diff options
Diffstat (limited to 'net/bluetooth/l2cap_sock.c')
-rw-r--r-- | net/bluetooth/l2cap_sock.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index f0b052a..586b3d5 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1059,11 +1059,15 @@ static int __l2cap_wait_ack(struct sock *sk, struct l2cap_chan *chan) DECLARE_WAITQUEUE(wait, current); int err = 0; int timeo = L2CAP_WAIT_ACK_POLL_PERIOD; + /* Timeout to prevent infinite loop */ + unsigned long timeout = jiffies + L2CAP_WAIT_ACK_TIMEOUT; add_wait_queue(sk_sleep(sk), &wait); set_current_state(TASK_INTERRUPTIBLE); do { - BT_DBG("Waiting for %d ACKs", chan->unacked_frames); + BT_DBG("Waiting for %d ACKs, timeout %04d ms", + chan->unacked_frames, time_after(jiffies, timeout) ? 0 : + jiffies_to_msecs(timeout - jiffies)); if (!timeo) timeo = L2CAP_WAIT_ACK_POLL_PERIOD; @@ -1082,6 +1086,11 @@ static int __l2cap_wait_ack(struct sock *sk, struct l2cap_chan *chan) if (err) break; + if (time_after(jiffies, timeout)) { + err = -ENOLINK; + break; + } + } while (chan->unacked_frames > 0 && chan->state == BT_CONNECTED); |