This bug is awaiting verification that the linux-azure-
nvidia-6.14/6.14.0-1006.6 kernel in -proposed solves the problem. Please
test the kernel and update this bug with the results. If the problem is
solved, change the tag 'verification-needed-noble-linux-azure-
nvidia-6.14' to 'verification-done-noble-linux-azure-nvidia-6.14'. If
the problem still exists, change the tag 'verification-needed-noble-
linux-azure-nvidia-6.14' to 'verification-failed-noble-linux-azure-
nvidia-6.14'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-noble-linux-azure-nvidia-6.14-v2 
verification-needed-noble-linux-azure-nvidia-6.14

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.14 in Ubuntu.
https://bugs.launchpad.net/bugs/2115478

Title:
  [SRU] Add waiting latency for USB port resume

Status in HWE Next:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem-6.14 package in Ubuntu:
  Invalid
Status in linux source package in Noble:
  Won't Fix
Status in linux-oem-6.14 source package in Noble:
  Fix Released
Status in linux source package in Plucky:
  Fix Released
Status in linux-oem-6.14 source package in Plucky:
  Invalid
Status in linux source package in Questing:
  Fix Released
Status in linux-oem-6.14 source package in Questing:
  Invalid

Bug description:
  [ Impact ]

  On certain USB3 device topologies, the hub will enter runtime resume
  before the down stream device to wake up. When a device is connect to
  such hub, the hub will enter runtime resume before the device
  generates any activities, making it not able to get detected.

  [ Fix ]

  ========================= OEM-6.14 =======================================
  Cherry-pick the following commit:

  1. [PATCH v2] usb: hub: fix detection of high tier USB3 devices behind
  suspended hubs[1]

  ========================= Plucky ============================

  Cherry-pick the following commit:

  1. usb: hub: fix detection of high tier USB3 devices behind suspended
  hubs[1]

  and backport the subsequent two commits, which fix an issue caused by
  the commit above:

  2. usb: hub: Fix flushing and scheduling of delayed work that tunes runtime pm
  3. usb: hub: Fix flushing of delayed work used for post resume purposes

  [ Test ]

  1. Connect SD25TB5/WD25TB5 dock to SUT.
  2. Connect USB3.0/3.1 sotarge to dock's USB port.
  3. The USB storage should be recognized.

  [ Where problems could occurs ]

  This may increase resume latency for deeper USB device hierarchy.

  [ Additional Information ]

  [1] https://lore.kernel.org/linux-
  usb/[email protected]/

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