[PATCH 01/11] ASoC: SOF: sof-audio: Treat tplg_ops->route_setup() as optional

[Peter Ujfalusi <peter.ujfalusi@linux.intel.com>]

Other topology ops have been treated as optional, including the route_free.

Handle the route_setup in a conforming way as optional callback.
Note: we do not have checks for the callbacks itself which makes them all
optional in practice.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
---
 sound/soc/sof/sof-audio.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c
index 7306a2649857..2c7d942427c1 100644
--- a/sound/soc/sof/sof-audio.c
+++ b/sound/soc/sof/sof-audio.c
@@ -174,7 +174,6 @@ int sof_route_setup(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *wsourc
 	struct snd_sof_widget *sink_widget = wsink->dobj.private;
 	struct snd_sof_route *sroute;
 	bool route_found = false;
-	int ret;
 
 	/* ignore routes involving virtual widgets in topology */
 	switch (src_widget->id) {
@@ -212,9 +211,12 @@ int sof_route_setup(struct snd_sof_dev *sdev, struct snd_soc_dapm_widget *wsourc
 	if (sroute->setup)
 		return 0;
 
-	ret = ipc_tplg_ops->route_setup(sdev, sroute);
-	if (ret < 0)
-		return ret;
+	if (ipc_tplg_ops->route_setup) {
+		int ret = ipc_tplg_ops->route_setup(sdev, sroute);
+
+		if (ret < 0)
+			return ret;
+	}
 
 	sroute->setup = true;
 	return 0;
-- 
2.39.0