On Fri, Mar 17, 2023 at 12:34:26PM +0100, Álvaro Fernández Rojas wrote: > b53 MMAP devices have a MDIO Mux bus controller that must be registered after > properly initializing the switch. If the MDIO Mux controller is registered > from a separate driver and the device has an external switch present, it will > cause a race condition which will hang the device. Could you describe the race in more details? Why does it hang the device?