snd_ctl_find_numid
struct snd_kcontrol *snd_ctl_find_numid(struct snd_card *card, unsigned int numid);
kctl = snd_ctl_find_numid(file->card, header.numid);
EXPORT_SYMBOL(snd_ctl_find_numid);
return snd_ctl_find_numid(card, id->numid);
kctl = snd_ctl_find_numid(card, numid);
kctl = snd_ctl_find_numid(card, numid);
kctl = snd_ctl_find_numid(card, numid);
kctl = snd_ctl_find_numid(card, numid);
snd_ctl_remove(card, snd_ctl_find_numid(card, idx));