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[Andy Whitcroft <apw@xxxxxxxxxxxxx>]

This bug was nominated against a series that is no longer supported, ie
yakkety.  The bug task representing the yakkety nomination is being
closed as Won't Fix.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu Yakkety)
       Status: Fix Committed => Won't Fix

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https://bugs.launchpad.net/bugs/1704435

Title:
  [Xenial] nvme: Quirks for PM1725 controllers

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Yakkety:
  Won't Fix
Status in linux source package in Zesty:
  Fix Committed
Status in linux source package in Artful:
  Fix Committed

Bug description:
  == SRU Xenial ==
  Pick up the following device quirk to resolve a hardware/firmware bug affectung some NVMe drives that use the PM1725 controller. Under adverse circumstances the bug can result in data corruption and loss. 

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d554b5e1ca64d23e4f839e6531490fee8479fbaf

  nvme: Quirks for PM1725 controllers
  PM1725 controllers have a couple of quirks that need to be handled in
  the driver:

   - I/O queue depth must be limited to 64 entries on controllers that do
     not report MQES.

   - The host interface registers go offline briefly while resetting the
     chip. Thus a delay is needed before checking whether the controller
     is ready.

  Note that the admin queue depth is also limited to 64 on older versions
  of this board. Since our NVME_AQ_DEPTH is now 32 that is no longer an
  issue.

  Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
  Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx>

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