ASoC: rt5645: Adds push button support for rt5650

[mirror_ubuntu-zesty-kernel.git] / net / sched / cls_bpf.c

diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index 5c4171c5d2bd367188344186f424782bc8baba63..91bd9c19471d58218cb340a2a871c8fe0ac8cd34 100644 (file)
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -66,6 +66,9 @@ static int cls_bpf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
        struct cls_bpf_prog *prog;
        int ret = -1;
 
+       if (unlikely(!skb_mac_header_was_set(skb)))
+               return -1;
+
        /* Needed here for accessing maps. */
        rcu_read_lock();
        list_for_each_entry_rcu(prog, &head->plist, link) {