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Diffstat (limited to 'net/bluetooth/rfcomm/tty.c')
-rw-r--r--net/bluetooth/rfcomm/tty.c55
1 files changed, 31 insertions, 24 deletions
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index eb2b52484c7..9a7a44fc721 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -1,4 +1,4 @@
-/*
+/*
RFCOMM implementation for Linux Bluetooth stack (BlueZ).
Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org>
@@ -11,13 +11,13 @@
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
- CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
- COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
+ ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
+ COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
SOFTWARE IS DISCLAIMED.
*/
@@ -74,6 +74,8 @@ struct rfcomm_dev {
wait_queue_head_t wait;
struct tasklet_struct wakeup_task;
+ struct device *tty_dev;
+
atomic_t wmem_alloc;
};
@@ -110,7 +112,7 @@ static void rfcomm_dev_destruct(struct rfcomm_dev *dev)
kfree(dev);
- /* It's safe to call module_put() here because socket still
+ /* It's safe to call module_put() here because socket still
holds reference to this module. */
module_put(THIS_MODULE);
}
@@ -185,7 +187,7 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
int err = 0;
BT_DBG("id %d channel %d", req->dev_id, req->channel);
-
+
dev = kzalloc(sizeof(struct rfcomm_dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
@@ -234,7 +236,7 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
bacpy(&dev->dst, &req->dst);
dev->channel = req->channel;
- dev->flags = req->flags &
+ dev->flags = req->flags &
((1 << RFCOMM_RELEASE_ONHUP) | (1 << RFCOMM_REUSE_DLC));
init_waitqueue_head(&dev->wait);
@@ -249,7 +251,7 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
dev->dlc = dlc;
rfcomm_dlc_unlock(dlc);
- /* It's safe to call __module_get() here because socket already
+ /* It's safe to call __module_get() here because socket already
holds reference to this module. */
__module_get(THIS_MODULE);
@@ -261,7 +263,7 @@ out:
return err;
}
- tty_register_device(rfcomm_tty_driver, dev->id, rfcomm_get_device(dev));
+ dev->tty_dev = tty_register_device(rfcomm_tty_driver, dev->id, NULL);
return dev->id;
}
@@ -487,7 +489,7 @@ static void rfcomm_dev_data_ready(struct rfcomm_dlc *dlc, struct sk_buff *skb)
{
struct rfcomm_dev *dev = dlc->owner;
struct tty_struct *tty;
-
+
if (!dev || !(tty = dev->tty)) {
kfree_skb(skb);
return;
@@ -506,7 +508,7 @@ static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err)
struct rfcomm_dev *dev = dlc->owner;
if (!dev)
return;
-
+
BT_DBG("dlc %p dev %p err %d", dlc, dev, err);
dev->err = err;
@@ -525,7 +527,7 @@ static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err)
rfcomm_dev_put(dev);
rfcomm_dlc_lock(dlc);
}
- } else
+ } else
tty_hangup(dev->tty);
}
}
@@ -543,7 +545,7 @@ static void rfcomm_dev_modem_status(struct rfcomm_dlc *dlc, u8 v24_sig)
tty_hangup(dev->tty);
}
- dev->modem_status =
+ dev->modem_status =
((v24_sig & RFCOMM_V24_RTC) ? (TIOCM_DSR | TIOCM_DTR) : 0) |
((v24_sig & RFCOMM_V24_RTR) ? (TIOCM_RTS | TIOCM_CTS) : 0) |
((v24_sig & RFCOMM_V24_IC) ? TIOCM_RI : 0) |
@@ -561,7 +563,7 @@ static void rfcomm_tty_wakeup(unsigned long arg)
BT_DBG("dev %p tty %p", dev, tty);
if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) && tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
+ (tty->ldisc.write_wakeup)(tty);
wake_up_interruptible(&tty->write_wait);
#ifdef SERIAL_HAVE_POLL_WAIT
@@ -576,7 +578,7 @@ static int rfcomm_tty_open(struct tty_struct *tty, struct file *filp)
struct rfcomm_dlc *dlc;
int err, id;
- id = tty->index;
+ id = tty->index;
BT_DBG("tty %p id %d", tty, id);
@@ -630,6 +632,9 @@ static int rfcomm_tty_open(struct tty_struct *tty, struct file *filp)
set_current_state(TASK_RUNNING);
remove_wait_queue(&dev->wait, &wait);
+ if (err == 0)
+ device_move(dev->tty_dev, rfcomm_get_device(dev));
+
return err;
}
@@ -642,6 +647,8 @@ static void rfcomm_tty_close(struct tty_struct *tty, struct file *filp)
BT_DBG("tty %p dev %p dlc %p opened %d", tty, dev, dev->dlc, dev->opened);
if (--dev->opened == 0) {
+ device_move(dev->tty_dev, NULL);
+
/* Close DLC and dettach TTY */
rfcomm_dlc_close(dev->dlc, 0);
@@ -670,7 +677,7 @@ static int rfcomm_tty_write(struct tty_struct *tty, const unsigned char *buf, in
size = min_t(uint, count, dlc->mtu);
skb = rfcomm_wmalloc(dev, size + RFCOMM_SKB_RESERVE, GFP_ATOMIC);
-
+
if (!skb)
break;
@@ -773,7 +780,7 @@ static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
return;
/* Handle turning off CRTSCTS */
- if ((old->c_cflag & CRTSCTS) && !(new->c_cflag & CRTSCTS))
+ if ((old->c_cflag & CRTSCTS) && !(new->c_cflag & CRTSCTS))
BT_DBG("Turning off CRTSCTS unsupported");
/* Parity on/off and when on, odd/even */
@@ -830,7 +837,7 @@ static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
}
/* Handle number of data bits [5-8] */
- if ((old->c_cflag & CSIZE) != (new->c_cflag & CSIZE))
+ if ((old->c_cflag & CSIZE) != (new->c_cflag & CSIZE))
changes |= RFCOMM_RPN_PM_DATA;
switch (new->c_cflag & CSIZE) {
@@ -868,7 +875,7 @@ static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
case 9600:
baud = RFCOMM_RPN_BR_9600;
break;
- case 19200:
+ case 19200:
baud = RFCOMM_RPN_BR_19200;
break;
case 38400:
@@ -887,7 +894,7 @@ static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
/* 9600 is standard accordinag to the RFCOMM specification */
baud = RFCOMM_RPN_BR_9600;
break;
-
+
}
if (changes)
@@ -978,11 +985,11 @@ static int rfcomm_tty_read_proc(char *buf, char **start, off_t offset, int len,
static int rfcomm_tty_tiocmget(struct tty_struct *tty, struct file *filp)
{
- struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
+ struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
BT_DBG("tty %p dev %p", tty, dev);
- return dev->modem_status;
+ return dev->modem_status;
}
static int rfcomm_tty_tiocmset(struct tty_struct *tty, struct file *filp, unsigned int set, unsigned int clear)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-02-07 13:54:05 +0000