kernel modding (sources?)

[challenge]

Hello, I would like to edit a few lines in the kernel (HDMI stuff in the bcm2835-pcm.c ).
I already done it years ago but it was moode v6.

I see that kernel on 8.3.9 is Linux moode 6.1.21-v8+ #1642 SMP PREEMPT

source for 6.1.21 seems this (last commit before 6.1.22)
https://github.com/raspberrypi/linux/com...0177feb7ed

confirmed here
https://forums.raspberrypi.com/viewtopic...9#p2139349

the question is...
is moode kernel stock bullseye? aka can I just compile those, drop it all in the /boot partition and it will work as stock or I am missing patches/custom tweaks?

thank you

[bitlab]

The kernel is a kind of stock, we just replaced a few modules.

Currently we have supplied pached the in tree loop and pc1794a (which is used which is used with general i2s slaves) modules.
But instead of rebuilding the entire kernel we only rebuild those specific modules and deploy those as prebuild dkms with an own deb package per module.
(see for example https://github.com/moode-player/pkgbuild...ages/aloop)