break;
        default:
                return -EINVAL;
-               break;
        }
 
        data[4] = divisor;
        switch (thisboard->layout) {
        case LAYOUT_4020:
                return ai_config_master_clock_4020(dev, data);
-               break;
        default:
                return -EINVAL;
-               break;
        }
 
        return -EINVAL;
        switch (id) {
        case INSN_CONFIG_ALT_SOURCE:
                return ai_config_calibration_source(dev, data);
-               break;
        case INSN_CONFIG_BLOCK_SIZE:
                return ai_config_block_size(dev, data);
-               break;
        case INSN_CONFIG_TIMER_1:
                return ai_config_master_clock(dev, data);
-               break;
        default:
                return -EINVAL;
-               break;
        }
        return -EINVAL;
 }
                break;
        default:
                return 0;
-               break;
        }
        return count - 3;
 }
        default:
                comedi_error(dev, "invalid caldac channel\n");
                return -1;
-               break;
        }
        serial_bytes[1] = NOT_CLEAR_REGISTERS | ((value >> 8) & 0xf);
        serial_bytes[2] = value & 0xff;