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Commit 322f74a4 authored by Ingo Oeser's avatar Ingo Oeser Committed by David S. Miller
Browse files

[IPV6]: Cleanups for net/ipv6/addrconf.c (kzalloc, early exit) v2 



Here are some possible (and trivial) cleanups.
- use kzalloc() where possible
- invert allocation failure test like
  if (object) {
        /* Rest of function here */
  }
  to

  if (object == NULL)
        return NULL;

  /* Rest of function here */

Signed-off-by: default avatarIngo Oeser <ioe-lkml@rameria.de>
Acked-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0c600eda

net/ipv6/addrconf.c

+69 −72
Original line number Diff line number Diff line
@@ -341,10 +341,10 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev) 
	if (dev->mtu < IPV6_MIN_MTU)

		return NULL;



	ndev = kmalloc(sizeof(struct inet6_dev), GFP_KERNEL);

 	ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL);



	if (ndev) {

		memset(ndev, 0, sizeof(struct inet6_dev));

 	if (ndev == NULL)

 		return NULL;



	rwlock_init(&ndev->lock);

	ndev->dev = dev;
@@ -418,7 +418,6 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev) 
			      NULL);

	addrconf_sysctl_register(ndev, &ndev->cnf);

#endif

	}

	return ndev;

}
@@ -536,7 +535,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen, 
		goto out;

	}



	ifa = kmalloc(sizeof(struct inet6_ifaddr), GFP_ATOMIC);

	ifa = kzalloc(sizeof(struct inet6_ifaddr), GFP_ATOMIC);



	if (ifa == NULL) {

		ADBG(("ipv6_add_addr: malloc failed\n"));
@@ -550,7 +549,6 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen, 
		goto out;

	}



	memset(ifa, 0, sizeof(struct inet6_ifaddr));

	ipv6_addr_copy(&ifa->addr, addr);



	spin_lock_init(&ifa->lock);
@@ -2669,11 +2667,10 @@ static int if6_seq_open(struct inode *inode, struct file *file) 
{

	struct seq_file *seq;

	int rc = -ENOMEM;

	struct if6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);

	struct if6_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL);



	if (!s)

		goto out;

	memset(s, 0, sizeof(*s));



	rc = seq_open(file, &if6_seq_ops);

	if (rc)