[PATCH] W1: w1_netlink: New init/fini netlink callbacks.

They are guarded with NETLINK_DISABLE compile time options,
so if CONFIG_NET is disabled, no linking errors occur.
Bug noticed by Adrian Bunk <bunk@stusta.de>.

Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 34 insertions, 10 deletions

diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index 498ad505fa5f..2a538d012194 100644
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -88,17 +88,14 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
 
         dev->groups = 1;
         dev->seq = 1;
-        dev->nls = netlink_kernel_create(NETLINK_W1, 1, NULL, THIS_MODULE);
-        if (!dev->nls) {
-                printk(KERN_ERR "Failed to create new netlink socket(%u) for w1 master %s.\n",
-                        NETLINK_NFLOG, dev->dev.bus_id);
-        }
+        dev_init_netlink(dev);
 
         err = device_register(&dev->dev);
         if (err) {
                 printk(KERN_ERR "Failed to register master device. err=%d\n", err);
-                if (dev->nls && dev->nls->sk_socket)
-                        sock_release(dev->nls->sk_socket);
+
+                dev_fini_netlink(dev);
+
                 memset(dev, 0, sizeof(struct w1_master));
                 kfree(dev);
                 dev = NULL;
@@ -107,11 +104,10 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
         return dev;
 }
 
-static void w1_free_dev(struct w1_master *dev)
+void w1_free_dev(struct w1_master *dev)
 {
         device_unregister(&dev->dev);
-        if (dev->nls && dev->nls->sk_socket)
-                sock_release(dev->nls->sk_socket);
+        dev_fini_netlink(dev);
         memset(dev, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
         kfree(dev);
 }
diff --git a/drivers/w1/w1_netlink.c b/drivers/w1/w1_netlink.c
index e7b774423dd6..328645da7972 100644
--- a/drivers/w1/w1_netlink.c
+++ b/drivers/w1/w1_netlink.c
@@ -57,10 +57,36 @@ void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
 nlmsg_failure:
         return;
 }
+
+int dev_init_netlink(struct w1_master *dev)
+{
+        dev->nls = netlink_kernel_create(NETLINK_W1, 1, NULL, THIS_MODULE);
+        if (!dev->nls) {
+                printk(KERN_ERR "Failed to create new netlink socket(%u) for w1 master %s.\n",
+                        NETLINK_W1, dev->dev.bus_id);
+        }
+
+        return 0;
+}
+
+void dev_fini_netlink(struct w1_master *dev)
+{
+        if (dev->nls && dev->nls->sk_socket)
+                sock_release(dev->nls->sk_socket);
+}
 #else
 #warning Netlink support is disabled. Please compile with NET support enabled.
 
 void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
 {
 }
+
+int dev_init_netlink(struct w1_master *dev)
+{
+        return 0;
+}
+
+void dev_fini_netlink(struct w1_master *dev)
+{
+}
 #endif
diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h
index 8615756946df..eb0c8b3152c8 100644
--- a/drivers/w1/w1_netlink.h
+++ b/drivers/w1/w1_netlink.h
@@ -52,6 +52,8 @@ struct w1_netlink_msg
 #ifdef __KERNEL__
 
 void w1_netlink_send(struct w1_master *, struct w1_netlink_msg *);
+int dev_init_netlink(struct w1_master *dev);
+void dev_fini_netlink(struct w1_master *dev);
 
 #endif /* __KERNEL__ */
 #endif /* __W1_NETLINK_H */