[AX.25]: Fix unchecked ax25_listen_register uses

[pandora-kernel.git] / net / rose / af_rose.c

diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index c115295..09f8a06 100644 (file)
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -66,6 +66,14 @@ static struct proto_ops rose_proto_ops;
 
 ax25_address rose_callsign;
 
+/*
+ * ROSE network devices are virtual network devices encapsulating ROSE
+ * frames into AX.25 which will be sent through an AX.25 device, so form a
+ * special "super class" of normal net devices; split their locks off into a
+ * separate class since they always nest.
+ */
+static struct lock_class_key rose_netdev_xmit_lock_key;
+
 /*
  *     Convert a ROSE address into text.
  */
@@ -1306,7 +1314,8 @@ static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
                        return -EFAULT;
                if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
-                       ax25_listen_register(&rose_callsign, NULL);
+                       return ax25_listen_register(&rose_callsign, NULL);
+
                return 0;
 
        case SIOCRSGL2CALL:
@@ -1473,6 +1482,11 @@ static struct notifier_block rose_dev_notifier = {
 
 static struct net_device **dev_rose;
 
+static struct ax25_protocol rose_pid = {
+       .pid    = AX25_P_ROSE,
+       .func   = rose_route_frame
+};
+
 static int __init rose_proto_init(void)
 {
        int i;
@@ -1515,13 +1529,14 @@ static int __init rose_proto_init(void)
                        free_netdev(dev);
                        goto fail;
                }
+               lockdep_set_class(&dev->_xmit_lock, &rose_netdev_xmit_lock_key);
                dev_rose[i] = dev;
        }
 
        sock_register(&rose_family_ops);
        register_netdevice_notifier(&rose_dev_notifier);
 
-       ax25_protocol_register(AX25_P_ROSE, rose_route_frame);
+       ax25_register_pid(&rose_pid);
        ax25_linkfail_register(rose_link_failed);
 
 #ifdef CONFIG_SYSCTL