Merging upstream version 4.19.260.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 10 insertions, 36 deletions

diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index c044ff2f7..78830efe8 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -578,46 +578,20 @@ static int rfcomm_sock_sendmsg(struct socket *sock, struct msghdr *msg,
 	lock_sock(sk);
 
 	sent = bt_sock_wait_ready(sk, msg->msg_flags);
-	if (sent)
-		goto done;
-
-	while (len) {
-		size_t size = min_t(size_t, len, d->mtu);
-		int err;
-
-		skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
-				msg->msg_flags & MSG_DONTWAIT, &err);
-		if (!skb) {
-			if (sent == 0)
-				sent = err;
-			break;
-		}
-		skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
-
-		err = memcpy_from_msg(skb_put(skb, size), msg, size);
-		if (err) {
-			kfree_skb(skb);
-			if (sent == 0)
-				sent = err;
-			break;
-		}
 
-		skb->priority = sk->sk_priority;
+	release_sock(sk);
 
-		err = rfcomm_dlc_send(d, skb);
-		if (err < 0) {
-			kfree_skb(skb);
-			if (sent == 0)
-				sent = err;
-			break;
-		}
+	if (sent)
+		return sent;
 
-		sent += size;
-		len  -= size;
-	}
+	skb = bt_skb_sendmmsg(sk, msg, len, d->mtu, RFCOMM_SKB_HEAD_RESERVE,
+			      RFCOMM_SKB_TAIL_RESERVE);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
 
-done:
-	release_sock(sk);
+	sent = rfcomm_dlc_send(d, skb);
+	if (sent < 0)
+		kfree_skb(skb);
 
 	return sent;
 }