Public bug reported:
[ Impact ]
evdi-dkms does not compile from source in Noble with kernel 6.11:
/var/lib/dkms/evdi/1.14.2+dfsg/build/evdi_platform_drv.c:205:19: error:
initialization of ‘void (*)(struct platform_device *)’ from incompatible
pointer type ‘int (*)(struct platform_device *)’
[-Werror=incompatible-pointer-types]
205 | .remove = evdi_platform_device_remove,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/evdi/1.14.2+dfsg/build/evdi_gem.c: In function ‘evdi_gem_vmap’:
/var/lib/dkms/evdi/1.14.2+dfsg/build/evdi_gem.c:319:25: error: implicit
declaration of function ‘vmap’; did you mean ‘kmap’?
[-Werror=implicit-function-declaration]
319 | obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
| ^~~~
| kmap
/var/lib/dkms/evdi/1.14.2+dfsg/build/evdi_gem.c:319:23: warning: assignment to
‘void *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
319 | obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
| ^
/var/lib/dkms/evdi/1.14.2+dfsg/build/evdi_gem.c: In function ‘evdi_gem_vunmap’:
/var/lib/dkms/evdi/1.14.2+dfsg/build/evdi_gem.c:355:17: error: implicit
declaration of function ‘vunmap’; did you mean ‘kunmap’?
[-Werror=implicit-function-declaration]
355 | vunmap(obj->vmapping);
| ^~~~~~
| kunmap
[ Test case ]
Install the latest linux-6.11 kernel on Noble:
$ sudo add-apt-repository ppa:canonical-kernel-team/ppa
$ sudo apt update
$ sudo apt install linux-image-6.11.0-12-generic \
linux-modules-6.11.0-12-generic \
linux-modules-extra-6.11.0-12-generic \
linux-headers-6.11.0-12-generic
Install evdi-dkms:
$ sudo apt install evdi-dkms
Load the module:
$ sudo modprobe evdi
[ Fix ]
Patch the code to properly support the new linux 6.11 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 kernels >= 6.11.
** Affects: evdi (Ubuntu)
Importance: Undecided
Assignee: Massimiliano Pellizzer (mpellizzer)
Status: In Progress
** Affects: evdi (Ubuntu Noble)
Importance: Undecided
Status: In Progress
** Also affects: evdi (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: evdi (Ubuntu Noble)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/2091354
Title:
evdi-dkms FTBS in Noble with linux-6.11-hwe kernel
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