From 430af8ad9dad82d775d688155e1db1da385d3e7a Mon Sep 17 00:00:00 2001
From: Fengguang Wu <fengguang.wu@intel.com>
Date: Thu, 13 Feb 2014 16:42:43 -0500
Subject: [PATCH] cgroup: fix coccinelle warnings

kernel/cgroup.c:2256:1-3: WARNING: PTR_RET can be used

 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: coccinelle/api/ptr_ret.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Reading git-format-patch failed