[PATCH 01/24] kobject: return actual error on kset_create_and_add

[Jeff Liu <jeff.liu@oracle.com>]

From: Jie Liu <jeff.liu@oracle.com>

It's better to return the actual error rather than NULL because
kset_register() can failed due to other reasons.

Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David S. Miller <davem@davemloft.net>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: James E.J. Bottomley <JBottomley@parallels.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: Benny Halevy <bhalevy@primarydata.com>
Cc: Christine Caulfield <ccaulfie@redhat.com>
Cc: David Teigland <teigland@redhat.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Changman Lee <cm224.lee@samsung.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
---
 lib/kobject.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/kobject.c b/lib/kobject.c
index 58751bb..538c617 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -919,11 +919,11 @@ struct kset *kset_create_and_add(const char *name,
 
 	kset = kset_create(name, uevent_ops, parent_kobj);
 	if (!kset)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	error = kset_register(kset);
 	if (error) {
 		kfree(kset);
-		return NULL;
+		return ERR_PTR(error);
 	}
 	return kset;
 }
-- 
1.8.3.2