[patch] Patch for inclusion 3/4

2452_connection-wait-on-RFCOMM-open.patch (text/plain), 2.76 KB, created by Mike Pagano on 2014-01-17 20:32:22 UTC

--- 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);