regulator_check_voltage
ret = regulator_check_voltage(rdev, &min_uV, &max_uV);
ret = regulator_check_voltage(c_rdevs[i], &tmp_min, &tmp_max);
ret = regulator_check_voltage(rdev, &min_uV, &max_uV);
ret = regulator_check_voltage(rdev, &min_uV, &max_uV);
ret = regulator_check_voltage(c_rdevs[i], &tmp_min, &tmp_max);
err = regulator_check_voltage(core_rdev, &core_min_uV, &core_max_uV);
err = regulator_check_voltage(rtc_rdev, &rtc_min_uV, &rtc_max_uV);
err = regulator_check_voltage(cpu_rdev, &cpu_min_uV, &cpu_max_uV);
err = regulator_check_voltage(core_rdev, &core_min_uV, &core_max_uV);
err = regulator_check_voltage(cpu_rdev, &cpu_min_uV, &cpu_max_uV);
err = regulator_check_voltage(core_rdev, &core_min_uV, &core_max_uV);
err = regulator_check_voltage(core_rdev, &core_min_uV, &core_max_uV);
int regulator_check_voltage(struct regulator_dev *rdev,