[PKT_SCHED]: Remove unnecessary memsets in packet schedulers

This patch removes some more unnecessary memsets in packet
schedulers. The qdisc's private data is already set to 0
in qdisc_create/qdisc_create_dflt.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@redhat.com>

net/sched/sch_atm.c

@@ -573,7 +573,6 @@ static int atm_tc_init(struct Qdisc *sch,struct rtattr *opt)
 	struct atm_qdisc_data *p = PRIV(sch);
 
 	DPRINTK("atm_tc_init(sch %p,[qdisc %p],opt %p)\n",sch,p,opt);
-	memset(p,0,sizeof(*p));
 	p->flows = &p->link;
 	if(!(p->link.q = qdisc_create_dflt(sch->dev,&pfifo_qdisc_ops)))
 		p->link.q = &noop_qdisc;

net/sched/sch_dsmark.c

@@ -331,8 +331,6 @@ int dsmark_init(struct Qdisc *sch,struct rtattr *opt)
 	    !tb[TCA_DSMARK_INDICES-1] ||
 	    RTA_PAYLOAD(tb[TCA_DSMARK_INDICES-1]) < sizeof(__u16))
                 return -EINVAL;
-	memset(p,0,sizeof(*p));
-	p->filter_list = NULL;
 	p->indices = *(__u16 *) RTA_DATA(tb[TCA_DSMARK_INDICES-1]);
 	if (!p->indices)
 		return -EINVAL;

net/sched/sch_hfsc.c

@@ -1530,7 +1530,6 @@ hfsc_init_qdisc(struct Qdisc *sch, struct rtattr *opt)
 		return -EINVAL;
 	qopt = RTA_DATA(opt);
 
-	memset(q, 0, sizeof(struct hfsc_sched));
 	sch->stats_lock = &sch->dev->queue_lock;
 
 	q->defcls = qopt->defcls;

net/sched/sch_htb.c

@@ -1277,7 +1277,6 @@ static int htb_init(struct Qdisc *sch, struct rtattr *opt)
 				HTB_VER >> 16,HTB_VER & 0xffff,gopt->version);
 		return -EINVAL;
 	}
-	memset(q,0,sizeof(*q));
 	q->debug = gopt->debug;
 	HTB_DBG(0,1,"htb_init sch=%p handle=%X r2q=%d\n",sch,sch->handle,gopt->rate2quantum);
 

net/sched/sch_ingress.c

@@ -289,9 +289,6 @@ int ingress_init(struct Qdisc *sch,struct rtattr *opt)
 #endif
 #endif
                                                                                 
-	if (NULL == p)
-		goto error;
-
 #ifndef CONFIG_NET_CLS_ACT
 #ifdef CONFIG_NETFILTER
 	if (!nf_registered) {
@@ -305,8 +302,6 @@ int ingress_init(struct Qdisc *sch,struct rtattr *opt)
 #endif
 
 	DPRINTK("ingress_init(sch %p,[qdisc %p],opt %p)\n",sch,p,opt);
-	memset(p, 0, sizeof(*p));
-	p->filter_list = NULL;
 	p->q = &noop_qdisc;
 	return 0;
 error:
@@ -346,9 +341,6 @@ static void ingress_destroy(struct Qdisc *sch)
 		p->filter_list = tp->next;
 		tcf_destroy(tp);
 	}
-	memset(p, 0, sizeof(*p));
-	p->filter_list = NULL;
-
 #if 0
 /* for future use */
 	qdisc_destroy(p->q);