[PATCH v6 2/8] power: regulator: palmas: fix ldoln and ldousb detection

[Svyatoslav Ryhel]

dev->driver_data will carry the tail of ldo if there is a number and
if there is no number it will be an error code, anyway it will not be
zero. This results in a wrong ldo regulator detection.

To avoid this check for non-numerical ldo first and then manipulate
dev->driver_data.

Signed-off-by: Svyatoslav Ryhel <clamor95 at gmail.com>
---
 drivers/power/regulator/palmas_regulator.c | 24 +++++++++++++---------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/drivers/power/regulator/palmas_regulator.c b/drivers/power/regulator/palmas_regulator.c
index 3c4eb83be7..d615e94734 100644
--- a/drivers/power/regulator/palmas_regulator.c
+++ b/drivers/power/regulator/palmas_regulator.c
@@ -301,19 +301,23 @@ static int palmas_ldo_probe(struct udevice *dev)
 
 	uc_pdata->type = REGULATOR_TYPE_LDO;
 
-	if (dev->driver_data) {
+	/* check for ldoln and ldousb cases */
+	if (!strcmp("ldoln", dev->name)) {
+		uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][9];
+		uc_pdata->volt_reg = palmas_ldo_volt[type][9];
+		return 0;
+	}
+
+	if (!strcmp("ldousb", dev->name)) {
+		uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][10];
+		uc_pdata->volt_reg = palmas_ldo_volt[type][10];
+		return 0;
+	}
+
+	if (dev->driver_data > 0) {
 		u8 idx = dev->driver_data - 1;
 		uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][idx];
 		uc_pdata->volt_reg = palmas_ldo_volt[type][idx];
-	} else {
-		/* check for ldoln and ldousb cases */
-		if (!strcmp("ldoln", dev->name)) {
-			uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][9];
-			uc_pdata->volt_reg = palmas_ldo_volt[type][9];
-		} else if (!strcmp("ldousb", dev->name)) {
-			uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][10];
-			uc_pdata->volt_reg = palmas_ldo_volt[type][10];
-		}
 	}
 
 	return 0;
-- 
2.39.2