regulator: s5m8767: Allow GPIO 0 to be used as external control

GPIO 0 is a valid GPIO so allow using it as external control for
regulator.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 6 insertions, 14 deletions

diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index 5daa06626f16..c79af943a5c0 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -528,16 +528,6 @@ static int s5m8767_pmic_dt_parse_ds_gpio(struct sec_pmic_dev *iodev,
         return 0;
 }
 
-static void s5m8767_pmic_dt_parse_ext_control_gpio(struct sec_pmic_dev *iodev,
-                struct sec_regulator_data *rdata,
-                struct device_node *reg_np)
-{
-        rdata->ext_control_gpio = of_get_named_gpio(reg_np,
-                        "s5m8767,pmic-ext-control-gpios", 0);
-        if (!gpio_is_valid(rdata->ext_control_gpio))
-                rdata->ext_control_gpio = 0;
-}
-
 static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
                                         struct sec_platform_data *pdata)
 {
@@ -586,7 +576,8 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
                         continue;
                 }
 
-                s5m8767_pmic_dt_parse_ext_control_gpio(iodev, rdata, reg_np);
+                rdata->ext_control_gpio = of_get_named_gpio(reg_np,
+                        "s5m8767,pmic-ext-control-gpios", 0);
 
                 rdata->id = i;
                 rdata->initdata = of_get_regulator_init_data(
@@ -959,8 +950,9 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
                 config.driver_data = s5m8767;
                 config.regmap = iodev->regmap_pmic;
                 config.of_node = pdata->regulators[i].reg_node;
-                config.ena_gpio = config.ena_gpio_flags = 0;
-                if (pdata->regulators[i].ext_control_gpio)
+                config.ena_gpio = -EINVAL;
+                config.ena_gpio_flags = 0;
+                if (gpio_is_valid(pdata->regulators[i].ext_control_gpio))
                         s5m8767_regulator_config_ext_control(s5m8767,
                                         &pdata->regulators[i], &config);
 
@@ -973,7 +965,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
                         return ret;
                 }
 
-                if (pdata->regulators[i].ext_control_gpio) {
+                if (gpio_is_valid(pdata->regulators[i].ext_control_gpio)) {
                         ret = s5m8767_enable_ext_control(s5m8767, rdev);
                         if (ret < 0) {
                                 dev_err(s5m8767->dev,