This driver is not useful for s390 so we should not change the kernel config just to get it building. An example was posted of how to disable a dkms build based on whether a required option is enabled the the kernel config, here:
https://bugs.launchpad.net/ubuntu/+source/acpi- call/+bug/1830040/comments/8 I think we should try something similar here. ** Also affects: ddcci-driver-linux (Ubuntu) Importance: Undecided Status: New ** Changed in: ddcci-driver-linux (Ubuntu) Importance: Undecided => High ** Changed in: ddcci-driver-linux (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1837073 Title: linux 5.2.0-8.9 disabled backlight on s390x. Status in ddcci-driver-linux package in Ubuntu: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: Looks like ddcci-driver-linux started to fail on s390x with the switch from kernel 5.0.0-21-generic to 5.2.0-8-generic http://autopkgtest.ubuntu.com/packages/d/ddcci-driver-linux/eoan/s390x According to changelog and diff: - [Config] CONFIG_BACKLIGHT_CLASS_DEVICE=n on s390x from Seth Forshee. According to the build log of ddci backlight rm: cannot remove '.tmp_versions/ddcci-backlight.mod': No such file or directory Makefile:227: ================= WARNING ================ Makefile:228: 'SUBDIRS' will be removed after Linux 5.3 Makefile:229: Please use 'M=' or 'KBUILD_EXTMOD' instead Makefile:230: ========================================== Makefile:227: ================= WARNING ================ Makefile:228: 'SUBDIRS' will be removed after Linux 5.3 Makefile:229: Please use 'M=' or 'KBUILD_EXTMOD' instead Makefile:230: ========================================== ERROR: "devm_backlight_device_register" [/var/lib/dkms/ddcci/0.3.2/build/ddcci-backlight/ddcci-backlight.ko] undefined! make[3]: *** [scripts/Makefile.modpost:91: __modpost] Error 1 make[2]: *** [Makefile:1628: modules] Error 2 make[1]: *** [Makefile:37: ddcci-backlight.ko] Error 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ddcci-driver-linux/+bug/1837073/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
