[PATCH 0/1][SRU][N] a critical typo in the code managing the ASPM settings for PCI Express devices

[AceLan Kao]

From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/2071889

[Impact]
The typo in the original code led to the PCI_EXP_LNKCTL register values
being swapped between the parent PCI device and its child device.
It may lead to incorrect power state, device malfunction on system
resume, or potential data loss or system stability issues.

[Fix]
Kaiheng submitted a patch to fix the issue and has been included in v6.9
mainline kernel.
f3d049b35b01 PCI/ASPM: Restore parent state to parent, child state to child

[Test]
There is no test cases for the issue now.

[Where problems may occur]
It fixes the typo and should not introduce any regression.

Kai-Heng Feng (1):
  PCI/ASPM: Restore parent state to parent, child state to child

 drivers/pci/pcie/aspm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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2.43.0