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path: root/drivers/regulator/lp3971.c
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Diffstat (limited to 'drivers/regulator/lp3971.c')
-rw-r--r--drivers/regulator/lp3971.c58
1 files changed, 29 insertions, 29 deletions
diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c
index 3ea639f29e95..f5532ed79272 100644
--- a/drivers/regulator/lp3971.c
+++ b/drivers/regulator/lp3971.c
@@ -431,20 +431,20 @@ static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val)
return ret;
}
-static int setup_regulators(struct lp3971 *lp3971,
- struct lp3971_platform_data *pdata)
+static int __devinit setup_regulators(struct lp3971 *lp3971,
+ struct lp3971_platform_data *pdata)
{
int i, err;
- int num_regulators = pdata->num_regulators;
- lp3971->num_regulators = num_regulators;
- lp3971->rdev = kzalloc(sizeof(struct regulator_dev *) * num_regulators,
- GFP_KERNEL);
+
+ lp3971->num_regulators = pdata->num_regulators;
+ lp3971->rdev = kcalloc(pdata->num_regulators,
+ sizeof(struct regulator_dev *), GFP_KERNEL);
/* Instantiate the regulators */
- for (i = 0; i < num_regulators; i++) {
- int id = pdata->regulators[i].id;
- lp3971->rdev[i] = regulator_register(&regulators[id],
- lp3971->dev, pdata->regulators[i].initdata, lp3971);
+ for (i = 0; i < pdata->num_regulators; i++) {
+ struct lp3971_regulator_subdev *reg = &pdata->regulators[i];
+ lp3971->rdev[i] = regulator_register(&regulators[reg->id],
+ lp3971->dev, reg->initdata, lp3971);
if (IS_ERR(lp3971->rdev[i])) {
err = PTR_ERR(lp3971->rdev[i]);
@@ -455,10 +455,10 @@ static int setup_regulators(struct lp3971 *lp3971,
}
return 0;
+
error:
- for (i = 0; i < num_regulators; i++)
- if (lp3971->rdev[i])
- regulator_unregister(lp3971->rdev[i]);
+ while (--i >= 0)
+ regulator_unregister(lp3971->rdev[i]);
kfree(lp3971->rdev);
lp3971->rdev = NULL;
return err;
@@ -472,15 +472,17 @@ static int __devinit lp3971_i2c_probe(struct i2c_client *i2c,
int ret;
u16 val;
- lp3971 = kzalloc(sizeof(struct lp3971), GFP_KERNEL);
- if (lp3971 == NULL) {
- ret = -ENOMEM;
- goto err;
+ if (!pdata) {
+ dev_dbg(&i2c->dev, "No platform init data supplied\n");
+ return -ENODEV;
}
+ lp3971 = kzalloc(sizeof(struct lp3971), GFP_KERNEL);
+ if (lp3971 == NULL)
+ return -ENOMEM;
+
lp3971->i2c = i2c;
lp3971->dev = &i2c->dev;
- i2c_set_clientdata(i2c, lp3971);
mutex_init(&lp3971->io_lock);
@@ -493,19 +495,15 @@ static int __devinit lp3971_i2c_probe(struct i2c_client *i2c,
goto err_detect;
}
- if (pdata) {
- ret = setup_regulators(lp3971, pdata);
- if (ret < 0)
- goto err_detect;
- } else
- dev_warn(lp3971->dev, "No platform init data supplied\n");
+ ret = setup_regulators(lp3971, pdata);
+ if (ret < 0)
+ goto err_detect;
+ i2c_set_clientdata(i2c, lp3971);
return 0;
err_detect:
- i2c_set_clientdata(i2c, NULL);
kfree(lp3971);
-err:
return ret;
}
@@ -513,11 +511,13 @@ static int __devexit lp3971_i2c_remove(struct i2c_client *i2c)
{
struct lp3971 *lp3971 = i2c_get_clientdata(i2c);
int i;
+
+ i2c_set_clientdata(i2c, NULL);
+
for (i = 0; i < lp3971->num_regulators; i++)
- if (lp3971->rdev[i])
- regulator_unregister(lp3971->rdev[i]);
+ regulator_unregister(lp3971->rdev[i]);
+
kfree(lp3971->rdev);
- i2c_set_clientdata(i2c, NULL);
kfree(lp3971);
return 0;