Public bug reported:

== SRU Justification ==
[Impact]
Some QCA ROME bluetooth devices does not work after runtime suspend/resume 
after SRU LP: #1734020.

[Fix]
The commit let btusb reset at second time it resume, i.e. btusb_open(). The 
btusb stops working because the reset happens *after* btusb_open(). The reset 
should be done at hub port initialization, before btusb_probe().

Revert the bad commit and use the reset-resume quirk in USB core stack.

[Test]
Cherry-picked the commit into Artful/OEM kernel and the issue is fixed.

[Regression Potential]
Low. This is limited to QCA Rome, also verified by the original quirk author.

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

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https://bugs.launchpad.net/bugs/1741206

Title:
  QCA Rome bluetooth failed to work after applying reset-resume quirk

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