/dev/smi not found on Ubuntu 24.04 aarch64 while all modules present and loaded

[alphafox02]

@meexmachina I hope all is well - I'm hoping if there's any time you have to spare - could you take a look at a bone stock version of 24.04 Ubuntu for the Raspberry Pi (kernel 6.8) or the latest version of DragonOS Pi64 (based on 24.04).

All the same steps performed as previously, with the modification mentioned here

smi_stream_class = class_create(THIS_MODULE, DEVICE_NAME);

Modify it to:

smi_stream_class = class_create(DEVICE_NAME);

And this PR

#227

Result in a success/no errors during compiling all software. All smi modules show as loaded, yet there's simply no /dev/smi created when using 24.04. I'm trying to understand if perhaps the code here needs tweaking or what could possibly be the difference in this case?

https://github.com/cariboulabs/cariboulite/tree/main/software/libcariboulite/src/caribou_smi

[sjunger]

I have the same problem with DragonOS 39 on a RaspPi 4.

When compiling, I get the following error (see screenshot).

[sjunger]

[alphafox02]

I believe the same will be experienced on a bone stock install of 24.04 Ubuntu on Pi4. I’m not sure what changed in kernel or the Ubuntu OS.