4 files changed, 24 insertions, 0 deletions

diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c
index 89b4b3d76539..2a9b90eb6809 100644
--- a/sound/soc/sof/pm.c
+++ b/sound/soc/sof/pm.c
@@ -208,6 +208,8 @@ static int sof_suspend(struct device *dev, bool runtime_suspend)
 	if (target_state == SOF_DSP_PM_D0)
 		goto suspend;
 
+	sof_tear_down_pipelines(dev);
+
 	/* release trace */
 	snd_sof_release_trace(sdev);
 
diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c
index a4b9bb99bced..b52a453ae9d7 100644
--- a/sound/soc/sof/sof-audio.c
+++ b/sound/soc/sof/sof-audio.c
@@ -276,6 +276,7 @@ int sof_restore_pipelines(struct device *dev)
 
 			return ret;
 		}
+		sroute->setup = true;
 	}
 
 	/* restore dai links */
@@ -317,6 +318,20 @@ int sof_restore_pipelines(struct device *dev)
 	return ret;
 }
 
+/* This function doesn't free widgets. It only resets the set up status for all routes */
+void sof_tear_down_pipelines(struct device *dev)
+{
+	struct snd_sof_dev *sdev = dev_get_drvdata(dev);
+	struct snd_sof_route *sroute;
+
+	/*
+	 * No need to protect sroute->setup as this function is called only during the suspend
+	 * callback and all streams should be suspended by then
+	 */
+	list_for_each_entry(sroute, &sdev->route_list, list)
+		sroute->setup = false;
+}
+
 /*
  * Generic object lookup APIs.
  */
diff --git a/sound/soc/sof/sof-audio.h b/sound/soc/sof/sof-audio.h
index 4a1c38c5618d..fe997a80a847 100644
--- a/sound/soc/sof/sof-audio.h
+++ b/sound/soc/sof/sof-audio.h
@@ -118,6 +118,9 @@ struct snd_sof_route {
 
 	struct snd_soc_dapm_route *route;
 	struct list_head list;	/* list in sdev route list */
+	struct snd_sof_widget *src_widget;
+	struct snd_sof_widget *sink_widget;
+	bool setup;
 
 	void *private;
 };
@@ -240,6 +243,7 @@ int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_pa
 
 /* PM */
 int sof_restore_pipelines(struct device *dev);
+void sof_tear_down_pipelines(struct device *dev);
 int sof_set_hw_params_upon_resume(struct device *dev);
 bool snd_sof_stream_suspend_ignored(struct snd_sof_dev *sdev);
 bool snd_sof_dsp_only_d0i3_compatible_stream_active(struct snd_sof_dev *sdev);
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index 60d1db6a9193..58f966ab2e81 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -3501,6 +3501,9 @@ static int sof_route_load(struct snd_soc_component *scomp, int index,
 		sroute->route = route;
 		dobj->private = sroute;
 		sroute->private = connect;
+		sroute->src_widget = source_swidget;
+		sroute->sink_widget = sink_swidget;
+		sroute->setup = true;
 
 		/* add route to route list */
 		list_add(&sroute->list, &sdev->route_list);