Bluetooth: Add return check for L2CAP security level set

Add return check for security level set for socket interface since
stack will check the return value.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index dcb14abebeba..a7be8b59b3c2 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -791,10 +791,13 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
 
                 conn = chan->conn;
 
-                /*change security for LE channels */
+                /* change security for LE channels */
                 if (chan->scid == L2CAP_CID_ATT) {
-                        if (smp_conn_security(conn->hcon, sec.level))
+                        if (smp_conn_security(conn->hcon, sec.level)) {
+                                err = -EINVAL;
                                 break;
+                        }
+
                         set_bit(FLAG_PENDING_SECURITY, &chan->flags);
                         sk->sk_state = BT_CONFIG;
                         chan->state = BT_CONFIG;