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regulator: tps51632: Ensure [base|max]_voltage_uV pdata settings are valid

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If pdata->base_voltage_uV is missing or the settings of pdata->base_voltage_uV
and pdata->max_voltage_uV are out of range, TPS51632_VOLT_VSEL macro
returns wrong vsel.

Thus add checking [base|max]_voltage_uV pdata settings in probe.

Signed-off-by: Axel Lin <[email protected]>
Acked-by: Laxman Dewangan <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
Axel Lin 2012-11-30 16:52:49 +08:00 • committed by Mark Brown
commit dbc705183a
1 changed files with 15 additions and 0 deletions
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15
drivers/regulator/tps51632-regulator.c
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@ -242,6 +242,21 @@ static int __devinit tps51632_probe(struct i2c_client *client,
return -EINVAL;
}
if (pdata->enable_pwm_dvfs) {
if ((pdata->base_voltage_uV < TPS51632_MIN_VOLATGE) ||
(pdata->base_voltage_uV > TPS51632_MAX_VOLATGE)) {
dev_err(&client->dev, "Invalid base_voltage_uV setting\n");
return -EINVAL;
}
if ((pdata->max_voltage_uV) &&
((pdata->max_voltage_uV < TPS51632_MIN_VOLATGE) ||
(pdata->max_voltage_uV > TPS51632_MAX_VOLATGE))) {
dev_err(&client->dev, "Invalid max_voltage_uV setting\n");
return -EINVAL;
}
}
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps) {
dev_err(&client->dev, "Memory allocation failed\n");