ASoC: soc-card: Use snd_ctl_find_id_mixer() instead of open-coding

Use the snd_ctl_find_id_mixer[_locked]() wrapper in
snd_soc_card_get_kcontrol[_locked]() instead of open-coding a custom
list walk of the card controls list.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://msgid.link/r/20240401100210.61277-3-rf@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-card.c

@@ -32,33 +32,20 @@ static inline int _soc_card_ret(struct snd_soc_card *card,
 struct snd_kcontrol *snd_soc_card_get_kcontrol_locked(struct snd_soc_card *soc_card,
 						      const char *name)
 {
-	struct snd_card *card = soc_card->snd_card;
-	struct snd_kcontrol *kctl;
-
-	/* must be held read or write */
-	lockdep_assert_held(&card->controls_rwsem);
-
 	if (unlikely(!name))
 		return NULL;
 
-	list_for_each_entry(kctl, &card->controls, list)
-		if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
-			return kctl;
-	return NULL;
+	return snd_ctl_find_id_mixer_locked(soc_card->snd_card, name);
 }
 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol_locked);
 
 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
 					       const char *name)
 {
-	struct snd_card *card = soc_card->snd_card;
-	struct snd_kcontrol *kctl;
-
-	down_read(&card->controls_rwsem);
-	kctl = snd_soc_card_get_kcontrol_locked(soc_card, name);
-	up_read(&card->controls_rwsem);
+	if (unlikely(!name))
+		return NULL;
 
-	return kctl;
+	return snd_ctl_find_id_mixer(soc_card->snd_card, name);
 }
 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);