linux-kernel - [v3.4-rc1] ACPI regression bisected

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Date:	Mon, 2 Apr 2012 17:05:04 +0200
From:	Jörg Otte <jrg.otte@...glemail.com>
To:	linux-kernel@...r.kernel.org
Cc:	Len Brown <lenb@...nel.org>, Andi Kleen <ak@...ux.intel.com>
Subject: [v3.4-rc1] ACPI regression bisected

Hi,

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.

Regards,
Joerg Otte
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