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, 2 insertions, 2 deletions

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 6447dc49429f..fa3d9c328092 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -791,14 +791,14 @@ static int ipv6_renew_option(void *ohdr,
                 if (ohdr) {
                         memcpy(*p, ohdr, ipv6_optlen((struct ipv6_opt_hdr *)ohdr));
                         *hdr = (struct ipv6_opt_hdr *)*p;
-                        *p += CMSG_ALIGN(ipv6_optlen(*(struct ipv6_opt_hdr **)hdr));
+                        *p += CMSG_ALIGN(ipv6_optlen(*hdr));
                 }
         } else {
                 if (newopt) {
                         if (copy_from_user(*p, newopt, newoptlen))
                                 return -EFAULT;
                         *hdr = (struct ipv6_opt_hdr *)*p;
-                        if (ipv6_optlen(*(struct ipv6_opt_hdr **)hdr) > newoptlen)
+                        if (ipv6_optlen(*hdr) > newoptlen)
                                 return -EINVAL;
                         *p += CMSG_ALIGN(newoptlen);
                 }