RF_PARITY_BAD
retcode = RF_PARITY_BAD;
if ((retcode = RF_PARITY_BAD) && parity_corrected && red2_corrected)
case RF_PARITY_BAD:
retcode = RF_PARITY_BAD;
if (retcode == RF_PARITY_BAD)
ret = RF_PARITY_BAD;