tree 61e28507789927d1797f2231635ab068dc541b0d
parent 41f77cc516d3f86a32c1fa46a8358ef8aefae5da
author Samuel Holland <samuel@sholland.org> 1596299396 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1603961705 +0100

Bluetooth: hci_uart: Cancel init work before unregistering

[ Upstream commit 3b799254cf6f481460719023d7a18f46651e5e7f ]

If hci_uart_tty_close() or hci_uart_unregister_device() is called while
hu->init_ready is scheduled, hci_register_dev() could be called after
the hci_uart is torn down. Avoid this by ensuring the work is complete
or canceled before checking the HCI_UART_REGISTERED flag.

Fixes: 9f2aee848fe6 ("Bluetooth: Add delayed init sequence support for UART controllers")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>