snd_ctl_find_id (9) Linux Manual Page
snd_ctl_find_id – find the control instance with the given id
Synopsis
struct snd_kcontrol *snd_ctl_find_id(struct snd_card *card, struct snd_ctl_elem_id *id);Arguments
card
-
- the card instance
id
- the id to search
Description
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).
Return
The pointer of the instance if found, or NULL if not.