https://bugzilla.kernel.org/show_bug.cgi?id=209141

            Bug ID: 209141
           Summary: DPC/AER kernel message is misleading in FW first mode
           Product: ACPI
           Version: 2.5
    Kernel Version: 5.8.0-rc1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Config-Hotplug
          Assignee: acpi_config-hotp...@kernel-bugs.osdl.org
          Reporter: david.ch...@hpe.com
        Regression: No

There are issues in how the OS advertises control of DPC and AER. 

In firmware controlled DPC mode, the kernel log shows:

[    0.199999] acpi PNP0A08:01: _OSC: platform does not support [SHPCHotplug
AER LTR]
[    0.200118] acpi PNP0A08:01: _OSC: OS now controls [PCIeHotplug PME
PCIeCapability DPC]

There are two problems with the above. 
1) In line one, the OS log states the platform does not support AER. However,
the platform does support AER. This kernel log statement is incorrect.

2) In line two, the OS log states the OS now controls DPC. This is not correct
as the firmware owns/controls both DPC and AER.

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