** No longer affects: linux (Ubuntu) ** No longer affects: linux (Ubuntu Jammy)
-- 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/1951580 Title: backport-iwlwifi-dkms fails to build with kernel 5.15 jammy Status in backport-iwlwifi-dkms package in Ubuntu: Fix Released Status in backport-iwlwifi-dkms source package in Jammy: Fix Released Bug description: [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: /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)); | ^~~~~~~~~~~~~~~~~~~ [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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/backport-iwlwifi-dkms/+bug/1951580/+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
