pkt_sched: remove unnecessary xchg() in packet schedulers
The use of xchg() hasn't been necessary since 2.2.something when proper
locking was added to packet schedulers.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index ca90f6e..2a8b83a 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -102,7 +102,8 @@
return -EINVAL;
if (!new)
new = &noop_qdisc;
- *old = xchg(&flow->q, new);
+ *old = flow->q;
+ flow->q = new;
if (*old)
qdisc_reset(*old);
return 0;