net: Make setsockopt() optlen be unsigned.

This provides safety against negative optlen at the type
level instead of depending upon (sometimes non-trivial)
checks against this sprinkled all over the the place, in
each and every implementation.

Based upon work done by Arjan van de Ven and feedback
from Linus Torvalds.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index b8252d289cd..5f32d217535 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -742,7 +742,7 @@ static int pep_init(struct sock *sk)
 }
 
 static int pep_setsockopt(struct sock *sk, int level, int optname,
-				char __user *optval, int optlen)
+				char __user *optval, unsigned int optlen)
 {
 	struct pep_sock *pn = pep_sk(sk);
 	int val = 0, err = 0;