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Subject[v3.4-rc1] ACPI regression bisected

my Notebook ( Thinkpad T43) doesn't boot with V3.4-rc1.
The kernel stops booting after displaying the following:

ACPI: Core revision 20120320
ACPI: setting ELCR to 0200 (from 0800)
Performance Events: p6 PMU driver.
... version: 0
... bit width: 32
... generic registers: 2
... value mask: 00000000ffffffff
... max period: 000000007fffffff
... fixed-purpose events: 0
... event mask: 0000000000000003
devtmpfs: initialized
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem
0xe0000000-0xefffffff] (base 0xe0000000)
PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] reserved in E820
PCI: Using MMCONFIG for extended config space
PCI: Using configuration type 1 for base access
bio: create slab <bio-0> at 0
ACPI: Added _OSI(Module Device)
ACPI: Added _OSI(Processor Device)
ACPI: Added _OSI(3.0 _SCP Extensions)
ACPI: Added _OSI(Processor Aggregator Device)
ACPI: EC: EC description table is found, configuring boot EC

Comparing this with the displays of kernel v3.3 the next expected
outputs would be:

ACPI: Interpreter enabled
ACPI: (supports S0 S5)

I bisected the problem to commit:
6fe0d0628245fdcd6fad8b837c81e8f7ebc3364d "ACPI: Make ACPI interrupt threaded"

Please cc me I'm not subscribed.

Joerg Otte

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