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/ip_output.c b/net/ipv4/ip_output.c
index 8259e77..561d67b 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -182,7 +182,7 @@
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 @@
/* 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 @@
* 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 @@
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 @@
*/
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 @@
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 @@
__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);