From: David S. Miller <davem@davemloft.net>
Date: Wed, 16 Jul 2008 09:23:17 +0000 (-0700)
Subject: pkt_sched: dev_init_scheduler() does not need to lock qdisc tree.
X-Git-Tag: firefly_0821_release~19559^2~65
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=16361127ebed0fb8f9d7cc94c6e137eaf710f676;p=firefly-linux-kernel-4.4.55.git

pkt_sched: dev_init_scheduler() does not need to lock qdisc tree.

We are registering the device, there is no way anyone can get
at this object's qdiscs yet in any meaningful way.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index dd5c4e70abe4..7e078c593194 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -741,10 +741,8 @@ static void dev_init_scheduler_queue(struct net_device *dev,
 
 void dev_init_scheduler(struct net_device *dev)
 {
-	qdisc_lock_tree(dev);
 	netdev_for_each_tx_queue(dev, dev_init_scheduler_queue, &noop_qdisc);
 	dev_init_scheduler_queue(dev, &dev->rx_queue, NULL);
-	qdisc_unlock_tree(dev);
 
 	setup_timer(&dev->watchdog_timer, dev_watchdog, (unsigned long)dev);
 }