it indicates the stream is in DRAINING state.
  */
-static int wait_for_avail_min(struct snd_pcm_substream *substream,
+static int wait_for_avail(struct snd_pcm_substream *substream,
 			      snd_pcm_uframes_t *availp)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
@@ -1757,7 +1762,7 @@ static int wait_for_avail_min(struct snd_pcm_substream *substream,
 			avail = snd_pcm_playback_avail(runtime);
 		else
 			avail = snd_pcm_capture_avail(runtime);
-		if (avail >= runtime->control->avail_min)
+		if (avail >= runtime->twake)
 			break;
 	}
  _endloop:
@@ -1820,7 +1825,7 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
 		goto _end_unlock;
 	}
 
-	runtime->twake = 1;
+	runtime->twake = runtime->control->avail_min ? : 1;
 	while (size > 0) {
 		snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
 		snd_pcm_uframes_t avail;
@@ -1833,7 +1838,9 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
 				err = -EAGAIN;
 				goto _end_unlock;
 			}
-			err = wait_for_avail_min(substream, &avail);
+			runtime->twake = min_t(snd_pcm_uframes_t, size,
+					runtime->control->avail_min ? : 1);
+			err = wait_for_avail(substream, &avail);
 			if (err < 0)
 				goto _end_unlock;
 		}
@@ -2042,7 +2049,7 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
 		goto _end_unlock;
 	}
 
-	runtime->twake = 1;
+	runtime->twake = runtime->control->avail_min ? : 1;
 	while (size > 0) {
 		snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
 		snd_pcm_uframes_t avail;
@@ -2060,7 +2067,9 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
 				err = -EAGAIN;
 				goto _end_unlock;
 			}
-			err = wait_for_avail_min(substream, &avail);
+			runtime->twake = min_t(snd_pcm_uframes_t, size,
+					runtime->control->avail_min ? : 1);
+			err = wait_for_avail(substream, &avail);
 			if (err < 0)
 				goto _end_unlock;
 			if (!avail)