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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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23
net/ipv4/ip_output.c
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@@ -182,7 +182,7 @@ static inline int ip_finish_output2(struct sk_buff *skb)
struct sk_buff *skb2;
skb2 = skb_realloc_headroom(skb, LL_RESERVED_SPACE(dev));
if (skb2 == NULL) {
if (!skb2) {
kfree_skb(skb);
return -ENOMEM;
}
@@ -381,7 +381,7 @@ int ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl)
/* Make sure we can route this packet. */
rt = (struct rtable *)__sk_dst_check(sk, 0);
if (rt == NULL) {
if (!rt) {
__be32 daddr;
/* Use correct destination address if we have options. */
@@ -790,12 +790,13 @@ static inline int ip_ufo_append_data(struct sock *sk,
* device, so create one single skb packet containing complete
* udp datagram
*/
if ((skb = skb_peek_tail(queue)) == NULL) {
skb = skb_peek_tail(queue);
if (!skb) {
skb = sock_alloc_send_skb(sk,
hh_len + fragheaderlen + transhdrlen + 20,
(flags & MSG_DONTWAIT), &err);
if (skb == NULL)
if (!skb)
return err;
/* reserve space for Hardware header */
@@ -961,10 +962,10 @@ alloc_new_skb:
skb = sock_wmalloc(sk,
alloclen + hh_len + 15, 1,
sk->sk_allocation);
if (unlikely(skb == NULL))
if (unlikely(!skb))
err = -ENOBUFS;
}
if (skb == NULL)
if (!skb)
goto error;
/*
@@ -1088,10 +1089,10 @@ static int ip_setup_cork(struct sock *sk, struct inet_cork *cork,
*/
opt = ipc->opt;
if (opt) {
if (cork->opt == NULL) {
if (!cork->opt) {
cork->opt = kmalloc(sizeof(struct ip_options) + 40,
sk->sk_allocation);
if (unlikely(cork->opt == NULL))
if (unlikely(!cork->opt))
return -ENOBUFS;
}
memcpy(cork->opt, &opt->opt, sizeof(struct ip_options) + opt->opt.optlen);
@@ -1198,7 +1199,8 @@ ssize_t ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
return -EMSGSIZE;
}
if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL)
skb = skb_peek_tail(&sk->sk_write_queue);
if (!skb)
return -EINVAL;
cork->length += size;
@@ -1329,7 +1331,8 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
__be16 df = 0;
__u8 ttl;
if ((skb = __skb_dequeue(queue)) == NULL)
skb = __skb_dequeue(queue);
if (!skb)
goto out;
tail_skb = &(skb_shinfo(skb)->frag_list);