Commit 62737d44 authored by Roel Kluin's avatar Roel Kluin Committed by Liam Girdwood

regulator/lp3971: vol_map out of bounds in lp3971_{ldo,dcdc}_set_voltage()

After `for (val = LDO_VOL_MIN_IDX; val <= LDO_VOL_MAX_IDX; val++)', if no break
occurs, val reaches LDO_VOL_MIN_IDX + 1, which is out of bounds for
ldo45_voltage_map[] and ldo123_voltage_map[].

Similarly BUCK_TARGET_VOL_MAX_IDX + 1 is out of bounds for buck_voltage_map[].
Signed-off-by: default avatarRoel Kluin <roel.kluin@gmail.com>
Acked-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent 973e9a27
......@@ -183,7 +183,7 @@ static int lp3971_ldo_set_voltage(struct regulator_dev *dev,
if (vol_map[val] >= min_vol)
break;
if (vol_map[val] > max_vol)
if (val > LDO_VOL_MAX_IDX || vol_map[val] > max_vol)
return -EINVAL;
return lp3971_set_bits(lp3971, LP3971_LDO_VOL_CONTR_REG(ldo),
......@@ -272,7 +272,7 @@ static int lp3971_dcdc_set_voltage(struct regulator_dev *dev,
if (vol_map[val] >= min_vol)
break;
if (vol_map[val] > max_vol)
if (val > BUCK_TARGET_VOL_MAX_IDX || vol_map[val] > max_vol)
return -EINVAL;
ret = lp3971_set_bits(lp3971, LP3971_BUCK_TARGET_VOL1_REG(buck),
......
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