[Bug 2076262] Re: Failed to build against linux-6.11

[You-Sheng Yang]

Resubmit debdiff for Noble to drop dh-dkms patch according to review
comments from bug 2076263. The PPA is also updated with new version
0~git202406240945.aecec2aa-0ubuntu2~24.04.2+ppa.1. The "+ppa.1" appendix
was added to satisfy PPA policy.

** Patch added: "ipu6-drivers_0~git202406240945.aecec2aa-0ubuntu2~24.04.2.noble.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/ipu6-drivers/+bug/2076262/+attachment/5810600/+files/ipu6-drivers_0~git202406240945.aecec2aa-0ubuntu2~24.04.2.noble.debdiff

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https://bugs.launchpad.net/bugs/2076262

Title:
  Failed to build against linux-6.11

Status in ipu6-drivers package in Ubuntu:
  Fix Released
Status in ipu6-drivers source package in Noble:
  In Progress
Status in ipu6-drivers source package in Oracular:
  Fix Released

Bug description:
  [SRU Justification]

  [Impact]

  Upstream commit d69d804845985 ("driver core: have match() callback in
  struct bus_type take a const *") added const attribute the the second
  parameter of the match callback, and this fails the build against
  linux-6.11.

  [Fix]

  Ubuntu sauced change to accommodate to the API change. Also proposed
  to the upstream as https://github.com/intel/ipu6-drivers/pull/261.

  [Test Case]

  1. install kernel headers packages. This should include kernel headers for generic-6.8, oem-6.8, linux-hwe-6.8/jammy according to kernel-versions dkms map. linux-oem-6.5 is outdated therefore is skipped here.
  2. install intel-ipu6-dkms from -proposed and trigger dkms builds on all mentioned kernel versions
  3. reboot into the kernels to check if intel-ipu6 module was loaded automatically as before.

  [Where problems could occur]

  For Oracular, there is a new upstream release mostly for a next Intel
  platform, but there are also code refinements as well. No specious
  side effect found.

  For Noble, there is only preprocessor macros to satisfy the API
  compatibility.

  [Other Info]

  ipu6-drivers/oracular is used in linux/oracular and linux-
  oem-6.11/noble, and ipu6-drivers/noble is used in linux/noble, linux-
  oem-6.8/noble and linux-hwe-6.8/jammy. The Noble SRU is only to
  satisfy compiling ipu6-drivers/noble against linux-oem-6.11/noble, but
  that's not how linux-modules-ipu6-oem-24.04b is built.

  ========== original bug report ==========

  /var/lib/dkms/ipu6-drivers/0~git202406240945.aecec2aa-0ubuntu2/build/drivers/media/pci/intel/ipu6/../ipu-bus.c:145:18: error: initialization of 'int (*)(struct device
  *, const struct device_driver *)' from incompatible pointer type 'int (*)(struct device *, struct device_driver *)' [-Wincompatible-pointer-types]
    145 |         .match = ipu_bus_match,
        |                  ^~~~~~~~~~~~~

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