rear_clfe_zc 303 sound/pci/ice1712/psc724.c static const char *rear_clfe_zc = "Rear Zero Cross Detect Playback Switch"; rear_clfe_zc 338 sound/pci/ice1712/psc724.c spec->wm8766.ctl[WM8766_CTL_ZC_SW].name = rear_clfe_zc;