[PATCH] cgroup: fix cgroup_css() invocation in css_from_id()

[Tejun Heo]

ca8bdcaff0 ("cgroup: make cgroup_css() take cgroup_subsys * instead
and allow NULL subsys") missed one conversion in css_from_id(), which
was newly added.  As css_from_id() doesn't have any user yet, this
doesn't break anything other than generating a build warning.

Convert it.

Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
---
 kernel/cgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index e76698d..b5f4989 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5729,7 +5729,7 @@ struct cgroup_subsys_state *css_from_id(int id, struct cgroup_subsys *ss)
 
 	cgrp = idr_find(&ss->root->cgroup_idr, id);
 	if (cgrp)
-		return cgroup_css(cgrp, ss->subsys_id);
+		return cgroup_css(cgrp, ss);
 	return NULL;
 }
 
-- 
1.8.3.1
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