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Bluetooth: Purge the dlc->tx_queue to avoid circular dependency

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In rfcomm_tty_cleanup we purge the dlc->tx_queue which may contain
socket buffers referencing the tty_port and thus preventing the tty_port
destruction.

Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Gianluca Anzolin 2013-07-29 17:08:13 +02:00 committed by Gustavo Padovan
parent ece3150dea
commit ffe6b68cc5
1 changed files with 6 additions and 0 deletions
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6
net/bluetooth/rfcomm/tty.c
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@ -668,6 +668,12 @@ static void rfcomm_tty_cleanup(struct tty_struct *tty)
tty->driver_data = NULL;
rfcomm_dlc_unlock(dev->dlc);
/*
* purge the dlc->tx_queue to avoid circular dependencies
* between dev and dlc
*/
skb_queue_purge(&dev->dlc->tx_queue);
tty_port_put(&dev->port);
}