ACPI patches for 2.6.22 - part 3

Hi Linus,

please pull from:

git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git release

This batch fixes two places where Linux currently fails to load tables of the format that we expect OEM's to soon ship -- OEMx and packages-as-method-arguments for _DSM. In both cases the changed code has no effect on systems without those needs.

The acpi_osi= boot parameter is expanded and invoked automatically via DMI for some systems that need it. We stop short here of changing the default to acpi_osi=Linux -- that waits for 2.6.23.
The Thinkpad commit is for a 2.6.22 regression,
as is the section mis-match build fix.

This will update the files shown below.

thanks!

-Len

ps. individual patches are available on [email protected]
and a consolidated plain patch is available here:
ftp://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/patches/release/2.6.22/acpi-release-20070126-2.6.22-rc3.diff.gz

 Documentation/kernel-parameters.txt |    5 -
 Documentation/thinkpad-acpi.txt     |   25 ++---
 drivers/acpi/numa.c                 |    2 
 drivers/acpi/osl.c                  |  118 +++++++++++++++++++++--
 drivers/acpi/tables/tbinstal.c      |    8 -
 drivers/acpi/thermal.c              |   13 +-
 drivers/acpi/utilities/utcopy.c     |  120 ++++++++++--------------
 drivers/acpi/utilities/uteval.c     |   28 +++++
 drivers/acpi/utilities/utobject.c   |   42 ++++++++
 drivers/acpi/utilities/utxface.c    |    4 
 drivers/misc/thinkpad_acpi.c        |   17 +--
 drivers/misc/thinkpad_acpi.h        |    6 -
 include/acpi/acpi_numa.h            |    2 
 include/acpi/acpiosxf.h             |    3 
 include/acpi/acpixf.h               |    2 
 include/acpi/acutils.h              |    2 
 16 files changed, 267 insertions(+), 130 deletions(-)

through these commits:

Bob Moore (1):
ACPICA: Support for external package objects as method arguments

Henrique de Moraes Holschuh (1):
ACPI: thinkpad-acpi: do not use named sysfs groups

Len Brown (4):
ACPICA: allow Load(OEMx) tables
ACPI: extend "acpi_osi=" boot option
ACPI: Make _OSI(Linux) a special case
ACPI: add __init to acpi_initialize_subsystem()

Thomas Renninger (1):
ACPI: thermal: Replace pointer with name in trip_points

Tony Luck (1):
ACPI: Section mismatch ... acpi_map_pxm_to_node

with this log:

commit c4d36a822e7c51cd6ffcf9133854d5e32489d269
Merge: fcf7535... dd272b5...
Author: Len Brown <[email protected]>
Date: Sat Jun 2 01:02:09 2007 -0400

Pull osi-now into release branch

commit fcf75356e9cf0460ef47a5b756bc3b0951ecab59
Merge: f285e3d... 6287ee3...
Author: Len Brown <[email protected]>
Date: Sat Jun 2 00:48:48 2007 -0400

Pull now into release branch

commit 6287ee32952b502c23d54f12895c3895ddbe5013

Author: Bob Moore <[email protected]>
Date:   Tue Apr 3 19:59:37 2007 -0400

ACPICA: Support for external package objects as method arguments

Implemented support to allow Package objects to be passed as method arguments to the acpi_evaluate_object interface. Previously, this would return an AE_NOT_IMPLEMENTED exception.

commit 8ff6f48d99a0351bcc9ceab422042ef9d3bad9aa

Author: Luck, Tony <[email protected]>
Date:   Thu May 24 13:57:40 2007 -0700

ACPI: Section mismatch ... acpi_map_pxm_to_node

Last of the "Section mismatch" errors from ia64 builds! acpi_map_pxm_to_node() is defined with attribute __cpuinit, but is called by "normal" kernel functions acpi_getnode() and acpi_map_cpu2node().

Commit f363d16fbb9374c0bd7f2757d412c287169094c9 moved the data structures on which this routine operates from __cpuinitdata to regular memory, so this routine can also move out of init space.

commit cc4c24e115ca7bc2e4ec74d70bcb8fda1d1a8df8

Author: Henrique de Moraes Holschuh <[email protected]>
Date:   Wed May 30 20:50:14 2007 -0300

ACPI: thinkpad-acpi: do not use named sysfs groups

The initial version of the thinkpad-acpi sysfs interface (not yet released in any stable mainline kernel) made liberal use of named sysfs groups, in order to get the attributes more organized.

This proved to be a really bad design decision. Maybe if attribute groups were as flexible as a real directory, and if binary attributes were not second-class citizens, the idea of subdirs and named groups would not have been so bad.

This patch makes all the thinkpad-acpi sysfs groups anonymous (thus removing the subdirs), adds the former group names as a prefix (so that hotkey/enable becomes hotkey_enable for example), and updates the documentation.

These changes will make the thinkpad-acpi sysfs ABI a lot easier to maintain.

commit dd272b5716a54afa33a69f2241284d8ec60b7892

Author: Len Brown <[email protected]>
Date:   Wed May 30 00:26:11 2007 -0400

ACPI: add __init to acpi_initialize_subsystem()

Add __init to:
acpi_initialize_subsystem() (and un-export it) acpi_os_initialize()

Add __initdata to:
acpi_osl_dmi_table[]

commit f507654d450d329c81a70eec0096d5dfe67802ec

Author: Len Brown <[email protected]>
Date:   Wed May 30 00:10:38 2007 -0400

ACPI: Make _OSI(Linux) a special case

_OSI("Linux") is like _OS("Linux"), it is ill-defined and virtually no BIOS vendors test interaction with it. As a result, it can do more damage than good because it causes the BIOS to follow un-tested paths.

Recently, several machines have turned up that erroneously test this string in a way which causes them to _not_ test other compatibility strings, including the ZI9 and Toshiba. So it appears that this bad code has made it into
a BIOS vendor's reference BIOS.

Linux has no choice but to stop advertising compatibility with _OSI string "Linux" - as there are an unbounded number of possible incompatibilities going forward.

But some BIOSes have already shipped which do use it for things like conditionally re-enabling video on resume from S3. (Too bad they didn't do that unconditionally)

Add special case code for _OSI(Linux) Squawk to dmesg if _OSI(Linux) is requested Add DMI list both to enable and disable _OSI(Linux) But for now, keep the default enabled via #define OSI_LINUX_ENABLED.

http://bugzilla.kernel.org/show_bug.cgi?id=7787

commit ae00d812436dc968f4a5dea7757b6a94910b6dc4

Author: Len Brown <[email protected]>
Date:   Tue May 29 18:43:33 2007 -0400

ACPI: extend "acpi_osi=" boot option

The boot option "acpi_osi=" has always disabled Linux _OSI support, thus disabling all OS Interface strings which are advertised by Linux to the BIOS.

Now...
acpi_osi="string" adds the interface string, and acpi_osi="!string" invalidates the pre-defined interface string

eg. acpi_osi="!Windows 2006"
would disable Linux's claim of Vista compatibility.

commit 68ccfaa8222f2a26f0689fad9e8c0c3f4c19f599

Author: Thomas Renninger <[email protected]>
Date:   Sun Nov 19 23:01:40 2006 +0100

ACPI: thermal: Replace pointer with name in trip_points

For users with active thermal trip points, they need the fan's name, rather than its address, to understand where to look to observe and control fan state.

commit 0efabac9b7c8535eeb199d2f16d3eb44dc4761b2

Author: Len Brown <[email protected]>
Date:   Thu May 24 02:25:00 2007 -0400

ACPICA: allow Load(OEMx) tables

HP and Hitachi machines have been implemented with SSDT's that use the "OEMx" signatures. But upon Load, ACPICA is rejecting these tables because they are not using the "SSDT" signature.

ACPI Error (tbinstal-0134): Table has invalid signature [OEMx], must be SSDT...