On Sat, Dec 07, 2024 at 11:06:15AM +0100, Heiner Kallweit wrote: [..a lot of full quotes.. Guys, can you please fix your email to actually be readable. Having to delete dozens of pages of crap is really infuriating] > Issue with this approach is that these "mdev parent" devices are partially > class devices belonging to other classes. See for example mtty_dev_init(), > there the device passed to us belongs to class mtty. The samples don't matter and can be fixed any time. Or even better deleted. The real question is if the i915, ccw and ap devices are class devices. From a quick unscientific grep they appear not to, but we'd need to double check that. (btw, drm_class_device_register in drm is entirely unused)