ASoC: SOF: ipc: Separate the ops checks by functions/topics

Separate the mandatory ops checks by topics (pcm and topology for now) to
be able to provide intuitive feedback on the possible missing ops and to
make it easier to add new mandatory ops checks in the future.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220405172708.122168-9-ranjani.sridharan@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/ipc.c

@@ -1043,6 +1043,7 @@ struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev)
 {
 	struct snd_sof_ipc *ipc;
 	struct snd_sof_ipc_msg *msg;
+	const struct sof_ipc_ops *ops;
 
 	ipc = devm_kzalloc(sdev->dev, sizeof(*ipc), GFP_KERNEL);
 	if (!ipc)
@@ -1062,11 +1063,16 @@ struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev)
 	 * versions, this will need to be modified to use the selected version at runtime.
 	 */
 	ipc->ops = &ipc3_ops;
+	ops = ipc->ops;
 
 	/* check for mandatory ops */
-	if (!ipc->ops->pcm || !ipc->ops->tplg || !ipc->ops->tplg->widget ||
-	    !ipc->ops->tplg->control) {
-		dev_err(sdev->dev, "Invalid IPC ops\n");
+	if (!ops->pcm) {
+		dev_err(sdev->dev, "Missing IPC PCM ops\n");
+		return NULL;
+	}
+
+	if (!ops->tplg || !ops->tplg->widget || !ops->tplg->control) {
+		dev_err(sdev->dev, "Missing IPC topology ops\n");
 		return NULL;
 	}