TTY: rfcomm/tty, add tty_port
Jiri Slaby [Mon, 2 Apr 2012 11:54:50 +0000 (13:54 +0200)]
And use tty from there.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

net/bluetooth/rfcomm/tty.c

index 4bf54b3..97c2a08 100644 (file)
@@ -48,6 +48,7 @@
 static struct tty_driver *rfcomm_tty_driver;
 
 struct rfcomm_dev {
+       struct tty_port         port;
        struct list_head        list;
        atomic_t                refcnt;
 
@@ -64,7 +65,6 @@ struct rfcomm_dev {
        uint                    modem_status;
 
        struct rfcomm_dlc       *dlc;
-       struct tty_struct       *tty;
        wait_queue_head_t       wait;
        struct work_struct      wakeup_task;
 
@@ -252,6 +252,7 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
 
        atomic_set(&dev->opened, 0);
 
+       tty_port_init(&dev->port);
        init_waitqueue_head(&dev->wait);
        INIT_WORK(&dev->wakeup_task, rfcomm_tty_wakeup);
 
@@ -440,8 +441,8 @@ static int rfcomm_release_dev(void __user *arg)
                rfcomm_dlc_close(dev->dlc, 0);
 
        /* Shut down TTY synchronously before freeing rfcomm_dev */
-       if (dev->tty)
-               tty_vhangup(dev->tty);
+       if (dev->port.tty)
+               tty_vhangup(dev->port.tty);
 
        if (!test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags))
                rfcomm_dev_del(dev);
@@ -559,7 +560,7 @@ static void rfcomm_dev_data_ready(struct rfcomm_dlc *dlc, struct sk_buff *skb)
                return;
        }
 
-       tty = dev->tty;
+       tty = dev->port.tty;
        if (!tty || !skb_queue_empty(&dev->pending)) {
                skb_queue_tail(&dev->pending, skb);
                return;
@@ -585,7 +586,7 @@ static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err)
        wake_up_interruptible(&dev->wait);
 
        if (dlc->state == BT_CLOSED) {
-               if (!dev->tty) {
+               if (!dev->port.tty) {
                        if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags)) {
                                /* Drop DLC lock here to avoid deadlock
                                 * 1. rfcomm_dev_get will take rfcomm_dev_lock
@@ -605,7 +606,7 @@ static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err)
                                rfcomm_dlc_lock(dlc);
                        }
                } else
-                       tty_hangup(dev->tty);
+                       tty_hangup(dev->port.tty);
        }
 }
 
@@ -618,8 +619,8 @@ static void rfcomm_dev_modem_status(struct rfcomm_dlc *dlc, u8 v24_sig)
        BT_DBG("dlc %p dev %p v24_sig 0x%02x", dlc, dev, v24_sig);
 
        if ((dev->modem_status & TIOCM_CD) && !(v24_sig & RFCOMM_V24_DV)) {
-               if (dev->tty && !C_CLOCAL(dev->tty))
-                       tty_hangup(dev->tty);
+               if (dev->port.tty && !C_CLOCAL(dev->port.tty))
+                       tty_hangup(dev->port.tty);
        }
 
        dev->modem_status =
@@ -634,7 +635,7 @@ static void rfcomm_tty_wakeup(struct work_struct *work)
 {
        struct rfcomm_dev *dev = container_of(work, struct rfcomm_dev,
                                                                wakeup_task);
-       struct tty_struct *tty = dev->tty;
+       struct tty_struct *tty = dev->port.tty;
        if (!tty)
                return;
 
@@ -644,7 +645,7 @@ static void rfcomm_tty_wakeup(struct work_struct *work)
 
 static void rfcomm_tty_copy_pending(struct rfcomm_dev *dev)
 {
-       struct tty_struct *tty = dev->tty;
+       struct tty_struct *tty = dev->port.tty;
        struct sk_buff *skb;
        int inserted = 0;
 
@@ -697,7 +698,7 @@ static int rfcomm_tty_open(struct tty_struct *tty, struct file *filp)
 
        rfcomm_dlc_lock(dlc);
        tty->driver_data = dev;
-       dev->tty = tty;
+       dev->port.tty = tty;
        rfcomm_dlc_unlock(dlc);
        set_bit(RFCOMM_TTY_ATTACHED, &dev->flags);
 
@@ -762,7 +763,7 @@ static void rfcomm_tty_close(struct tty_struct *tty, struct file *filp)
 
                rfcomm_dlc_lock(dev->dlc);
                tty->driver_data = NULL;
-               dev->tty = NULL;
+               dev->port.tty = NULL;
                rfcomm_dlc_unlock(dev->dlc);
 
                if (test_bit(RFCOMM_TTY_RELEASED, &dev->flags)) {