Public bug reported:

[Impact]
On some thinkpad laptops, Realtek USB3.0 Card Reader [0bda:0328] reports wrong 
port status on
Cannon lake PCH USB3.1 xHCI [8086:a36d] after resume from S3, then kernel hang.

[Fix]
Restrict the USB2 resume status check in USB2 roothub to fix hang issue.

[Test Case]
Suspend/resume 30 times OK.

[Regression Potential]
Low, upstream fix cherry-picked.

These 2 patches are already Cc: sta...@vger.kernel.org, cosmic and
future kernel will get these 2 patches.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1805344

Title:
  SRU: Fix kernel xhci hang when resume from S3

Status in linux package in Ubuntu:
  New

Bug description:
  [Impact]
  On some thinkpad laptops, Realtek USB3.0 Card Reader [0bda:0328] reports 
wrong port status on
  Cannon lake PCH USB3.1 xHCI [8086:a36d] after resume from S3, then kernel 
hang.

  [Fix]
  Restrict the USB2 resume status check in USB2 roothub to fix hang issue.

  [Test Case]
  Suspend/resume 30 times OK.

  [Regression Potential]
  Low, upstream fix cherry-picked.

  These 2 patches are already Cc: sta...@vger.kernel.org, cosmic and
  future kernel will get these 2 patches.

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