From: David Herrmann <dh.herrmann@gmail.com>
Date: Thu, 21 Nov 2013 19:15:48 +0000 (+0100)
Subject: driver core: fix device_create() error path
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=bbc780f8bab52fef1784151d3c4982cb1143edd2;p=openwrt%2Fstaging%2Fblogic.git

driver core: fix device_create() error path

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 67b180d855b2..aab43fbb8336 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1603,6 +1603,7 @@ device_create_groups_vargs(struct class *class, struct device *parent,
 		goto error;
 	}
 
+	device_initialize(dev);
 	dev->devt = devt;
 	dev->class = class;
 	dev->parent = parent;
@@ -1614,7 +1615,7 @@ 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;