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-rw-r--r--kernel/cgroup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 36fc0ff506c3..78f6d18ff0af 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -6162,7 +6162,7 @@ struct cgroup_subsys_state *css_tryget_online_from_dir(struct dentry *dentry,
struct cgroup_subsys_state *css_from_id(int id, struct cgroup_subsys *ss)
{
WARN_ON_ONCE(!rcu_read_lock_held());
- return id > 0 ? idr_find(&ss->css_idr, id) : NULL;
+ return idr_find(&ss->css_idr, id);
}
/**