[PATCH 15/51] sctp: pass a kernel pointer to sctp_setsockopt_nodelay

[Christoph Hellwig]

Use the kernel pointer that sctp_setsockopt has available instead of
directly handling the user pointer.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 net/sctp/socket.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ff3b720eab0aa2..f9fe93e865b970 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3020,17 +3020,12 @@ static int sctp_setsockopt_primary_addr(struct sock 
*sk, struct sctp_prim *prim,
  * introduced, at the cost of more packets in the network.  Expects an
  *  integer boolean flag.
  */
-static int sctp_setsockopt_nodelay(struct sock *sk, char __user *optval,
+static int sctp_setsockopt_nodelay(struct sock *sk, int *val,
                                   unsigned int optlen)
 {
-       int val;
-
        if (optlen < sizeof(int))
                return -EINVAL;
-       if (get_user(val, (int __user *)optval))
-               return -EFAULT;
-
-       sctp_sk(sk)->nodelay = (val == 0) ? 0 : 1;
+       sctp_sk(sk)->nodelay = (*val == 0) ? 0 : 1;
        return 0;
 }
 
@@ -4694,7 +4689,7 @@ static int sctp_setsockopt(struct sock *sk, int level, 
int optname,
                retval = sctp_setsockopt_peer_primary_addr(sk, kopt, optlen);
                break;
        case SCTP_NODELAY:
-               retval = sctp_setsockopt_nodelay(sk, optval, optlen);
+               retval = sctp_setsockopt_nodelay(sk, kopt, optlen);
                break;
        case SCTP_RTOINFO:
                retval = sctp_setsockopt_rtoinfo(sk, optval, optlen);
-- 
2.27.0