add_on_replace    113 include/sound/control.h int snd_ctl_replace(struct snd_card *card, struct snd_kcontrol *kcontrol, bool add_on_replace);
add_on_replace    443 sound/core/control.c 		    bool add_on_replace)
add_on_replace    446 sound/core/control.c 				   add_on_replace ? CTL_ADD_ON_REPLACE : CTL_REPLACE);