[NEIGH]: Cleanup the neigh_sysctl_register

This mainly removes the err variable, as this call always
return the same error code (-ENOBUFS).

Besides, I moved the call to kmalloc() from the *t declaration
into the code (this is confusing when a variable is initialized
with the result of some call) and removed unneeded comment near
the error path.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index a8b72c1..5dbe26f 100644 (file)
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2652,14 +2652,14 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
                          int p_id, int pdev_id, char *p_name,
                          proc_handler *handler, ctl_handler *strategy)
 {
-       struct neigh_sysctl_table *t = kmemdup(&neigh_sysctl_template,
-                                              sizeof(*t), GFP_KERNEL);
+       struct neigh_sysctl_table *t;
        const char *dev_name_source = NULL;
        char *dev_name = NULL;
-       int err = 0;
 
+       t = kmemdup(&neigh_sysctl_template, sizeof(*t), GFP_KERNEL);
        if (!t)
-               return -ENOBUFS;
+               goto err;
+
        t->neigh_vars[0].data  = &p->mcast_probes;
        t->neigh_vars[1].data  = &p->ucast_probes;
        t->neigh_vars[2].data  = &p->app_probes;
@@ -2717,10 +2717,8 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
        }
 
        dev_name = kstrdup(dev_name_source, GFP_KERNEL);
-       if (!dev_name) {
-               err = -ENOBUFS;
+       if (!dev_name)
                goto free;
-       }
 
        t->neigh_dev[0].procname = dev_name;
 
@@ -2735,20 +2733,18 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
        t->neigh_root_dir[0].child     = t->neigh_proto_dir;
 
        t->sysctl_header = register_sysctl_table(t->neigh_root_dir);
-       if (!t->sysctl_header) {
-               err = -ENOBUFS;
+       if (!t->sysctl_header)
                goto free_procname;
-       }
+
        p->sysctl_table = t;
        return 0;
 
-       /* error path */
- free_procname:
+free_procname:
        kfree(dev_name);
- free:
+free:
        kfree(t);
-
-       return err;
+err:
+       return -ENOBUFS;
 }
 
 void neigh_sysctl_unregister(struct neigh_parms *p)