snd_ctl_find_numid (9) Linux Manual Page
snd_ctl_find_numid – find the control instance with the given number-id
Synopsis
struct snd_kcontrol *snd_ctl_find_numid(struct snd_card *card, unsigned int numid);Arguments
card
-
- the card instance
numid
- the number-id to search
Description
Finds the control instance with the given number-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.