net: rework recvmsg handler msg_name and msg_namelen logic

[pandora-kernel.git] / net / ax25 / af_ax25.c

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index e7c69f4..7b8db0e 100644 (file)
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1635,12 +1635,13 @@ static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
 
        skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
 
-       if (msg->msg_namelen != 0) {
-               struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
+       if (msg->msg_name) {
                ax25_digi digi;
                ax25_address src;
                const unsigned char *mac = skb_mac_header(skb);
+               struct sockaddr_ax25 *sax = msg->msg_name;
 
+               memset(sax, 0, sizeof(struct full_sockaddr_ax25));
                ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
                                &digi, NULL, NULL);
                sax->sax25_family = AF_AX25;
@@ -2006,16 +2007,17 @@ static void __exit ax25_exit(void)
        proc_net_remove(&init_net, "ax25_route");
        proc_net_remove(&init_net, "ax25");
        proc_net_remove(&init_net, "ax25_calls");
-       ax25_rt_free();
-       ax25_uid_free();
-       ax25_dev_free();
 
-       ax25_unregister_sysctl();
        unregister_netdevice_notifier(&ax25_dev_notifier);
+       ax25_unregister_sysctl();
 
        dev_remove_pack(&ax25_packet_type);
 
        sock_unregister(PF_AX25);
        proto_unregister(&ax25_proto);
+
+       ax25_rt_free();
+       ax25_uid_free();
+       ax25_dev_free();
 }
 module_exit(ax25_exit);