net, sched: respect rcu grace period on cls destruction

[karo-tx-linux.git] / net / sched / cls_bpf.c

diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index bb1d5a487081f21f80a3042cd424cf7caedf6b37..0a47ba5e610985d9c19db81a69de5b60db44348b 100644 (file)
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -292,7 +292,6 @@ static bool cls_bpf_destroy(struct tcf_proto *tp, bool force)
                call_rcu(&prog->rcu, __cls_bpf_delete_prog);
        }
 
-       RCU_INIT_POINTER(tp->root, NULL);
        kfree_rcu(head, rcu);
        return true;
 }
@@ -303,9 +302,6 @@ static unsigned long cls_bpf_get(struct tcf_proto *tp, u32 handle)
        struct cls_bpf_prog *prog;
        unsigned long ret = 0UL;
 
-       if (head == NULL)
-               return 0UL;
-
        list_for_each_entry(prog, &head->plist, link) {
                if (prog->handle == handle) {
                        ret = (unsigned long) prog;