It looks like this dkms is actually needed so ignore my previous comment. ** Description changed:
+ [Impact] + + backport-iwlwifi-dkms fails to build on the latest jammy kernel 5.15: + CC [M] /tmp/backport-iwlwifi-dkms/drivers/net/wireless/intel/iwlwifi/mei/main.o In file included from /tmp/backport-iwlwifi-dkms/backport-include/asm-generic/bug.h:3, - from ./arch/x86/include/asm/bug.h:84, - from ./include/linux/bug.h:5, - from /tmp/backport-iwlwifi-dkms/backport-include/linux/bug.h:3, - from /tmp/backport-iwlwifi-dkms/backport-include/linux/kernel.h:4, - from ./include/linux/skbuff.h:13, - from /tmp/backport-iwlwifi-dkms/backport-include/linux/skbuff.h:3, - from ./include/linux/if_ether.h:19, - from /tmp/backport-iwlwifi-dkms/backport-include/linux/if_ether.h:3, - from ./include/linux/etherdevice.h:20, - from /tmp/backport-iwlwifi-dkms/backport-include/linux/etherdevice.h:3, - from /tmp/backport-iwlwifi-dkms/drivers/net/wireless/intel/iwlwifi/mei/main.c:6: + from ./arch/x86/include/asm/bug.h:84, + from ./include/linux/bug.h:5, + from /tmp/backport-iwlwifi-dkms/backport-include/linux/bug.h:3, + from /tmp/backport-iwlwifi-dkms/backport-include/linux/kernel.h:4, + from ./include/linux/skbuff.h:13, + from /tmp/backport-iwlwifi-dkms/backport-include/linux/skbuff.h:3, + from ./include/linux/if_ether.h:19, + from /tmp/backport-iwlwifi-dkms/backport-include/linux/if_ether.h:3, + from ./include/linux/etherdevice.h:20, + from /tmp/backport-iwlwifi-dkms/backport-include/linux/etherdevice.h:3, + from /tmp/backport-iwlwifi-dkms/drivers/net/wireless/intel/iwlwifi/mei/main.c:6: /tmp/backport-iwlwifi-dkms/drivers/net/wireless/intel/iwlwifi/mei/main.c: In function ‘iwl_mei_free_shared_mem’: /tmp/backport-iwlwifi-dkms/drivers/net/wireless/intel/iwlwifi/mei/main.c:243:17: error: implicit declaration of function ‘mei_cldev_dma_unmap’ [-Werror=implicit-function-declaration] - 243 | WARN_ON(mei_cldev_dma_unmap(cldev)); - | ^~~~~~~~~~~~~~~~~~~ + 243 | WARN_ON(mei_cldev_dma_unmap(cldev)); + | ^~~~~~~~~~~~~~~~~~~ + + [Test case] + + sudo apt install backport-iwlwifi-dkms + + [Fix] + + The driver assumes that kernels > 5.13 provide mei_cldev_dma_map/unmap() + when CONFIG_WLAN_VENDOR_INTEL_MEI is defined. + + However these functions and the config option are not available at all + in recent kernels. + + So instead of relying on the specific kernel version simply rely on the + availability of CONFIG_WLAN_VENDOR_INTEL_MEI to determine if the kernel + has the required functions defined, or if the driver needs to provide a + custom implementation of these functions. + + [Regression potential] + + We may see build errors in newer kernel if CONFIG_WLAN_VENDOR_INTEL_MEI + is merged upstream and these functions are actually provided by recent + kernels. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1951580 Title: backport-iwlwifi-dkms fails to build with kernel 5.15 jammy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1951580/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
