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ab3100: fix off-by-one value range checking for voltage selector 

We use voltage selector as an array index for typ_voltages.
Thus the valid range for voltage selector should be 0..voltages_len-1.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Axel Lin 2010-07-26 15:34:14 +08:00 committed by Liam Girdwood
parent b37fa16e78
commit 979da89a9c
1 changed files with 2 additions and 2 deletions
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4
drivers/regulator/ab3100.c
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@ -286,7 +286,7 @@ static int ab3100_list_voltage_regulator(struct regulator_dev *reg,
{
struct ab3100_regulator *abreg = reg->reg_data;
if (selector > abreg->voltages_len)
if (selector >= abreg->voltages_len)
return -EINVAL;
return abreg->typ_voltages[selector];
}
@ -318,7 +318,7 @@ static int ab3100_get_voltage_regulator(struct regulator_dev *reg)
regval &= 0xE0;
regval >>= 5;
if (regval > abreg->voltages_len) {
if (regval >= abreg->voltages_len) {
dev_err(&reg->dev,
"regulator register %02x contains an illegal voltage setting\n",
abreg->regreg);