[PATCH 03/18] ASoC: SOF: sof-audio: Set up/free DAI/AIF widgets only once

[Peter Ujfalusi]

From: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>

Calling the sof_widget_setup/free() for the DAI/AIF widgets inside the
snd_soc_dapm_widget_for_each_sink_path() loop will end up setting up or
freeing the widget multiple times if there are multiple paths leaving
the widget. Fix this by moving the widget setup/free for the starting
widget in each path outside the loop.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi at linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi at linux.intel.com>
---
 sound/soc/sof/sof-audio.c | 48 +++++++++++++++------------------------
 1 file changed, 18 insertions(+), 30 deletions(-)

diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c
index 2dff3ae25d27..572ac6a0c9ac 100644
--- a/sound/soc/sof/sof-audio.c
+++ b/sound/soc/sof/sof-audio.c
@@ -358,19 +358,16 @@ static int sof_free_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dap
 	int err;
 	int ret = 0;
 
-	/* free all widgets even in case of error to keep use counts balanced */
+	if (widget->dobj.private) {
+		err = sof_widget_free(sdev, widget->dobj.private);
+		if (err < 0)
+			ret = err;
+	}
+
+	/* free all widgets in the sink paths even in case of error to keep use counts balanced */
 	snd_soc_dapm_widget_for_each_sink_path(widget, p) {
-		if (!p->walking && p->sink->dobj.private && widget->dobj.private) {
+		if (!p->walking) {
 			p->walking = true;
-			if (WIDGET_IS_AIF_OR_DAI(widget->id)) {
-				err = sof_widget_free(sdev, widget->dobj.private);
-				if (err < 0)
-					ret = err;
-			}
-
-			err = sof_widget_free(sdev, p->sink->dobj.private);
-			if (err < 0)
-				ret = err;
 
 			err = sof_free_widgets_in_path(sdev, p->sink, dir);
 			if (err < 0)
@@ -393,32 +390,23 @@ static int sof_set_up_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_d
 	struct snd_soc_dapm_path *p;
 	int ret;
 
+	if (widget->dobj.private) {
+		ret = sof_widget_setup(sdev, widget->dobj.private);
+		if (ret < 0)
+			return ret;
+	}
+
 	snd_soc_dapm_widget_for_each_sink_path(widget, p) {
-		if (!p->walking && p->sink->dobj.private && widget->dobj.private) {
+		if (!p->walking) {
 			p->walking = true;
-			if (WIDGET_IS_AIF_OR_DAI(widget->id)) {
-				ret = sof_widget_setup(sdev, widget->dobj.private);
-				if (ret < 0)
-					goto out;
-			}
-
-			ret = sof_widget_setup(sdev, p->sink->dobj.private);
-			if (ret < 0) {
-				if (WIDGET_IS_AIF_OR_DAI(widget->id))
-					sof_widget_free(sdev, widget->dobj.private);
-				goto out;
-			}
 
 			ret = sof_set_up_widgets_in_path(sdev, p->sink, dir);
+			p->walking = false;
 			if (ret < 0) {
-				if (WIDGET_IS_AIF_OR_DAI(widget->id))
+				if (widget->dobj.private)
 					sof_widget_free(sdev, widget->dobj.private);
-				sof_widget_free(sdev, p->sink->dobj.private);
-			}
-out:
-			p->walking = false;
-			if (ret < 0)
 				return ret;
+			}
 		}
 	}
 
-- 
2.39.1