diff --git a/[refs] b/[refs]
index 4368d32fe5ed..fa963cea292f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b32300a4ce78b4df92f33c455ffe644b36f0ff1a
+refs/heads/master: f5e09ef0985ff01af6b4a12954840467f153a41c
diff --git a/trunk/sound/spi/at73c213.c b/trunk/sound/spi/at73c213.c
index aa571152f034..09802e8a6fb8 100644
--- a/trunk/sound/spi/at73c213.c
+++ b/trunk/sound/spi/at73c213.c
@@ -210,7 +210,13 @@ static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream)
 {
 	struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
+	int err;
 
+	/* ensure buffer_size is a multiple of period_size */
+	err = snd_pcm_hw_constraint_integer(runtime,
+					SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 0)
+		return err;
 	snd_at73c213_playback_hw.rate_min = chip->bitrate;
 	snd_at73c213_playback_hw.rate_max = chip->bitrate;
 	runtime->hw = snd_at73c213_playback_hw;