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 --- sound/soc/soc-card.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-)
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);