[PATCH v3 2/3] ASoC: SOF: sof-audio: skip prepare/unprepare if swidget is NULL

[Peter Ujfalusi]

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

Skip preparing/unpreparing widgets if the swidget pointer is NULL. This
will be true in the case of virtual widgets in topology that were added
for reusing the legacy HDA machine driver with SOF.

Fixes: 9862dcf70245 ("ASoC: SOF: don't unprepare widget used other pipelines")
Cc: <stable at vger.kernel.org> # 6.1
Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi at linux.intel.com>
Reviewed-by: Rander Wang <rander.wang at intel.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi at linux.intel.com>
---
 sound/soc/sof/sof-audio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c
index e52ef62ce7a3..8c114e6a23c6 100644
--- a/sound/soc/sof/sof-audio.c
+++ b/sound/soc/sof/sof-audio.c
@@ -272,7 +272,7 @@ sof_unprepare_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widg
 	struct snd_soc_dapm_path *p;
 
 	/* return if the widget is in use or if it is already unprepared */
-	if (!swidget->prepared || swidget->use_count > 0)
+	if (!swidget || !swidget->prepared || swidget->use_count > 0)
 		return;
 
 	if (widget_ops[widget->id].ipc_unprepare)
@@ -303,7 +303,7 @@ sof_prepare_widgets_in_path(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget
 	struct snd_soc_dapm_path *p;
 	int ret;
 
-	if (!widget_ops[widget->id].ipc_prepare || swidget->prepared)
+	if (!swidget || !widget_ops[widget->id].ipc_prepare || swidget->prepared)
 		goto sink_prepare;
 
 	/* prepare the source widget */
-- 
2.39.0