net-sched: change tcf_destroy_chain() to clear start of filter list

Pass double tcf_proto pointers to tcf_destroy_chain() to make it
clear the start of the filter list for more consistency.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 5 deletions

diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 09969c1fbc08..2a3c97f7dc63 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1704,7 +1704,7 @@ static void cbq_destroy_class(struct Qdisc *sch, struct cbq_class *cl)
 
         BUG_TRAP(!cl->filters);
 
-        tcf_destroy_chain(cl->filter_list);
+        tcf_destroy_chain(&cl->filter_list);
         qdisc_destroy(cl->q);
         qdisc_put_rtab(cl->R_tab);
         gen_kill_estimator(&cl->bstats, &cl->rate_est);
@@ -1728,10 +1728,8 @@ cbq_destroy(struct Qdisc* sch)
          * be bound to classes which have been destroyed already. --TGR '04
          */
         for (h = 0; h < 16; h++) {
-                for (cl = q->classes[h]; cl; cl = cl->next) {
-                        tcf_destroy_chain(cl->filter_list);
-                        cl->filter_list = NULL;
-                }
+                for (cl = q->classes[h]; cl; cl = cl->next)
+                        tcf_destroy_chain(&cl->filter_list);
         }
         for (h = 0; h < 16; h++) {
                 struct cbq_class *next;