diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/regulator/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 711fa1722bc..27d062e1395 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1269,7 +1269,9 @@ static int _regulator_enable(struct regulator_dev *rdev) /* 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); |