net: rework recvmsg handler msg_name and msg_namelen logic

[linux-drm-fsl-dcu.git] / net / ax25 / af_ax25.c

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index a00123ebb0ae0705c8e45e8433a07e96a2a06fe5..7bb1605bdfd999d134507b2a925b747bd1e5a07b 100644 (file)
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1636,11 +1636,11 @@ 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,