From 6b1dd8560179bd3328a3fb024ce1b63b772464fd Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Wed, 11 Dec 2013 15:48:37 +0800 Subject: [PATCH] sch_htb: remove unnecessary NULL pointer judgment It already has a NULL pointer judgment of rtab in qdisc_put_rtab(). Remove the judgment outside of qdisc_put_rtab(). Signed-off-by: Yang Yingliang Signed-off-by: David S. Miller --- net/sched/sch_htb.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index 0e1e38b40025..830c64f25539 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -1337,7 +1337,6 @@ static int htb_change_class(struct Qdisc *sch, u32 classid, struct htb_sched *q = qdisc_priv(sch); struct htb_class *cl = (struct htb_class *)*arg, *parent; struct nlattr *opt = tca[TCA_OPTIONS]; - struct qdisc_rate_table *rtab = NULL, *ctab = NULL; struct nlattr *tb[TCA_HTB_MAX + 1]; struct tc_htb_opt *hopt; u64 rate64, ceil64; @@ -1361,16 +1360,11 @@ static int htb_change_class(struct Qdisc *sch, u32 classid, goto failure; /* Keeping backward compatible with rate_table based iproute2 tc */ - if (hopt->rate.linklayer == TC_LINKLAYER_UNAWARE) { - rtab = qdisc_get_rtab(&hopt->rate, tb[TCA_HTB_RTAB]); - if (rtab) - qdisc_put_rtab(rtab); - } - if (hopt->ceil.linklayer == TC_LINKLAYER_UNAWARE) { - ctab = qdisc_get_rtab(&hopt->ceil, tb[TCA_HTB_CTAB]); - if (ctab) - qdisc_put_rtab(ctab); - } + if (hopt->rate.linklayer == TC_LINKLAYER_UNAWARE) + qdisc_put_rtab(qdisc_get_rtab(&hopt->rate, tb[TCA_HTB_RTAB])); + + if (hopt->ceil.linklayer == TC_LINKLAYER_UNAWARE) + qdisc_put_rtab(qdisc_get_rtab(&hopt->ceil, tb[TCA_HTB_CTAB])); if (!cl) { /* new class */ struct Qdisc *new_q; -- 2.20.1