--- a/net/bluetooth/rfcomm/tty.c 2014-01-17 14:27:32.320268044 -0500 +++ b/net/bluetooth/rfcomm/tty.c 2014-01-17 14:33:52.560269348 -0500 @@ -58,6 +58,7 @@ struct rfcomm_dev { uint modem_status; struct rfcomm_dlc *dlc; + wait_queue_head_t conn_wait; struct device *tty_dev; @@ -124,7 +125,41 @@ static int rfcomm_dev_activate(struct tt { struct rfcomm_dev *dev = container_of(port, struct rfcomm_dev, port); - return rfcomm_dlc_open(dev->dlc, &dev->src, &dev->dst, dev->channel); + DEFINE_WAIT(wait); + int err; + + err = rfcomm_dlc_open(dev->dlc, &dev->src, &dev->dst, dev->channel); + if (err) + return err; + + while (1) { + prepare_to_wait(&dev->conn_wait, &wait, TASK_INTERRUPTIBLE); + + if (dev->dlc->state == BT_CLOSED) { + err = -dev->err; + break; + } + + if (dev->dlc->state == BT_CONNECTED) + break; + + if (signal_pending(current)) { + err = -ERESTARTSYS; + break; + } + + tty_unlock(tty); + schedule(); + tty_lock(tty); + } + + finish_wait(&dev->conn_wait, &wait); + + if (!err) + device_move(dev->tty_dev, rfcomm_get_device(dev), + DPM_ORDER_DEV_AFTER_PARENT); + + return err; } /* we block the open until the dlc->state becomes BT_CONNECTED */ @@ -151,7 +186,6 @@ static const struct tty_port_operations .destruct = rfcomm_dev_destruct, .activate = rfcomm_dev_activate, .shutdown = rfcomm_dev_shutdown, - .carrier_raised = rfcomm_dev_carrier_raised, }; static struct rfcomm_dev *__rfcomm_dev_get(int id) @@ -258,6 +292,7 @@ static int rfcomm_dev_add(struct rfcomm_ tty_port_init(&dev->port); dev->port.ops = &rfcomm_port_ops; + init_waitqueue_head(&dev->conn_wait); skb_queue_head_init(&dev->pending); @@ -576,12 +611,9 @@ static void rfcomm_dev_state_change(stru BT_DBG("dlc %p dev %p err %d", dlc, dev, err); dev->err = err; - if (dlc->state == BT_CONNECTED) { - device_move(dev->tty_dev, rfcomm_get_device(dev), - DPM_ORDER_DEV_AFTER_PARENT); - - wake_up_interruptible(&dev->port.open_wait); - } else if (dlc->state == BT_CLOSED) + wake_up_interruptible(&dev->conn_wait); + + if (dlc->state == BT_CLOSED) tty_port_tty_hangup(&dev->port, false); } @@ -1104,7 +1136,7 @@ int __init rfcomm_init_ttys(void) rfcomm_tty_driver->subtype = SERIAL_TYPE_NORMAL; rfcomm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; rfcomm_tty_driver->init_termios = tty_std_termios; - rfcomm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; + rfcomm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; rfcomm_tty_driver->init_termios.c_lflag &= ~ICANON; tty_set_operations(rfcomm_tty_driver, &rfcomm_ops);