diff options
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 6ea646466a07..53d4fc70dbd0 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1556,6 +1556,19 @@ static int regulator_resolve_supply(struct regulator_dev *rdev) } } + /* + * If the supply's parent device is not the same as the + * regulator's parent device, then ensure the parent device + * is bound before we resolve the supply, in case the parent + * device get probe deferred and unregisters the supply. + */ + if (r->dev.parent && r->dev.parent != rdev->dev.parent) { + if (!device_is_bound(r->dev.parent)) { + put_device(&r->dev); + return -EPROBE_DEFER; + } + } + /* Recursively resolve the supply of the supply */ ret = regulator_resolve_supply(r); if (ret < 0) { |