snd_emu10k1_look_for_ctl
if (snd_emu10k1_look_for_ctl(emu, &id) == NULL)
if (snd_emu10k1_look_for_ctl(emu, &gctl->id))
ctl = snd_emu10k1_look_for_ctl(emu, &gctl->id);
ctl = snd_emu10k1_look_for_ctl(emu, &id);