From: Alexander Aring <aahringo@redhat.com>
Date: Wed, 5 Oct 2022 01:47:49 +0000 (-0400)
Subject: Revert "net/ieee802154: reject zero-sized raw_sendmsg()"
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2eb2756f6c9e9621e022d78321ce40a62c4520b5;p=linux.git

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

This reverts commit 3a4d061c699bd3eedc80dc97a4b2a2e1af83c6f5.

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>
---

diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index cbd0e2ac4ffe9..7889e1ef7fad6 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -251,9 +251,6 @@ 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);