hook_only         237 include/sound/control.h void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
hook_only         466 sound/core/vmaster.c void snd_ctl_sync_vmaster(struct snd_kcontrol *kcontrol, bool hook_only)
hook_only         474 sound/core/vmaster.c 	if (!hook_only) {