diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index eef0e3f2f25b..e5c8a295e640 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -298,7 +298,7 @@ static int nr_setsockopt(struct socket *sock, int level, int optname,
 {
 	struct sock *sk = sock->sk;
 	struct nr_sock *nr = nr_sk(sk);
-	unsigned long opt;
+	unsigned int opt;
 
 	if (level != SOL_NETROM)
 		return -ENOPROTOOPT;
@@ -306,18 +306,18 @@ static int nr_setsockopt(struct socket *sock, int level, int optname,
 	if (optlen < sizeof(unsigned int))
 		return -EINVAL;
 
-	if (copy_from_sockptr(&opt, optval, sizeof(unsigned long)))
+	if (copy_from_sockptr(&opt, optval, sizeof(opt)))
 		return -EFAULT;
 
 	switch (optname) {
 	case NETROM_T1:
-		if (opt < 1 || opt > ULONG_MAX / HZ)
+		if (opt < 1 || opt > UINT_MAX / HZ)
 			return -EINVAL;
 		nr->t1 = opt * HZ;
 		return 0;
 
 	case NETROM_T2:
-		if (opt < 1 || opt > ULONG_MAX / HZ)
+		if (opt < 1 || opt > UINT_MAX / HZ)
 			return -EINVAL;
 		nr->t2 = opt * HZ;
 		return 0;
@@ -329,13 +329,13 @@ static int nr_setsockopt(struct socket *sock, int level, int optname,
 		return 0;
 
 	case NETROM_T4:
-		if (opt < 1 || opt > ULONG_MAX / HZ)
+		if (opt < 1 || opt > UINT_MAX / HZ)
 			return -EINVAL;
 		nr->t4 = opt * HZ;
 		return 0;
 
 	case NETROM_IDLE:
-		if (opt > ULONG_MAX / (60 * HZ))
+		if (opt > UINT_MAX / (60 * HZ))
 			return -EINVAL;
 		nr->idle = opt * 60 * HZ;
 		return 0;