ipv4: coding style: comparison for equality with NULL
The ipv4 code uses a mixture of coding styles. In some instances check
for NULL pointer is done as x == NULL and sometimes as !x. !x is
preferred according to checkpatch and this patch makes the code
consistent by adopting the latter form.
No changes detected by objdiff.
Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index eac5aec..8d695b6 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -390,7 +390,7 @@
int err = -ENOBUFS;
skb = nlmsg_new(fib_nlmsg_size(fa->fa_info), GFP_KERNEL);
- if (skb == NULL)
+ if (!skb)
goto errout;
err = fib_dump_info(skb, info->portid, seq, event, tb_id,
@@ -503,7 +503,7 @@
}
#ifdef CONFIG_IP_ROUTE_MULTIPATH
- if (cfg->fc_mp == NULL)
+ if (!cfg->fc_mp)
return 0;
rtnh = cfg->fc_mp;
@@ -646,7 +646,7 @@
rcu_read_lock();
err = -ENODEV;
in_dev = inetdev_by_index(net, nh->nh_oif);
- if (in_dev == NULL)
+ if (!in_dev)
goto out;
err = -ENETDOWN;
if (!(in_dev->dev->flags & IFF_UP))
@@ -803,7 +803,7 @@
}
fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct fib_nh), GFP_KERNEL);
- if (fi == NULL)
+ if (!fi)
goto failure;
fib_info_cnt++;
if (cfg->fc_mx) {
@@ -921,7 +921,7 @@
nh->nh_scope = RT_SCOPE_NOWHERE;
nh->nh_dev = dev_get_by_index(net, fi->fib_nh->nh_oif);
err = -ENODEV;
- if (nh->nh_dev == NULL)
+ if (!nh->nh_dev)
goto failure;
} else {
change_nexthops(fi) {
@@ -995,7 +995,7 @@
struct rtmsg *rtm;
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*rtm), flags);
- if (nlh == NULL)
+ if (!nlh)
return -EMSGSIZE;
rtm = nlmsg_data(nlh);
@@ -1045,12 +1045,12 @@
struct nlattr *mp;
mp = nla_nest_start(skb, RTA_MULTIPATH);
- if (mp == NULL)
+ if (!mp)
goto nla_put_failure;
for_nexthops(fi) {
rtnh = nla_reserve_nohdr(skb, sizeof(*rtnh));
- if (rtnh == NULL)
+ if (!rtnh)
goto nla_put_failure;
rtnh->rtnh_flags = nh->nh_flags & 0xFF;
@@ -1093,7 +1093,7 @@
struct hlist_head *head = &fib_info_laddrhash[hash];
struct fib_info *fi;
- if (fib_info_laddrhash == NULL || local == 0)
+ if (!fib_info_laddrhash || local == 0)
return 0;
hlist_for_each_entry(fi, head, fib_lhash) {
@@ -1182,7 +1182,7 @@
fib_alias_accessed(fa);
- if (fi == NULL) {
+ if (!fi) {
if (next_fi != res->fi)
break;
} else if (!fib_detect_death(fi, order, &last_resort,
@@ -1195,7 +1195,7 @@
order++;
}
- if (order <= 0 || fi == NULL) {
+ if (order <= 0 || !fi) {
tb->tb_default = -1;
goto out;
}
@@ -1251,7 +1251,7 @@
alive++;
continue;
}
- if (nexthop_nh->nh_dev == NULL ||
+ if (!nexthop_nh->nh_dev ||
!(nexthop_nh->nh_dev->flags & IFF_UP))
continue;
if (nexthop_nh->nh_dev != dev ||