net: Remove casts to same type

Adding casts of objects to the same type is unnecessary
and confusing for a human reader.

For example, this cast:

	int y;
	int *p = (int *)&y;

I used the coccinelle script below to find and remove these
unnecessary casts.  I manually removed the conversions this
script produces of casts with __force and __user.

@@
type T;
T *p;
@@

-	(T *)p
+	p

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 8ef6b9416cba..286366ef8930 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -1522,8 +1522,8 @@ static int pppol2tp_session_getsockopt(struct sock *sk,
  * handler, according to whether the PPPoX socket is a for a regular session
  * or the special tunnel type.
  */
-static int pppol2tp_getsockopt(struct socket *sock, int level,
-                               int optname, char __user *optval, int __user *optlen)
+static int pppol2tp_getsockopt(struct socket *sock, int level, int optname,
+                               char __user *optval, int __user *optlen)
 {
         struct sock *sk = sock->sk;
         struct l2tp_session *session;
@@ -1535,7 +1535,7 @@ static int pppol2tp_getsockopt(struct socket *sock, int level,
         if (level != SOL_PPPOL2TP)
                 return udp_prot.getsockopt(sk, level, optname, optval, optlen);
 
-        if (get_user(len, (int __user *) optlen))
+        if (get_user(len, optlen))
                 return -EFAULT;
 
         len = min_t(unsigned int, len, sizeof(int));
@@ -1568,7 +1568,7 @@ static int pppol2tp_getsockopt(struct socket *sock, int level,
                 err = pppol2tp_session_getsockopt(sk, session, optname, &val);
 
         err = -EFAULT;
-        if (put_user(len, (int __user *) optlen))
+        if (put_user(len, optlen))
                 goto end_put_sess;
 
         if (copy_to_user((void __user *) optval, &val, len))