1 files changed, 56 insertions, 0 deletions

diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index ef9a60fda495..b19a386332fc 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -197,6 +197,62 @@ done:
         return err;
 }
 
+static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+        DECLARE_WAITQUEUE(wait, current);
+        struct sock *sk = sock->sk, *nsk;
+        long timeo;
+        int err = 0;
+
+        lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
+
+        if (sk->sk_state != BT_LISTEN) {
+                err = -EBADFD;
+                goto done;
+        }
+
+        timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
+
+        BT_DBG("sk %p timeo %ld", sk, timeo);
+
+        /* Wait for an incoming connection. (wake-one). */
+        add_wait_queue_exclusive(sk_sleep(sk), &wait);
+        while (!(nsk = bt_accept_dequeue(sk, newsock))) {
+                set_current_state(TASK_INTERRUPTIBLE);
+                if (!timeo) {
+                        err = -EAGAIN;
+                        break;
+                }
+
+                release_sock(sk);
+                timeo = schedule_timeout(timeo);
+                lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
+
+                if (sk->sk_state != BT_LISTEN) {
+                        err = -EBADFD;
+                        break;
+                }
+
+                if (signal_pending(current)) {
+                        err = sock_intr_errno(timeo);
+                        break;
+                }
+        }
+        set_current_state(TASK_RUNNING);
+        remove_wait_queue(sk_sleep(sk), &wait);
+
+        if (err)
+                goto done;
+
+        newsock->state = SS_CONNECTED;
+
+        BT_DBG("new socket %p", nsk);
+
+done:
+        release_sock(sk);
+        return err;
+}
+
 static int l2cap_sock_release(struct socket *sock)
 {
         struct sock *sk = sock->sk;