diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index 5b0e1fe6723fcf7c5327bd08058177251dee4509..bb9d1a083299fc02b6aba71cc7e8ca7f17843c57 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -339,13 +339,9 @@ static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
 					     unsigned int new_sel)
 {
 	struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
-	const struct sec_voltage_desc *desc;
-	int reg_id = rdev_get_id(rdev);
-
-	desc = reg_voltage_map[reg_id];
 
 	if ((old_sel < new_sel) && s5m8767->ramp_delay)
-		return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
+		return DIV_ROUND_UP(rdev->desc->uV_step * (new_sel - old_sel),
 					s5m8767->ramp_delay * 1000);
 	return 0;
 }