[Bug 1842284] Re: initramfs does not copy ehci-platform

[Adam Conrad]

What kernel is it that includes an ehci-platform driver?  I'm not seeing
it in linux or linux-hwe in xenial.

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Title:
  initramfs does not copy ehci-platform

Status in initramfs-tools package in Ubuntu:
  Fix Released
Status in initramfs-tools source package in Xenial:
  In Progress
Status in initramfs-tools source package in Bionic:
  Fix Released
Status in initramfs-tools source package in Disco:
  Fix Released
Status in initramfs-tools source package in Eoan:
  Fix Released

Bug description:
  [Impact]
  If you install Ubuntu onto USB storage behind a Platform USB host controller, it will not be able to boot because the generated initramfs will not include the host controller driver.

  [Test Case]
  Install to a USB stick attached to platform USB controller and reboot. Booting will fail because it will be unable to find the root file system.

  [Regression Risk]
  Driver is only loaded when system requires ehci-platform, minimizing the impact to all other systems.

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