SND_CTL_FIND_ID(9) Sound Devices SND_CTL_FIND_ID(9)
NAME
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.
Returns the pointer of the instance if found, or NULL if not.
The caller must down card->controls_rwsem before calling this function (if the race condition can happen).
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 SND_CTL_FIND_ID(9)
