regulator: da9052: Ensure the selected voltage falls within the specified range
Integer division may truncate the result, use DIV_ROUND_UP to ensure the
selected voltage falls within the specified range.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c
index 319ba51..09915e8 100644
--- a/drivers/regulator/da9052-regulator.c
+++ b/drivers/regulator/da9052-regulator.c
@@ -226,7 +226,7 @@
if (min_uV < info->min_uV)
min_uV = info->min_uV;
- *selector = (min_uV - info->min_uV) / info->step_uV;
+ *selector = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
ret = da9052_list_voltage(rdev, *selector);
if (ret < 0)
@@ -318,10 +318,10 @@
if ((regulator->da9052->chip_id == DA9052) &&
(min_uV >= DA9052_CONST_3uV))
*selector = DA9052_BUCK_PERI_REG_MAP_UPTO_3uV +
- ((min_uV - DA9052_CONST_3uV) /
- (DA9052_BUCK_PERI_3uV_STEP));
+ DIV_ROUND_UP(min_uV - DA9052_CONST_3uV,
+ DA9052_BUCK_PERI_3uV_STEP);
else
- *selector = (min_uV - info->min_uV) / info->step_uV;
+ *selector = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
ret = da9052_list_buckperi_voltage(rdev, *selector);
if (ret < 0)