AcoSail/kernel_optimize_test
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[Bluetooth] Make use of device_move() for RFCOMM TTY devices

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In the case of bound RFCOMM TTY devices the parent is not available
before its usage. So when opening a RFCOMM TTY device, move it to
the corresponding ACL device as a child. When closing the device,
move it back to the virtual device tree.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Marcel Holtmann 2007-02-17 23:58:57 +01:00 committed by David S. Miller
parent f5ffd4620a
commit c1a3313698
1 changed files with 8 additions and 1 deletions
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9
net/bluetooth/rfcomm/tty.c
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@ -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;
};
@ -261,7 +263,7 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
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;
}
@ -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);