Public bug reported:

Starting since ipu6-drivers/questing, version
0~git202506270118.9bff7368-0ubuntu1, the build failed with multiple
errors. The upstream commit 1f64d8c9f075 ("Update based on build
20250212_1315_368 for development") under upstream tag 20250625_1415_509
introduced additional updates in regard to ipu6-bus DMA changes in
kernels >= 6.12.2, and Canonical's fix landed in bug 2100861 should be
updated as well.

While this is a dkms, people take new dkms and compile against older
kernels, so even v6.11 kernels are not in Resolute/Questing, the dkms
itself deserves a fix.

** Affects: ipu6-drivers (Ubuntu)
     Importance: Low
     Assignee: You-Sheng Yang (vicamo)
         Status: In Progress

** Affects: ipu6-drivers (Ubuntu Jammy)
     Importance: Undecided
         Status: Invalid

** Affects: ipu6-drivers (Ubuntu Noble)
     Importance: Undecided
         Status: Invalid

** Affects: ipu6-drivers (Ubuntu Plucky)
     Importance: Undecided
         Status: Invalid

** Affects: ipu6-drivers (Ubuntu Questing)
     Importance: Undecided
         Status: Confirmed

** Affects: ipu6-drivers (Ubuntu Resolute)
     Importance: Low
     Assignee: You-Sheng Yang (vicamo)
         Status: In Progress

** Attachment added: "make_6.11.0-29-generic.log"
   
https://bugs.launchpad.net/bugs/2134695/+attachment/5932795/+files/make_6.11.0-29-generic.log

** Description changed:

- Starting since ipu6-drivers/questing, version 
0~git202506270118.9bff7368-0ubuntu1, the build failed with multiple errors. The 
upstream commit 1f64d8c9f075 ("Update based on build 20250212_1315_368 for 
development
- ") under upstream tag 20250625_1415_509 introduced additional updates in 
regard to ipu6-bus DMA changes in kernels >= 6.12.2, and Canonical's fix landed 
in bug 2100861 should be updated as well.
+ Starting since ipu6-drivers/questing, version
+ 0~git202506270118.9bff7368-0ubuntu1, the build failed with multiple
+ errors. The upstream commit 1f64d8c9f075 ("Update based on build
+ 20250212_1315_368 for development") under upstream tag 20250625_1415_509
+ introduced additional updates in regard to ipu6-bus DMA changes in
+ kernels >= 6.12.2, and Canonical's fix landed in bug 2100861 should be
+ updated as well.
+ 
+ While this is a dkms, people take new dkms and compile against older
+ kernels, so even v6.11 kernels are not in Resolute/Questing, the dkms
+ itself deserves a fix.

** Also affects: ipu6-drivers (Ubuntu Resolute)
   Importance: Undecided
       Status: New

** Also affects: ipu6-drivers (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: ipu6-drivers (Ubuntu Questing)
   Importance: Undecided
       Status: New

** Also affects: ipu6-drivers (Ubuntu Plucky)
   Importance: Undecided
       Status: New

** Also affects: ipu6-drivers (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Changed in: ipu6-drivers (Ubuntu Jammy)
       Status: New => Invalid

** Changed in: ipu6-drivers (Ubuntu Noble)
       Status: New => Invalid

** Changed in: ipu6-drivers (Ubuntu Plucky)
       Status: New => Invalid

** Changed in: ipu6-drivers (Ubuntu Questing)
       Status: New => Confirmed

** Changed in: ipu6-drivers (Ubuntu Resolute)
       Status: New => In Progress

** Changed in: ipu6-drivers (Ubuntu Resolute)
   Importance: Undecided => Low

** Changed in: ipu6-drivers (Ubuntu Resolute)
     Assignee: (unassigned) => You-Sheng Yang (vicamo)

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https://bugs.launchpad.net/bugs/2134695

Title:
  failed to build against linux kernel < v6.12.5

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