linux-toradex.git/drivers/acpi/acpica, branch v3.5.2

ACPICA: Fix possible fault in return package object repair code

2012-07-14T15:38:41+00:00

Fixes a problem that can occur when a lone package object is
wrapped with an outer package object in order to conform to
the ACPI specification. Can affect these predefined names:
_ALR,_MLS,_PSS,_TRT,_TSS,_PRT,_HPX,_DLM,_CSD,_PSD,_TSD

https://bugzilla.kernel.org/show_bug.cgi?id=44171

This problem was introduced in 3.4-rc1 by commit
6a99b1c94d053b3420eaa4a4bc8b2883dd90a2f9
(ACPICA: Object repair code: Support to add Package wrappers)

Reported-by: Vlastimil Babka 
Signed-off-by: Bob Moore 
Signed-off-by: Lin Ming 
Cc:  # 3.4
Signed-off-by: Len Brown

ACPI / PM: Leave Bus Master Arbitration enabled for suspend/resume

2012-07-10T19:50:59+00:00

This is an old suspend/resume lockup fix:

	commit 2780cc4660e1
	Author: Len Brown 
	Date:   Thu Dec 23 13:43:30 2004 -0500

	    [ACPI] Fix suspend/resume lockup issue
	    by leaving Bus Master Arbitration enabled.
	    The ACPI spec mandates it be disabled only for C3.

	    http://bugzilla.kernel.org/show_bug.cgi?id=3599

	    Signed-off-by: David Shaohua Li 
	    Signed-off-by: Len Brown 

The bug snuck back in in commit 2feec47d4c5f (ACPICA: ACPI 5: Support
for new FADT SleepStatus, SleepControl registers, 2012-02-14),
presumably by copy/pasting a copy of the code without that fix for the
legacy case.

On affected machines, after that commit, the machine locks up hard on
resume from suspend.  The same fix as seven years ago still works.

Addresses .

Reported-bisected-and-tested-by: Octavio Alvarez 
Reported-by: Adrian Knoth 
Signed-off-by: Jonathan Nieder 
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki

Revert "ACPI: ignore FADT reset-reg-sup flag"

2012-04-20T18:19:35+00:00

This reverts commit cf450136bfde77c7f95065c91bffded4aa7fa731.

It breaks reboot on at least one Thinkpad T43, as reported by Jörg Otte:
 "On reboot it shuts down as normal.
  The last lines displayed are:

  >Unmounting temporary filesystems.. [OK]
  >Deactivating swap...               [OK]
  >Unmounting local filesystems...    [OK]
  >Will now restart
  >    Restarting system

  Then I hear it accessing the cd-drive, but then it's being stuck."

Jörg bisected the regression to this commit.

That commit fixes another machine (see

  https://bugzilla.kernel.org/show_bug.cgi?id=11533

for details) that has a BIOS bug and doesn't support ACPI reset.
However, at least one of those other reporters no longer even has the
machine in question, and had a different workaround to begin with.
Besides, it clearly was a buggy BIOS.  Let's not break the correct case
to fix that case.

Reported-and-bisected-by: Jörg Otte 
Cc: linux-acpi@vger.kernel.org
Cc: Len Brown 
Cc: Peter Anvin 
Signed-off-by: Linus Torvalds

Merge branch 'tboot' into release

2012-03-30T20:38:59+00:00

Conflicts:
	drivers/acpi/acpica/hwsleep.c

Text conflict between:

2feec47d4c5f80b05f1650f5a24865718978eea4
(ACPICA: ACPI 5: Support for new FADT SleepStatus, SleepControl registers)

which removed #include "actables.h"

and

09f98a825a821f7a3f1b162f9ed023f37213a63b
(x86, acpi, tboot: Have a ACPI os prepare sleep instead of calling tboot_sleep.)

which removed #include 

The resolution is to remove them both.

Signed-off-by: Len Brown

Merge branches 'acpica', 'bgrt', 'bz-11533', 'cpuidle', 'ec', 'hotplug', 'misc', 'red-hat-bz-727865', 'thermal', 'throttling', 'turbostat' and 'video' into release

2012-03-30T20:10:37+00:00

Signed-off-by: Len Brown

ACPICA: Object repair code: Support to add Package wrappers

2012-03-30T05:45:13+00:00

Repair a common problem with objects that are defined to return
a variable-length Package of sub-objects. If there is only one
sub-object, some BIOS code mistakenly simply declares the single
object instead of a Package with one sub-object.  This function
attempts to repair this error by wrapping a Package object around
the original object, creating the correct and expected Package
with one sub-object.

Signed-off-by: Bob Moore 
Signed-off-by: Lin Ming 
Signed-off-by: Len Brown

ACPI: Move module parameter gts and bfs to sleep.c

2012-03-27T01:16:26+00:00

Move linux specific module parameter gts and bfs out of ACPICA core
code to sleep.c.

Signed-off-by: Lin Ming 
Signed-off-by: Len Brown

ACPICA: Sleep/Wake interfaces: optionally execute _GTS and _BFS

2012-03-27T01:16:25+00:00

Enhanced the sleep/wake interfaces to optionally execute the
_GTS method (Going To Sleep), and the _BFS method (Back From
Sleep).  Windows apparently does not execute these methods, and
therefore these methods are often untested. It has been seen on
some systems where the execution of these methods causes errors
and also prevents the machine from entering S5. It is therefore
suggested that host operating systems do not execute these methods
by default. In the future, perhaps these methods can be optionally
executed based on the age of the system and/or what is the newest
version of Windows that the BIOS asks for via _OSI.

Signed-off-by: Lin Ming 
Signed-off-by: Bob Moore 
Signed-off-by: Len Brown

ACPICA: Debugger: Add missing object info to namespace dump

2012-03-22T05:46:04+00:00

Many namespace node types must have an attached object. For
these node types, print a message about a missing object during
a namespace dump.

Signed-off-by: Bob Moore 
Signed-off-by: Lin Ming 
Signed-off-by: Len Brown

ACPICA: Change exception code for invalid pathname in acpi_evaluate_object

2012-03-22T05:45:57+00:00

Change the returned exception code from AE_BAD_PARAMETER to the
more appropriate AE_BAD_PATHNAME, when the input pathname to
evaluate object is invalid.

Signed-off-by: Bob Moore 
Signed-off-by: Lin Ming 
Signed-off-by: Len Brown