On 19.05.22 15:29, Dmytro Bagrii wrote: > A driver may use devres allocations. Disconnect handler is not needed in > this case. Allow such driver to leave .disconnect field uninitialized in > struct usb_driver instead of providing empty stub function. It is needed. disconnect() means that you have to give up ownership of the interface and must cease IO. That cannot be done with devres. I am pretty sure that a driver without disconnect() is buggy. disconnect() is the one method that is really not optional. Regards Oliver
