[AX.25]: Fix unchecked ax25_listen_register uses

Fix ax25_listen_register to return something that's a sane error code,
then all callers to use it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/net/ax25/ax25_iface.c b/net/ax25/ax25_iface.c
index dd9b7fee3df8..51e293420b7f 100644
--- a/net/ax25/ax25_iface.c
+++ b/net/ax25/ax25_iface.c
@@ -154,7 +154,7 @@ int ax25_listen_register(ax25_address *callsign, struct net_device *dev)
                 return 0;
 
         if ((listen = kmalloc(sizeof(*listen), GFP_ATOMIC)) == NULL)
-                return 0;
+                return -ENOMEM;
 
         listen->callsign = *callsign;
         listen->dev      = dev;
@@ -164,7 +164,7 @@ int ax25_listen_register(ax25_address *callsign, struct net_device *dev)
         listen_list  = listen;
         spin_unlock_bh(&listen_lock);
 
-        return 1;
+        return 0;
 }
 
 EXPORT_SYMBOL(ax25_listen_register);
@@ -225,7 +225,8 @@ int ax25_listen_mine(ax25_address *callsign, struct net_device *dev)
 
         spin_lock_bh(&listen_lock);
         for (listen = listen_list; listen != NULL; listen = listen->next)
-                if (ax25cmp(&listen->callsign, callsign) == 0 && (listen->dev == dev || listen->dev == NULL)) {
+                if (ax25cmp(&listen->callsign, callsign) == 0 &&
+                    (listen->dev == dev || listen->dev == NULL)) {
                         spin_unlock_bh(&listen_lock);
                         return 1;
         }