[PATCH RFC 1/3] drivers: core: device: set new parent when old parent is NULL

[Yang Xiwen via B4 Relay]

From: Yang Xiwen <forbidden405 at outlook.com>

The old logic does not set the new parent in device_reparent() when old
parent is NULL. It's not desired. Fix it by setting the parent in this
case.

Fixes: cfecbaf4e768 ("dm: core: add support for device re-parenting")
Signed-off-by: Yang Xiwen <forbidden405 at outlook.com>
---
 drivers/core/device.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/core/device.c b/drivers/core/device.c
index 779f371b9d5b..497c32befde7 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -285,6 +285,11 @@ int device_reparent(struct udevice *dev, struct udevice *new_parent)
 	assert(dev);
 	assert(new_parent);
 
+	if (!dev->parent) {
+		dev->parent = new_parent;
+		return 0;
+	}
+
 	device_foreach_child_safe(pos, n, dev->parent) {
 		if (pos->driver != dev->driver)
 			continue;

-- 
2.43.0