Commit bbc780f8 authored Nov 21, 2013 by David Herrmann Committed by Greg Kroah-Hartman Dec 08, 2013

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>

parent d0f80f9a

drivers/base/core.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;