Merge to kernel-2.6.20-1.2949.fc6.vs2.2.0.1

[linux-2.6.git] / net / bluetooth / rfcomm / tty.c

diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index 5d65ceb..eb2b524 100644 (file)
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -38,6 +38,7 @@
 #include <linux/skbuff.h>
 
 #include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
 #include <net/bluetooth/rfcomm.h>
 
 #ifndef CONFIG_BT_RFCOMM_DEBUG
@@ -161,6 +162,22 @@ static inline struct rfcomm_dev *rfcomm_dev_get(int id)
        return dev;
 }
 
+static struct device *rfcomm_get_device(struct rfcomm_dev *dev)
+{
+       struct hci_dev *hdev;
+       struct hci_conn *conn;
+
+       hdev = hci_get_route(&dev->dst, &dev->src);
+       if (!hdev)
+               return NULL;
+
+       conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &dev->dst);
+
+       hci_dev_put(hdev);
+
+       return conn ? &conn->dev : NULL;
+}
+
 static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
 {
        struct rfcomm_dev *dev;
@@ -244,7 +261,7 @@ out:
                return err;
        }
 
-       tty_register_device(rfcomm_tty_driver, dev->id, NULL);
+       tty_register_device(rfcomm_tty_driver, dev->id, rfcomm_get_device(dev));
 
        return dev->id;
 }
@@ -680,9 +697,13 @@ static int rfcomm_tty_write_room(struct tty_struct *tty)
 
        BT_DBG("tty %p", tty);
 
+       if (!dev || !dev->dlc)
+               return 0;
+
        room = rfcomm_room(dev->dlc) - atomic_read(&dev->wmem_alloc);
        if (room < 0)
                room = 0;
+
        return room;
 }
 
@@ -735,9 +756,9 @@ static int rfcomm_tty_ioctl(struct tty_struct *tty, struct file *filp, unsigned
        return -ENOIOCTLCMD;
 }
 
-static void rfcomm_tty_set_termios(struct tty_struct *tty, struct termios *old)
+static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
 {
-       struct termios *new = (struct termios *) tty->termios;
+       struct ktermios *new = tty->termios;
        int old_baud_rate = tty_termios_baud_rate(old);
        int new_baud_rate = tty_termios_baud_rate(new);
 
@@ -748,7 +769,7 @@ static void rfcomm_tty_set_termios(struct tty_struct *tty, struct termios *old)
 
        BT_DBG("tty %p termios %p", tty, old);
 
-       if (!dev)
+       if (!dev || !dev->dlc || !dev->dlc->session)
                return;
 
        /* Handle turning off CRTSCTS */
@@ -898,12 +919,14 @@ static void rfcomm_tty_unthrottle(struct tty_struct *tty)
 static int rfcomm_tty_chars_in_buffer(struct tty_struct *tty)
 {
        struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
-       struct rfcomm_dlc *dlc = dev->dlc;
 
        BT_DBG("tty %p dev %p", tty, dev);
 
-       if (!skb_queue_empty(&dlc->tx_queue))
-               return dlc->mtu;
+       if (!dev || !dev->dlc)
+               return 0;
+
+       if (!skb_queue_empty(&dev->dlc->tx_queue))
+               return dev->dlc->mtu;
 
        return 0;
 }
@@ -911,11 +934,12 @@ static int rfcomm_tty_chars_in_buffer(struct tty_struct *tty)
 static void rfcomm_tty_flush_buffer(struct tty_struct *tty)
 {
        struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
-       if (!dev)
-               return;
 
        BT_DBG("tty %p dev %p", tty, dev);
 
+       if (!dev || !dev->dlc)
+               return;
+
        skb_queue_purge(&dev->dlc->tx_queue);
 
        if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) && tty->ldisc.write_wakeup)
@@ -935,11 +959,12 @@ static void rfcomm_tty_wait_until_sent(struct tty_struct *tty, int timeout)
 static void rfcomm_tty_hangup(struct tty_struct *tty)
 {
        struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
-       if (!dev)
-               return;
 
        BT_DBG("tty %p dev %p", tty, dev);
 
+       if (!dev)
+               return;
+
        rfcomm_tty_flush_buffer(tty);
 
        if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags))
@@ -995,7 +1020,7 @@ static int rfcomm_tty_tiocmset(struct tty_struct *tty, struct file *filp, unsign
 
 /* ---- TTY structure ---- */
 
-static struct tty_operations rfcomm_ops = {
+static const struct tty_operations rfcomm_ops = {
        .open                   = rfcomm_tty_open,
        .close                  = rfcomm_tty_close,
        .write                  = rfcomm_tty_write,