Find the control instance with the given id
struct snd_kcontrol * snd_ctl_find_id(struct snd_card * card, struct snd_ctl_elem_id * id);
card
the card instance
id
the id to search
Finds the control instance with the given id from the card.
The caller must down card->controls_rwsem before calling this function (if the race condition can happen).
The pointer of the instance if found, or NULL if not.