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regulator: max77686: Check pdata->num_regulators earlier

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If this driver only works when pdata->num_regulators == MAX77686_REGULATORS,
let's check it earlier.

Also remove unused num_regulators from struct max77686_data.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2012-06-08 12:03:04 +08:00 committed by Mark Brown
parent d01c3a1e1b
commit ab0d1cbe55
1 changed files with 18 additions and 23 deletions
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41
drivers/regulator/max77686.c
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@ -65,7 +65,6 @@ enum max77686_ramp_rate {
struct max77686_data {
struct device *dev;
struct max77686_dev *iodev;
int num_regulators;
struct regulator_dev **rdev;
int ramp_delay; /* in mV/us */
};
@ -235,6 +234,12 @@ static __devinit int max77686_pmic_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev, "%s\n", __func__);
if (!pdata || pdata->num_regulators != MAX77686_REGULATORS) {
dev_err(&pdev->dev,
"Invalid initial data for regulator's initialiation\n");
return -EINVAL;
}
max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data),
GFP_KERNEL);
if (!max77686)
@ -248,8 +253,6 @@ static __devinit int max77686_pmic_probe(struct platform_device *pdev)
rdev = max77686->rdev;
max77686->dev = &pdev->dev;
max77686->iodev = iodev;
if (pdata)
max77686->num_regulators = pdata->num_regulators;
platform_set_drvdata(pdev, max77686);
max77686->ramp_delay = RAMP_RATE_NO_CTRL; /* Set 0x3 for RAMP */
@ -263,34 +266,26 @@ static __devinit int max77686_pmic_probe(struct platform_device *pdev)
MAX77686_REG_BUCK4CTRL1, MAX77686_RAMP_RATE_MASK,
max77686->ramp_delay << 6);
if (pdata->num_regulators == MAX77686_REGULATORS) {
for (i = 0; i < MAX77686_REGULATORS; i++) {
config.dev = max77686->dev;
config.regmap = iodev->regmap;
config.driver_data = max77686;
config.init_data = pdata->regulators[i].initdata;
for (i = 0; i < MAX77686_REGULATORS; i++) {
config.dev = max77686->dev;
config.regmap = iodev->regmap;
config.driver_data = max77686;
config.init_data = pdata->regulators[i].initdata;
rdev[i] = regulator_register(&regulators[i], &config);
if (IS_ERR(rdev[i])) {
ret = PTR_ERR(rdev[i]);
dev_err(max77686->dev,
rdev[i] = regulator_register(&regulators[i], &config);
if (IS_ERR(rdev[i])) {
ret = PTR_ERR(rdev[i]);
dev_err(max77686->dev,
"regulator init failed for %d\n", i);
rdev[i] = NULL;
goto err;
}
}
} else {
dev_err(max77686->dev,
"Lack of initial data for regulator's initialiation\n");
return -EINVAL;
}
return 0;
err:
for (i = 0; i < MAX77686_REGULATORS; i++) {
if (rdev[i])
regulator_unregister(rdev[i]);
}
while (--i >= 0)
regulator_unregister(rdev[i]);
return ret;
}