ASoC: soc-card: add snd_soc_card_add_dai_link()

Card related function should be implemented at soc-card now.
This patch adds it.

This patch adds missing return when error case.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/87o8q8zv2m.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-card.h

@@ -35,6 +35,9 @@ int snd_soc_card_set_bias_level_post(struct snd_soc_card *card,
 				     struct snd_soc_dapm_context *dapm,
 				     enum snd_soc_bias_level level);
 
+int snd_soc_card_add_dai_link(struct snd_soc_card *card,
+			      struct snd_soc_dai_link *dai_link);
+
 /* device driver data */
 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
 					    void *data)

sound/soc/soc-card.c

@@ -203,3 +203,15 @@ int snd_soc_card_set_bias_level_post(struct snd_soc_card *card,
 
 	return soc_card_ret(card, ret);
 }
+
+int snd_soc_card_add_dai_link(struct snd_soc_card *card,
+			      struct snd_soc_dai_link *dai_link)
+{
+	int ret = 0;
+
+	if (card->add_dai_link)
+		ret = card->add_dai_link(card, dai_link);
+
+	return soc_card_ret(card, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_card_add_dai_link);

sound/soc/soc-core.c

@@ -978,8 +978,9 @@ int snd_soc_add_pcm_runtime(struct snd_soc_card *card,
 	/*
 	 * Notify the machine driver for extra initialization
 	 */
-	if (card->add_dai_link)
-		card->add_dai_link(card, dai_link);
+	ret = snd_soc_card_add_dai_link(card, dai_link);
+	if (ret < 0)
+		return ret;
 
 	if (dai_link->ignore)
 		return 0;