[CONNECTOR]: Initialize subsystem earlier.

Attached patch declares connector init function as subsys_init()
and returns -EAGAIN in case connector is not initialized yet.

Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 5 deletions

diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index 35897079a78d..79d581c86520 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -308,6 +308,9 @@ int cn_add_callback(struct cb_id *id, char *name, void (*callback)(void *))
         int err;
         struct cn_dev *dev = &cdev;
 
+        if (!cn_already_initialized)
+                return -EAGAIN;
+
         err = cn_queue_add_callback(dev->cbdev, name, id, callback);
         if (err)
                 return err;
@@ -435,7 +438,7 @@ static void cn_callback(void *data)
         mutex_unlock(&notify_lock);
 }
 
-static int __init cn_init(void)
+static int __devinit cn_init(void)
 {
         struct cn_dev *dev = &cdev;
         int err;
@@ -456,21 +459,22 @@ static int __init cn_init(void)
                         sock_release(dev->nls->sk_socket);
                 return -EINVAL;
         }
+        
+        cn_already_initialized = 1;
 
         err = cn_add_callback(&dev->id, "connector", &cn_callback);
         if (err) {
+                cn_already_initialized = 0;
                 cn_queue_free_dev(dev->cbdev);
                 if (dev->nls->sk_socket)
                         sock_release(dev->nls->sk_socket);
                 return -EINVAL;
         }
 
-        cn_already_initialized = 1;
-
         return 0;
 }
 
-static void __exit cn_fini(void)
+static void __devexit cn_fini(void)
 {
         struct cn_dev *dev = &cdev;
 
@@ -482,7 +486,7 @@ static void __exit cn_fini(void)
                 sock_release(dev->nls->sk_socket);
 }
 
-module_init(cn_init);
+subsys_initcall(cn_init);
 module_exit(cn_fini);
 
 EXPORT_SYMBOL_GPL(cn_add_callback);