[2/3] ASoC: soc-card: Use snd_ctl_find_id_mixer() instead of open-coding

Commit Message

Richard Fitzgerald March 25, 2024, 12:56 p.m. UTC

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 <[e-mail]>
---
 sound/soc/soc-card.c | 21 ++++-----------------
 1 file changed, 4 insertions(+), 17 deletions(-)

Patch

diff --git a/sound/soc/soc-card.c b/sound/soc/soc-card.c
index 8a2f163da6bc..0a3104d4ad23 100644
--- a/sound/soc/soc-card.c
+++ b/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);