New ACPI errors since 4.11.11 on thinkpad T550

[Laurent Bigonville]

Hi,

I just upgraded to 4.11.11 (debian unstable) to day and now I see some 
new ACPI errors in dmesg:

[...]
[    0.326369] PM: Registering ACPI NVS region [mem 0xccbff000-0xccd7efff] (1572864 bytes)
[    0.326806] Error parsing PCC subspaces from PCCT
[    0.326839] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[    0.326840] ACPI: bus type PCI registered
[    0.326841] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[    0.327997] ACPI: Added _OSI(Module Device)
[    0.327998] ACPI: Added _OSI(Processor Device)
[    0.327998] ACPI: Added _OSI(3.0 _SCP Extensions)
[    0.327999] ACPI: Added _OSI(Processor Aggregator Device)
[    0.328006] ACPI : EC: EC started
[    0.328006] ACPI : EC: interrupt blocked
[    0.328793] ACPI: \: Used as first EC
[    0.328794] ACPI: \: GPE=0x25, EC_CMD/EC_SC=0x66, EC_DATA=0x62
[    0.328795] ACPI: \: Used as boot ECDT EC to handle transactions
[    0.332554] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    0.338391] ACPI Error: Needed type [Reference], found [Integer] ffff9d5cdada5900 (20170119/exresop-103)
[    0.338397] ACPI Exception: AE_AML_OPERAND_TYPE, While resolving operands for [OpcodeName unavailable] (20170119/dswexec-461)
[    0.338401] ACPI Error: Method parse/execution failed [\_PR.CPU0._PDC] (Node ffff9d5cdd0f3208), AE_AML_OPERAND_TYPE (20170119/psparse-543)
[    0.338648] ACPI: Dynamic OEM Table Load:
[    0.338656] ACPI: SSDT 0xFFFF9D5CDAD8C800 0005AA (v01 PmRef  ApIst    00003000 INTL 20120711)
[    0.339038] ACPI: Dynamic OEM Table Load:
[    0.339044] ACPI: SSDT 0xFFFF9D5CDAD81E00 000119 (v02 PmRef  ApCst    00003000 INTL 20120711)
[    0.339863] ACPI : EC: EC stopped
[    0.339864] ACPI : EC: EC started
[    0.339864] ACPI : EC: interrupt blocked
[    0.339988] ACPI: \_SB_.PCI0.LPC_.EC__: Used as first EC
[    0.339989] ACPI: \_SB_.PCI0.LPC_.EC__: GPE=0x25, EC_CMD/EC_SC=0x66, EC_DATA=0x62
[    0.339990] ACPI: \_SB_.PCI0.LPC_.EC__: Used as boot DSDT EC to handle transactions
[    0.339990] ACPI: Interpreter enabled
[    0.340022] ACPI: (supports S0 S3 S4 S5)
[    0.340022] ACPI: Using IOAPIC for interrupt routing
[    0.340416] PCI: MMCONFIG at [mem 0xf8000000-0xfbffffff] reserved in ACPI motherboard resources
[    0.340423] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[...]

This is coming from a lenovo thinkpad T550

Not sure if it's a real problem, but I'm reporting this anyway.

Regards,

Laurent Bigonville