Function dvb_scan_add_entry 

pub unsafe extern "C" fn dvb_scan_add_entry(
    parms: *mut dvb_v5_fe_parms,
    first_entry: *mut dvb_entry,
    entry: *mut dvb_entry,
    freq: u32,
    shift: u32,
    pol: dvb_sat_polarization,
) -> *mut dvb_entry