snd_ctl_build_ioff
snd_ctl_build_ioff(&info->id, kctl, index_offset);
snd_ctl_build_ioff(&control->id, kctl, index_offset);
snd_ctl_build_ioff(&control->id, kctl, index_offset);
snd_ctl_build_ioff(&uinfo->id, kcontrol, offset);
snd_ctl_build_ioff(&uinfo->id, kcontrol, offset);
snd_ctl_build_ioff(&info->id, kctl, offset);
snd_ctl_build_ioff(&id, kctl, header.numid - id.numid);
snd_ctl_build_ioff(id, kctl, index_offset);
snd_ctl_build_ioff(&id, kctl, jidx);
snd_ctl_build_ioff(&id, emu->ctl_clock_source, 0);
snd_ctl_build_ioff(&id, kctl, idx));
snd_ctl_build_ioff(&id, kctl, num));