drivers/regulator/pwm-regulator.c:
  In function 'pwm_regulator_init_continuous':
drivers/regulator/pwm-regulator.c:202:22:
  warning: unused variable 'np' [-Wunused-variable]
     struct device_node *np = pdev->dev.of_node;
              ^
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
 static int pwm_regulator_init_continuous(struct platform_device *pdev,
                                         struct pwm_regulator_data *drvdata)
 {
-       struct device_node *np = pdev->dev.of_node;
-
        pwm_regulator_desc.ops = &pwm_regulator_voltage_continuous_ops;
        pwm_regulator_desc.continuous_voltage_range = true;