check_warn_goto_error
check_warn_goto_error(retval, "error %d reading 0x3000 register from device", retval);
check_warn_goto_error(retval, "error %d reading 0x3004 register from device", retval);
check_warn_goto_error(retval, "error %d resetting device", retval);
check_warn_goto_error(retval, "error %d configuring system clock", retval);
check_warn_goto_error(retval, "error %d initialising DDR2 controller", retval);
check_warn_goto_error(retval, "error %d initialising I2C controller", retval);
check_warn_goto_error(retval, "unable to find common mode for display and adapter");