diff options
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index f1d10c974cd..ba521f0f0fa 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -911,7 +911,7 @@ out: } /** - * set_consumer_device_supply: Bind a regulator to a symbolic supply + * set_consumer_device_supply - Bind a regulator to a symbolic supply * @rdev: regulator source * @consumer_dev: device the supply applies to * @consumer_dev_name: dev_name() string for device supply applies to @@ -1052,7 +1052,6 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, printk(KERN_WARNING "%s: could not add device link %s err %d\n", __func__, dev->kobj.name, err); - device_remove_file(dev, ®ulator->dev_attr); goto link_name_err; } } @@ -1268,13 +1267,17 @@ static int _regulator_enable(struct regulator_dev *rdev) { int ret, delay; - /* do we need to enable the supply regulator first */ - if (rdev->supply) { - ret = _regulator_enable(rdev->supply); - if (ret < 0) { - printk(KERN_ERR "%s: failed to enable %s: %d\n", - __func__, rdev_get_name(rdev), ret); - return ret; + if (rdev->use_count == 0) { + /* do we need to enable the supply regulator first */ + if (rdev->supply) { + mutex_lock(&rdev->supply->mutex); + ret = _regulator_enable(rdev->supply); + mutex_unlock(&rdev->supply->mutex); + if (ret < 0) { + printk(KERN_ERR "%s: failed to enable %s: %d\n", + __func__, rdev_get_name(rdev), ret); + return ret; + } } } @@ -1313,10 +1316,12 @@ static int _regulator_enable(struct regulator_dev *rdev) if (ret < 0) return ret; - if (delay >= 1000) + if (delay >= 1000) { mdelay(delay / 1000); - else if (delay) + udelay(delay % 1000); + } else if (delay) { udelay(delay); + } } else if (ret < 0) { printk(KERN_ERR "%s: is_enabled() failed for %s: %d\n", @@ -1359,6 +1364,7 @@ static int _regulator_disable(struct regulator_dev *rdev, struct regulator_dev **supply_rdev_ptr) { int ret = 0; + *supply_rdev_ptr = NULL; if (WARN(rdev->use_count <= 0, "unbalanced disables for %s\n", @@ -2346,6 +2352,7 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, if (init_data->supply_regulator && init_data->supply_regulator_dev) { dev_err(dev, "Supply regulator specified by both name and dev\n"); + ret = -EINVAL; goto scrub; } @@ -2364,6 +2371,7 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, if (!found) { dev_err(dev, "Failed to find supply %s\n", init_data->supply_regulator); + ret = -ENODEV; goto scrub; } |