snd_echo_vumeters_switch 1703 sound/pci/echoaudio/echoaudio.c static const struct snd_kcontrol_new snd_echo_vumeters_switch = { snd_echo_vumeters_switch 2080 sound/pci/echoaudio/echoaudio.c if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters_switch, chip))) < 0)