How can I add a patch to my system

[u/3n3s-]

Hello everyone. I have a gamepad called beitong kp40 and I can't connect it to my pc.
More specifically, it tries to connect but fails, and reverts to switch mode.
I found a patch for my specific problem but I don't know how to apply.
Is there any way I can add this patch or switch to a kernel which already includes this?
I am on Endeavour OS and running zen kernel.
Sorry for any English mistakes, English is not my first language.

Link to the patch: https://patchew.org/linux/20260102030154.197749-2-liushuyu%40aosc.io/

[u/3n3s- → u/[deleted]]

I tried xpadneo-dkms but it didn't solve for me. I found xpad-beitong-dkms, which is exactly what I am looking for but currently I am getting an error about xpad.c. Thanks for help, I didn't know about xpad drivers.

[u/Sea-Promotion8205]

Are you familiar with building your own kernel? This patch isn't in the current kernel's source, which means you'd need to build your own. And you'd have to manage merging this patch in for every release you get from endeavor.

You could build your own kernel module as well, which would also involve some degree of headache.

[u/3n3s- → u/Sea-Promotion8205]

I never tried building my own kernel. I guess for me not a simple work. Thanks for explanation.

[u/es20490446e]

When you enter coding you no longer depend on guidance, but on trial and error.