[PATCH] driver core: fix device_create() error path

[David Herrmann <dh.herrmann@gmail.com>]

We call put_device() in the error path, which is fine for dev==NULL.
However, in case kobject_set_name_vargs() fails, we have dev!=NULL but
device_initialized() wasn't called, yet.

Fix this by splitting device_register() into explicit calls to
device_add() and an early call to device_initialize().

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
---
 drivers/base/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 34abf4d..4be8911 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1676,6 +1676,7 @@ device_create_groups_vargs(struct class *class, struct device *parent,
 		goto error;
 	}
 
+	device_initialize(dev);
 	dev->devt = devt;
 	dev->class = class;
 	dev->parent = parent;
@@ -1687,7 +1688,7 @@ device_create_groups_vargs(struct class *class, struct device *parent,
 	if (retval)
 		goto error;
 
-	retval = device_register(dev);
+	retval = device_add(dev);
 	if (retval)
 		goto error;
 
-- 
1.8.4.2