1 files changed, 10 insertions, 0 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 65ff61211a85..db3075dd11fe 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -505,6 +505,16 @@ static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream)
             !rtd->dai_link->symmetric_rates)
                 return 0;
 
+        /* This can happen if multiple streams are starting simultaneously -
+         * the second can need to get its constraints before the first has
+         * picked a rate.  Complain and allow the application to carry on.
+         */
+        if (!rtd->rate) {
+                dev_warn(&rtd->dev,
+                         "Not enforcing symmetric_rates due to race\n");
+                return 0;
+        }
+
         dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n", rtd->rate);
 
         ret = snd_pcm_hw_constraint_minmax(substream->runtime,