Revert "net/ieee802154: reject zero-sized raw_sendmsg()"

[ Upstream commit 7ea0dcd2b91a18944403defc561bd830ab0dd042 ]

This reverts commit ae6d6e494ba8f21fc08d2bbb7bad972a2ad5fe2f.

There is a v2 which does return zero if zero length is given.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20221005014750.3685555-1-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index 72637d5994d83dfeeca5bb858ac5070bf8a0a0e5..a92b11999e5f259291c95fa72547bd1a2f3ef2b3 100644 (file)
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -252,9 +252,6 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
                return -EOPNOTSUPP;
        }
 
-       if (!size)
-               return -EINVAL;
-
        lock_sock(sk);
        if (!sk->sk_bound_dev_if)
                dev = dev_getfirstbyhwtype(sock_net(sk), ARPHRD_IEEE802154);