staging: ft1000: Fix proc initialization handling.

Cleaning proc entries when error occures was not handled correctly.
So fix and also add proper cleaning.

Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_proc.c b/drivers/staging/ft1000/ft1000-usb/ft1000_proc.c
index 105846d..dbd4a1c 100644 (file)
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_proc.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_proc.c
@@ -193,32 +193,44 @@ static struct notifier_block ft1000_netdev_notifier = {
 };
 
 
-void
-ft1000InitProc (struct net_device *dev)
+int ft1000InitProc(struct net_device *dev)
 {
        struct ft1000_info *info;
   struct proc_dir_entry *ft1000_proc_file;
-       info = netdev_priv(dev);
+       int ret = 0;
 
+       info = netdev_priv(dev);
 
   info->ft1000_proc_dir = proc_mkdir (FT1000_PROC_DIR, FTNET_PROC);
-  if (info->ft1000_proc_dir == NULL)
-    {
-      remove_proc_entry (FT1000_PROC_DIR, FTNET_PROC);
-    }
-
+       if (info->ft1000_proc_dir == NULL) {
+               printk(KERN_WARNING "Unable to create %s dir.\n",
+                       FT1000_PROC_DIR);
+               ret = -EINVAL;
+               goto fail;
+       }
 
   ft1000_proc_file =
     create_proc_read_entry (dev->name, 0644, info->ft1000_proc_dir,
                            ft1000ReadProc, dev);
-  if (ft1000_proc_file == NULL)
-    {
-      remove_proc_entry (info->netdevname, info->ft1000_proc_dir);
-    }
+       if (ft1000_proc_file == NULL) {
+               printk(KERN_WARNING "Unable to create /proc entry.\n");
+               ret = -EINVAL;
+               goto fail_entry;
+       }
 
   snprintf (info->netdevname, IFNAMSIZ, "%s", dev->name);
-  register_netdevice_notifier (&ft1000_netdev_notifier);
-  return;
+       ret = register_netdevice_notifier(&ft1000_netdev_notifier);
+       if (ret)
+               goto fail_notif;
+
+       return 0;
+
+fail_notif:
+       remove_proc_entry(info->netdevname, info->ft1000_proc_dir);
+fail_entry:
+       remove_proc_entry(FT1000_PROC_DIR, FTNET_PROC);
+fail:
+       return ret;
 }
 
 void

diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
index 045ef30..4a91469 100644 (file)
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
@@ -594,7 +594,7 @@ struct usb_interface;
 int reg_ft1000_netdev(struct ft1000_device *ft1000dev, struct usb_interface *intf);
 int ft1000_poll(void* dev_id);
 
-void ft1000InitProc(struct net_device *dev);
+int ft1000InitProc(struct net_device *dev);
 void ft1000CleanupProc(struct ft1000_info *info);