net/af_iucv: use DECLARE_SOCKADDR to cast from sockaddr

This gets us compile-time size checking.
Signed-off-by: NJulian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/iucv/af_iucv.c

@@ -587,7 +587,7 @@ static void __iucv_auto_name(struct iucv_sock *iucv)
 static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
 			  int addr_len)
 {
-	struct sockaddr_iucv *sa = (struct sockaddr_iucv *) addr;
+	DECLARE_SOCKADDR(struct sockaddr_iucv *, sa, addr);
 	char uid[sizeof(sa->siucv_user_id)];
 	struct sock *sk = sock->sk;
 	struct iucv_sock *iucv;
@@ -691,7 +691,7 @@ static int iucv_sock_autobind(struct sock *sk)
 
 static int afiucv_path_connect(struct socket *sock, struct sockaddr *addr)
 {
-	struct sockaddr_iucv *sa = (struct sockaddr_iucv *) addr;
+	DECLARE_SOCKADDR(struct sockaddr_iucv *, sa, addr);
 	struct sock *sk = sock->sk;
 	struct iucv_sock *iucv = iucv_sk(sk);
 	unsigned char user_data[16];
@@ -738,7 +738,7 @@ static int afiucv_path_connect(struct socket *sock, struct sockaddr *addr)
 static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
 			     int alen, int flags)
 {
-	struct sockaddr_iucv *sa = (struct sockaddr_iucv *) addr;
+	DECLARE_SOCKADDR(struct sockaddr_iucv *, sa, addr);
 	struct sock *sk = sock->sk;
 	struct iucv_sock *iucv = iucv_sk(sk);
 	int err;
@@ -874,7 +874,7 @@ static int iucv_sock_accept(struct socket *sock, struct socket *newsock,
 static int iucv_sock_getname(struct socket *sock, struct sockaddr *addr,
 			     int peer)
 {
-	struct sockaddr_iucv *siucv = (struct sockaddr_iucv *) addr;
+	DECLARE_SOCKADDR(struct sockaddr_iucv *, siucv, addr);
 	struct sock *sk = sock->sk;
 	struct iucv_sock *iucv = iucv_sk(sk);