tree dc6aaa3fba97e750a79c7717758472d954ab207c
parent 944f750227fa0beb2b440709687415621e2533a4
author Jarek Poplawski <jarkao2@gmail.com> 1224484667 -0700
committer David S. Miller <davem@davemloft.net> 1224484667 -0700

pkt_sched: sch_generic: Fix oops in sch_teql

After these commands:
# modprobe sch_teql
# tc qdisc add dev eth0 root teql0
# tc qdisc del dev eth0 root
we get an oops in teql_destroy() when spin_lock is taken from a null
qdisc_sleeping pointer. It's because at the moment teql0 dev haven't
been activated yet, and a qdisc_root_sleeping() is pointing to noop
qdisc's netdev_queue with qdisc_sleeping uninitialized. This patch
fixes this both for noop and noqueue netdev_queues to avoid similar
problems in the future.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>