ASoC: SOF: clarify use of widget complete flag

Currently, the complete flag is used only for the snd_soc_dapm_scheduler
type widgets to indicate that the pipeline has been set up. All other
widgets do not need it. Add a comment to clarify its usage and set the
complete flag to false only for the scheduler widget in
sof_widget_free().
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220426171743.171061-11-ranjani.sridharan@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/sof-audio.c

@@ -58,8 +58,6 @@ int sof_widget_free(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
 			err = ret;
 	}
 
-	swidget->complete = 0;
-
 	/*
 	 * free the scheduler widget (same as pipe_widget) associated with the current swidget.
 	 * skip for static pipelines
@@ -68,6 +66,7 @@ int sof_widget_free(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget)
 		ret = sof_widget_free(sdev, swidget->pipe_widget);
 		if (ret < 0 && !err)
 			err = ret;
+		swidget->pipe_widget->complete = 0;
 	}
 
 	if (!err)

sound/soc/sof/sof-audio.h

@@ -327,6 +327,10 @@ struct snd_sof_widget {
 	struct snd_soc_component *scomp;
 	int comp_id;
 	int pipeline_id;
+	/*
+	 * complete flag is used to indicate that pipeline set up is complete for scheduler type
+	 * widgets. It is unused for all other widget types.
+	 */
 	int complete;
 	int use_count; /* use_count will be protected by the PCM mutex held by the core */
 	int core;