Commit fb856e50 authored by Peter Hurley's avatar Peter Hurley Committed by Marcel Holtmann

Bluetooth: Cleanup RFCOMM device registration error handling

If RFCOMM tty device registration fails, cleanup by releasing
the tty_port reference to trigger rfcomm_dev destruction
(rather than open-coding it).

The dlc reference release is moved into rfcomm_dev_add(),
which ensures cleanup in both error paths -- ie., if
__rfcomm_dev_add() fails or if tty_port_register_device() fails.

Fixes releasing the module reference if device registration fails.
Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Tested-By: default avatarAlexander Holler <holler@ahsoftware.de>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent f3550957
......@@ -93,6 +93,7 @@ static void rfcomm_dev_destruct(struct tty_port *port)
rfcomm_dlc_put(dlc);
if (dev->tty_dev)
tty_unregister_device(rfcomm_tty_driver, dev->id);
spin_lock(&rfcomm_dev_lock);
......@@ -317,16 +318,15 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
BT_DBG("id %d channel %d", req->dev_id, req->channel);
dev = __rfcomm_dev_add(req, dlc);
if (IS_ERR(dev))
if (IS_ERR(dev)) {
rfcomm_dlc_put(dlc);
return PTR_ERR(dev);
}
tty = tty_port_register_device(&dev->port, rfcomm_tty_driver,
dev->id, NULL);
if (IS_ERR(tty)) {
spin_lock(&rfcomm_dev_lock);
list_del(&dev->list);
spin_unlock(&rfcomm_dev_lock);
kfree(dev);
tty_port_put(&dev->port);
return PTR_ERR(tty);
}
......@@ -420,10 +420,8 @@ static int __rfcomm_create_dev(struct sock *sk, void __user *arg)
}
id = rfcomm_dev_add(&req, dlc);
if (id < 0) {
rfcomm_dlc_put(dlc);
if (id < 0)
return id;
}
if (req.flags & (1 << RFCOMM_REUSE_DLC)) {
/* DLC is now used by device.
......
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