From: Balakrishna Godavarthi bgodavar@codeaurora.org
[ Upstream commit 7cf7846d27bfc9731e449857db3eec5e0e9701ba ]
Clearing HCI_UART_PROTO_READY will avoid usage of proto function pointers before running the proto close function pointer. There is chance of kernel crash, due to usage of non proto close function pointers after proto close.
Signed-off-by: Balakrishna Godavarthi bgodavar@codeaurora.org Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/bluetooth/hci_serdev.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/bluetooth/hci_serdev.c b/drivers/bluetooth/hci_serdev.c index 52e6d4d1608e3..69c00a3db5382 100644 --- a/drivers/bluetooth/hci_serdev.c +++ b/drivers/bluetooth/hci_serdev.c @@ -360,6 +360,7 @@ void hci_uart_unregister_device(struct hci_uart *hu) { struct hci_dev *hdev = hu->hdev;
+ clear_bit(HCI_UART_PROTO_READY, &hu->flags); hci_unregister_dev(hdev); hci_free_dev(hdev);