snd_ctl_add_vmaster_hook — Add a hook to a vmaster control
int snd_ctl_add_vmaster_hook ( | struct snd_kcontrol * kcontrol, |
void (*hook)
(void *private_data, int), | |
void * private_data); |
kcontrolvmaster kctl element
hookthe hook function
private_datathe private_data pointer to be saved