[PATCH 0/2][SRU][OEM-B]System hangs after play video from thunderbolt HDD and then S3

[AceLan Kao]

BugLink: https://bugs.launchpad.net/bugs/1834550

[Impact]
System hangs after played video from TBT storage, and then suspend the
system. It enters suspend correctly, but hangs during waking up.

[Fix]
There are 2 commits in upstream which fix this issue.
   95c80bc6952b PCI/PME: Fix hotplug/sysfs remove deadlock in pcie_pme_remove()
   3943af9d01e9 PCI: pciehp: Ignore Link State Changes after powering off a slot

[Test]
Verified on below thunderbolt interface with thunderbolt HDD
01:00.0 PCI bridge [0604]: Intel Corporation JHL6340 Thunderbolt 3
Bridge (C step) [Alpine Ridge 2C 2016] [8086:15da] (rev 02)

[Regression Potential]
Low, both commits have been SRU to Ubuntu Disco 5.0 kernel through
stable update, and the fix on remove functions are small and reasonable.

Rafael J. Wysocki (1):
  PCI/PME: Fix hotplug/sysfs remove deadlock in pcie_pme_remove()

Sergey Miroshnichenko (1):
  PCI: pciehp: Ignore Link State Changes after powering off a slot

 drivers/pci/hotplug/pciehp_ctrl.c |  4 ++++
 drivers/pci/pcie/pme.c            | 22 +++++++++++++++-------
 2 files changed, 19 insertions(+), 7 deletions(-)

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2.17.1