Revert "cgroup: Avoid -Wstringop-overflow warnings"

This reverts commit 36de5f303ca1bd6fce74815ef17ef3d8ff8737b5.

The commit caused boot failures on some configurations due to cgroup
hierarchies not being created at all.

Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 1404e8e..065bebb 100644 (file)
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1198,9 +1198,6 @@ static struct css_set *find_css_set(struct css_set *old_cset,
        unsigned long key;
        int ssid;
 
-       if (!CGROUP_HAS_SUBSYS_CONFIG)
-               return NULL;
-
        lockdep_assert_held(&cgroup_mutex);
 
        /* First see if we already have a cgroup group that matches
@@ -6020,9 +6017,6 @@ int __init cgroup_init(void)
        struct cgroup_subsys *ss;
        int ssid;
 
-       if (!CGROUP_HAS_SUBSYS_CONFIG)
-               return -EINVAL;
-
        BUILD_BUG_ON(CGROUP_SUBSYS_COUNT > 16);
        BUG_ON(cgroup_init_cftypes(NULL, cgroup_base_files));
        BUG_ON(cgroup_init_cftypes(NULL, cgroup_psi_files));