diff options
| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2020-11-25 20:25:47 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-11-26 16:08:15 +0300 |
| commit | 55cca73931c3a08eb74f5ad06e88304af7a292e0 (patch) | |
| tree | 51fc1fa1d293addeceef42688992f98f4ede7485 /drivers/regulator/core.c | |
| parent | 33f369efbce15e034db4faabeec8502d7d236859 (diff) | |
| download | linux-55cca73931c3a08eb74f5ad06e88304af7a292e0.tar.xz | |
regulator: core: return zero for selectors lower than linear_min_sel
Selectors lower than linear_min_sel should not be considered invalid.
Thus return zero in case _regulator_list_voltage(),
regulator_list_hardware_vsel() or regulator_list_voltage_table()
receives such selectors as argument.
Fixes: bdcd1177578c ("regulator: core: validate selector against linear_min_sel")
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1606325147-606-1-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 85bf278c9378..2d5d5f3bac62 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2958,9 +2958,10 @@ static int _regulator_list_voltage(struct regulator_dev *rdev, return rdev->desc->fixed_uV; if (ops->list_voltage) { - if (selector >= rdev->desc->n_voltages || - selector < rdev->desc->linear_min_sel) + if (selector >= rdev->desc->n_voltages) return -EINVAL; + if (selector < rdev->desc->linear_min_sel) + return 0; if (lock) regulator_lock(rdev); ret = ops->list_voltage(rdev, selector); @@ -3110,9 +3111,10 @@ int regulator_list_hardware_vsel(struct regulator *regulator, struct regulator_dev *rdev = regulator->rdev; const struct regulator_ops *ops = rdev->desc->ops; - if (selector >= rdev->desc->n_voltages || - selector < rdev->desc->linear_min_sel) + if (selector >= rdev->desc->n_voltages) return -EINVAL; + if (selector < rdev->desc->linear_min_sel) + return 0; if (ops->set_voltage_sel != regulator_set_voltage_sel_regmap) return -EOPNOTSUPP; |