Hi Greg,

for the Bluetooth subsystem integration into the driver model it is
required that we can update the device of a class device at any time.

For the RFCOMM TTY device for example we create the TTY device and only
when it got opened we create the Bluetooth connection. Once this new
connection has been created we have a device to attach to the class
device of the TTY.

I came up with the attached patch and it worked fine with the Bluetooth
RFCOMM layer.

Regards

Marcel