From: Andrew Morton <akpm@linux-foundation.org>

security/device_cgroup.c: In function 'devcgroup_access_read':
security/device_cgroup.c:280: warning: 'len' may be used uninitialized in this function

Cc: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Daniel Hokka Zakrisson <daniel@hozac.com>
Cc: James Morris <jmorris@namei.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 security/device_cgroup.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN security/device_cgroup.c~cgroups-implement-device-whitelist-v6-fix security/device_cgroup.c
--- a/security/device_cgroup.c~cgroups-implement-device-whitelist-v6-fix
+++ a/security/device_cgroup.c
@@ -277,7 +277,8 @@ static ssize_t devcgroup_access_read(str
 	struct dev_cgroup *devcgroup = cgroup_to_devcgroup(cgroup);
 	int filetype = cft->private;
 	char *buffer;
-	int len, retval;
+	int uninitialized_var(len);
+	int retval;
 
 	if (filetype != DEVCG_ALLOW)
 		return -EINVAL;
_