Adapt older Nvidia kernel module for use on 5.4

I have an old Nvidia GRID K2 graphics card which I want to get working on Ubuntu 20.04. The driver is available from: [login to view URL] It hasn't been updated since 2018 so sadly does not build cleanly against the 5.x sources - ideally I'd like a patch which I can apply which resolves the build issues and gcc issues. The latest patch I could find which allows the modules to build against Linux 4.18 are here: [login to view URL] To be clear - what I need here is: - Someone with Linux kernel development experience I am NOT looking for help to simply install the nvidia drivers - they will not build against my kernel sources. Thanks!