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net: sched: fix coding style issues

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This patch fix checkpatch issues for upcomming patches according to the
sched api file. It changes mostly how to check on null pointer.

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Aring 2017-12-20 12:35:11 -05:00 committed by David S. Miller
parent 8f36e00065
commit ac8ef4ab73
6 changed files with 14 additions and 13 deletions
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2
net/sched/sch_api.c
View File

@ -669,7 +669,7 @@ int qdisc_class_hash_init(struct Qdisc_class_hash *clhash)
unsigned int size = 4;
clhash->hash = qdisc_class_hash_alloc(size);
if (clhash->hash == NULL)
if (!clhash->hash)
return -ENOMEM;
clhash->hashsize = size;
clhash->hashmask = size - 1;

12
net/sched/sch_cbq.c
View File

@ -1150,12 +1150,13 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt)
if (err < 0)
return err;
if (tb[TCA_CBQ_RTAB] == NULL || tb[TCA_CBQ_RATE] == NULL)
if (!tb[TCA_CBQ_RTAB] || !tb[TCA_CBQ_RATE])
return -EINVAL;
r = nla_data(tb[TCA_CBQ_RATE]);
if ((q->link.R_tab = qdisc_get_rtab(r, tb[TCA_CBQ_RTAB])) == NULL)
q->link.R_tab = qdisc_get_rtab(r, tb[TCA_CBQ_RTAB]);
if (!q->link.R_tab)
return -EINVAL;
err = tcf_block_get(&q->link.block, &q->link.filter_list, sch);
@ -1460,7 +1461,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
struct cbq_class *parent;
struct qdisc_rate_table *rtab = NULL;
if (opt == NULL)
if (!opt)
return -EINVAL;
err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy, NULL);
@ -1532,8 +1533,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
if (parentid == TC_H_ROOT)
return -EINVAL;
if (tb[TCA_CBQ_WRROPT] == NULL || tb[TCA_CBQ_RATE] == NULL ||
tb[TCA_CBQ_LSSOPT] == NULL)
if (!tb[TCA_CBQ_WRROPT] || !tb[TCA_CBQ_RATE] || !tb[TCA_CBQ_LSSOPT])
return -EINVAL;
rtab = qdisc_get_rtab(nla_data(tb[TCA_CBQ_RATE]), tb[TCA_CBQ_RTAB]);
@ -1565,7 +1565,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
if (parentid) {
parent = cbq_class_lookup(q, parentid);
err = -EINVAL;
if (parent == NULL)
if (!parent)
goto failure;
}

7
net/sched/sch_gred.c
View File

@ -306,12 +306,13 @@ static inline int gred_change_table_def(struct Qdisc *sch, struct nlattr *dps)
struct tc_gred_sopt *sopt;
int i;
if (dps == NULL)
if (!dps)
return -EINVAL;
sopt = nla_data(dps);
if (sopt->DPs > MAX_DPs || sopt->DPs == 0 || sopt->def_DP >= sopt->DPs)
if (sopt->DPs > MAX_DPs || sopt->DPs == 0 ||
sopt->def_DP >= sopt->DPs)
return -EINVAL;
sch_tree_lock(sch);
@ -470,7 +471,7 @@ static int gred_init(struct Qdisc *sch, struct nlattr *opt)
struct nlattr *tb[TCA_GRED_MAX + 1];
int err;
if (opt == NULL)
if (!opt)
return -EINVAL;
err = nla_parse_nested(tb, TCA_GRED_MAX, opt, gred_policy, NULL);

2
net/sched/sch_hfsc.c
View File

@ -1396,7 +1396,7 @@ hfsc_init_qdisc(struct Qdisc *sch, struct nlattr *opt)
qdisc_watchdog_init(&q->watchdog, sch);
if (opt == NULL || nla_len(opt) < sizeof(*qopt))
if (!opt || nla_len(opt) < sizeof(*qopt))
return -EINVAL;
qopt = nla_data(opt);

2
net/sched/sch_multiq.c
View File

@ -243,7 +243,7 @@ static int multiq_init(struct Qdisc *sch, struct nlattr *opt)
q->queues = NULL;
if (opt == NULL)
if (!opt)
return -EINVAL;
err = tcf_block_get(&q->block, &q->filter_list, sch);

2
net/sched/sch_tbf.c
View File

@ -428,7 +428,7 @@ static int tbf_init(struct Qdisc *sch, struct nlattr *opt)
qdisc_watchdog_init(&q->watchdog, sch);
q->qdisc = &noop_qdisc;
if (opt == NULL)
if (!opt)
return -EINVAL;
q->t_c = ktime_get_ns();