[Bug 1571506] Re: update-initramfs should include firmware from /lib/firmware/updates

[William Wilson]

The SRU verification passed for focal. The attached screenshot shows
firmware staged in /lib/firmware/updates that is not included in the
initramfs with version 0.136ubuntu6.3 of initramfs-tools, and then
correctly included in the initramfs with version 0.136ubuntu6.4 of
initramfs-tools.

** Attachment added: "Focal Verification"
   https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1571506/+attachment/5475867/+files/lp1571506_sru_verification.png

** Tags removed: verification-needed verification-needed-focal
** Tags added: verification-done verification-done-focal

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https://bugs.launchpad.net/bugs/1571506

Title:
  update-initramfs should include firmware from /lib/firmware/updates

Status in initramfs-tools package in Ubuntu:
  Fix Released
Status in initramfs-tools source package in Focal:
  Fix Committed
Status in initramfs-tools source package in Groovy:
  Fix Released
Status in initramfs-tools source package in Hirsute:
  Fix Released

Bug description:
  [Impact]

   * Firmware files under /lib/firmware/updates would not be
     processed when running update-initramfs
   
   * The kernel org specifies that this is a location where
     firmware can be stored, so we should search there

  [Test Case]

   * Stage some firmware under /lib/firmware/updates

   * Run update-initramfs and ensure that the firmware in 
     /lib/firmware/updates is found and included in the initramfs

  [Where problems could occur]

   * Since dpkg places no files in /lib/firmware/updates, we
     could end up picking up firmware changes that we did not intend

  [Other info]

   * This change already exists in groovy and beyond. It was pulled in
     when initramfs-tools version 0.137 was merged from Debian

  according to the kernel doc
  http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/firmware_class/README

  Linux kernel will search firmware from
  "/lib/firmware/updates/" UTS_RELEASE,
  "/lib/firmware/updates",
  "/lib/firmware/" UTS_RELEASE,
  "/lib/firmware"

  But the add module function in initramfs-tools won't search the
  "/lib/firmware/updates".

  This problem applies to all Ubuntu releases.

  Attach patch to fix this.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: initramfs-tools 0.103ubuntu4.2
  ProcVersionSignature: Ubuntu 4.2.0-30.36~14.04.1-generic 4.2.8-ckt3
  Uname: Linux 4.2.0-30-generic i686
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: i386
  CurrentDesktop: Unity
  Date: Mon Apr 18 14:24:29 2016
  InstallationDate: Installed on 2014-04-23 (725 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
  PackageArchitecture: all
  SourcePackage: initramfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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