MANUAL_CONTROL packets are still generated after joystick module unloaded.

Unloading joystick does not stop MANUAL_CONTROL packets from being produced, ans so the autopilot will not return control to RC input.
The packets should cease if module unloaded, and/or , the joystick module should even detect disconnection of USB joystick.

Start by tracing the joystick module's unload path and the code that produces MANUAL_CONTROL packets. Reproduce unloading the module with a joystick connected, then verify that packets cease and RC input control returns; the issue also mentions detecting USB joystick disconnection, but does not define that behavior further.

Written by the indexing model from the issue text.