evdi-dkms FTBS with the new hwe linux 6.8 in jammy

[Andrea Righi]

[Impact]

/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_fb.c: In function ‘evdifb_create’:
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_fb.c:421:23: error: ‘FBINFO_DEFAULT’ undeclared (first use in this function)
  421 | info->flags = FBINFO_DEFAULT;
      | ^~~~~~~~~~~~~~
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_fb.c:421:23: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [scripts/Makefile.build:243: /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_fb.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_drm_drv.c:16:
/var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_drm_drv.c:41:27: error: ‘DRM_UNLOCKED’ undeclared here (not in a function); did you mean ‘VM_LOCKED’?
   41 | DRM_UNLOCKED),
      | ^~~~~~~~~~~~
./include/drm/drm_ioctl.h:155:26: note: in definition of macro ‘DRM_IOCTL_DEF_DRV’
  155 | .flags = _flags, \
      | ^~~~~~
make[2]: *** [scripts/Makefile.build:243: /var/lib/dkms/evdi/1.12.0+dfsg/build/evdi_drm_drv.o] Error 1

[Test case]

 $ sudo apt instal evdi-dkms

[Fix]

Backport the changes from the evdi-dkms module in Noble to properly support the new 6.8 kernel ABI.

[Regression potential]

The EVDI module can be used to control multiple screens. We may experience regressions related to graphics / monitors in systems that are using this module, especially with the new hwe 6.8 kernel.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: evdi-dkms 1.12.0+dfsg-0ubuntu2~22.04.3
ProcVersionSignature: User Name 6.8.0-35.35.1~22.04.1-lowlatency 6.8.4
Uname: Linux 6.8.0-35-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: unknown
CloudArchitecture: x86_64
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSubPlatform: config-disk (/dev/vdb)
Date: Fri Jun 21 08:50:20 2024
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: evdi
UpgradeStatus: No upgrade log present (probably fresh install)