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ipv4: coding style: comparison for equality with NULL

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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>
This commit is contained in:
Ian Morris
2015-04-03 09:17:26 +01:00
committed by David S. Miller
parent 11a9c7821c
commit 51456b2914
39 changed files with 210 additions and 202 deletions
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12
net/ipv4/igmp.c
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@@ -692,7 +692,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
hlen = LL_RESERVED_SPACE(dev);
tlen = dev->needed_tailroom;
skb = alloc_skb(IGMP_SIZE + hlen + tlen, GFP_ATOMIC);
if (skb == NULL) {
if (!skb) {
ip_rt_put(rt);
return -1;
}
@@ -981,7 +981,7 @@ int igmp_rcv(struct sk_buff *skb)
int len = skb->len;
bool dropped = true;
if (in_dev == NULL)
if (!in_dev)
goto drop;
if (!pskb_may_pull(skb, sizeof(struct igmphdr)))
@@ -1888,7 +1888,7 @@ int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr)
if (count >= sysctl_igmp_max_memberships)
goto done;
iml = sock_kmalloc(sk, sizeof(*iml), GFP_KERNEL);
if (iml == NULL)
if (!iml)
goto done;
memcpy(&iml->multi, imr, sizeof(*imr));
@@ -1909,7 +1909,7 @@ static int ip_mc_leave_src(struct sock *sk, struct ip_mc_socklist *iml,
struct ip_sf_socklist *psf = rtnl_dereference(iml->sflist);
int err;
if (psf == NULL) {
if (!psf) {
/* any-source empty exclude case */
return ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr,
iml->sfmode, 0, NULL, 0);
@@ -2360,7 +2360,7 @@ void ip_mc_drop_socket(struct sock *sk)
struct ip_mc_socklist *iml;
struct net *net = sock_net(sk);
if (inet->mc_list == NULL)
if (!inet->mc_list)
return;
rtnl_lock();
@@ -2587,7 +2587,7 @@ static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq)
for_each_netdev_rcu(net, state->dev) {
struct in_device *idev;
idev = __in_dev_get_rcu(state->dev);
if (unlikely(idev == NULL))
if (unlikely(!idev))
continue;
im = rcu_dereference(idev->mc_list);
if (likely(im != NULL)) {