Commit Graph

830 Commits

Author SHA1 Message Date
Len Brown
aac60c1113 Pull bugzilla-8346 into release branch 2007-04-28 23:19:25 -04:00
Len Brown
12a5a71212 Pull sbs into release branch 2007-04-28 23:16:59 -04:00
Len Brown
14d2178588 Pull dock into release branch 2007-04-28 23:13:03 -04:00
Len Brown
03feb05246 Pull ec into release branch 2007-04-28 23:12:56 -04:00
Len Brown
fb16596997 Pull misc-for-upstream into release branch 2007-04-28 23:12:03 -04:00
Len Brown
f188291aec Pull thinkpad into release branch
Conflicts:

	drivers/misc/Kconfig

Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-28 23:11:19 -04:00
Bob Moore
79fff27002 ACPICA: clear fields reserved before FADT r3
Linux-2.6.21 stopped booting on a P4/HT because Linux
wrote the FADT.CST_CNT value to the SMI_CMD.
Apparently this stumbled over some SMM instability,
such as confusing SMM when invoking it from cpu1.

Linux did this because even though the r2 FADT reserves
the CST_CNT field, this BIOS set that field and Linux
used it.

Turns out that up through 2.6.20 we explicitly cleared
cst_control for r2 FADTs.  So here we go back to doing that,
plus also clear some additional fields that are reserved
until FADT r3.

http://bugzilla.kernel.org/show_bug.cgi?id=8346

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-28 20:55:06 -04:00
Thomas Renninger
632786ce9f [CPUFREQ] Remove deprecated /proc/acpi/processor/performance write support
Remove deprecated /proc/acpi/processor/performance write support

Writing to /proc/acpi/processor/xy/performance interferes with sysfs
cpufreq interface. Also removes buggy cpufreq_set_policy exported symbol.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>
2007-04-26 14:32:02 -04:00
David Brownell
8aa55591bf ACPI: make /proc/acpi/wakeup more useful
This updates /proc/acpi/wakeup to be more informative, primarily by showing
the sysfs node associated with each wakeup-enabled device.  Example:

	Device	S-state	  Status   Sysfs node
	PCI0	  S4	 disabled  no-bus:pci0000:00
	PS2M	  S4	 disabled  pnp:00:05
	PS2K	  S4	 disabled  pnp:00:06
	UAR1	  S4	 disabled  pnp:00:08
	USB1	  S3	 disabled  pci:0000:00:03.0
	USB2	  S3	 disabled  pci:0000:00:03.1
	USB3	  S3	 disabled
	USB4	  S3	 disabled  pci:0000:00:03.3
	S139	  S4	 disabled
	LAN	  S4	 disabled  pci:0000:00:04.0
	MDM	  S4	 disabled
	AUD	  S4	 disabled  pci:0000:00:02.7
	SLPB	  S4	*enabled

Eventually this file should be removed, but until then it's almost the only
way we have to tell how the relevant ACPI tables are broken (and cope).  In
that example, two devices don't actually exist (USB3, S139), one can't issue
wakeup events (PCI0), and two seem harmlessly (?) confused (MDM and AUD are
the same PCI device, but it's the _modem_ that does wake-on-ring).

In particular, we need to be sure driver model nodes are properly hooked
up before we can get rid of this ACPI-only interface for wakeup events.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25 15:20:10 -04:00
Borislav Petkov
cf6c6045a0 ACPI: word-smith kconfig help
Signed-off-by: <bbpetkov@yahoo.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25 14:29:50 -04:00
Bjorn Helgaas
0c0e892101 ACPI: use _STA bit names rather than 0x0F
Be explicit about what "device->status = 0x0F" really means.

syntax only.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25 14:20:58 -04:00
Bjorn Helgaas
a0bd4ac498 ACPI: Remove duplicate definitions for _STA bits
No need to duplicate the existing definitions in include/acpi/actypes.h.

syntax only -- no functional change.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25 14:17:39 -04:00
Ray Lee
d8938801d1 ACPI: remove duplicate include
Thomas's patch for including <asm/apic.h> for x86 UP builds came into
Linus's tree from two different directions, both of which were merged.
This reverts the latter, yanking out the duplicate #include and comment.

Signed-off-by: Ray Lee <ray-lk@madrabbit.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25 14:12:00 -04:00
Andrew Morton
94e22e13ad acpi-thermal: fix mod_timer() interval
Use relative time, not absolute.  Discovered by Jung-Ik (John) Lee
<jilee@google.com>.

Cc: Jung-Ik (John) Lee <jilee@google.com>
Acked-by: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-24 08:23:08 -07:00
Len Brown
4e381a4f06 Revert "ACPI: parse 2nd MADT by default"
This reverts commit 09fe58356d.
http://bugzilla.kernel.org/show_bug.cgi?id=8283

Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-30 14:16:10 -04:00
Randy Dunlap
62a6d7fd9b ACPI: dock: use NULL for pointer
Use NULL instead of 0 for pointers:
drivers/acpi/dock.c:677:75: warning: Using plain integer as NULL pointer

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-28 23:31:43 -04:00
Henrique de Moraes Holschuh
3ede41c718 ACPI: ibm-acpi: move driver to drivers/misc hierarchy
ibm-acpi is not an ACPICA driver, so move it to drivers/misc as per Len
Brown's request.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-25 23:37:55 -04:00
Henrique de Moraes Holschuh
a62bc916cf ACPI: ibm-acpi: update copyright notice
Update copyright and license info on the source code comments.  No
functional changes.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-25 23:37:54 -04:00
Henrique de Moraes Holschuh
56b6aeb058 ACPI: ibm-acpi: organize code
Shuffle code around to better organize the driver code inside the
ibm-acpi.c file.

This patch adds no functional changes.  It is pure fluff that will make me
a bit more productive.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-25 23:37:54 -04:00
Henrique de Moraes Holschuh
1406cdd176 ACPI: ibm-acpi: add header file
Add a (private) header file for ibm-acpi, and move type definitions and
ThinkPad driver constants to the new header file.

This patch has no functional changes.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-25 23:37:54 -04:00
Henrique de Moraes Holschuh
e062e03438 ACPI: ibm-acpi: rename some identifiers
Rename some identifiers so that they are more in tune with the rest of the
driver code, or less generic.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-25 23:37:54 -04:00
Henrique de Moraes Holschuh
837ca6ddb4 ACPI: ibm-acpi: kill trailing whitespace
I shall protect the ibm-acpi city against the invasion of the barbarian
blanks!  To the unforgiving jaws of sed s/[[:blank:]]\+$// they go!

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-25 23:37:54 -04:00
Thomas Gleixner
e585bef815 [PATCH] i386: add command line option "local_apic_timer_c2_ok"
It turned out that it is almost impossible to trust ACPI, BIOS & Co.
regarding the C states. This was the reason to switch the local apic
timer off in C2 state already. OTOH there are sane and well behaving
systems, which get punished by that decision.

Allow the user to confirm that the local apic timer is trustworthy in C2
state. This keeps the default behaviour on the safe side.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-23 10:21:02 -07:00
Linus Torvalds
296d93cd02 Revert "ACPI: Only use IPI on known broken machines (AMD, Dothan/BaniasPentium M)"
This reverts commit 25496caec1, which
broke bootup on at least Ingo's ThinkPad T60.  Need to figure out
exactly what is wrong before we can re-do the logic.

Requested-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-23 08:03:47 -07:00
Len Brown
439a888885 ACPI: sbs: remove i2c_ec.[ch]
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-22 01:21:05 -04:00
Vladimir Lebedev
722062334b ACPI: sbs: Common interface with CM battery
The SBS driver has tne features as CM battery:
SBS update_time variable has tne same definition as CM battery 'update_time' variable.

Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-22 01:15:58 -04:00
Vladimir Lebedev
6845118b3b ACPI: sbs: Debug messages correction/improvement
Debug messages correction/improvement:
Use ACPI_EXCEPTION instead of ACPI_DEBUG_PRINT.

Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-22 01:15:58 -04:00
Vladimir Lebedev
84cb559872 ACPI: sbs: remove I2C Makefile hooks
SBS does not depend on I2C.
i2c_ec.h and i2c_ec.c are not needed

Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-22 01:15:58 -04:00
Vladimir Lebedev
b4150fc4ae ACPI: sbs: remove I2C Kconfig dependency
SBS does not depend on I2C.

Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-22 01:15:57 -04:00
Vladimir Lebedev
6d15702cc0 ACPI: sbs: use EC rather than I2C
SBS is based on EC function(ec_read/ec_write).
Not needed using of I2C structures/functions ... is removed.
SBS does not depend on I2C now.

Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-22 01:15:57 -04:00
Len Brown
cddece4bec Pull c2 into release branch 2007-03-20 11:06:37 -04:00
Len Brown
b25e84425e Pull bugzilla-7465 into release branch 2007-03-20 11:06:18 -04:00
Len Brown
f5ea908c8f Pull bugzilla-8171 into release branch 2007-03-20 11:06:00 -04:00
Len Brown
54b8c39fbd Pull misc-for-upstream into release branch 2007-03-20 11:05:41 -04:00
Thomas Renninger
25496caec1 ACPI: Only use IPI on known broken machines (AMD, Dothan/BaniasPentium M)
Use IPI for blacklisted CPUs, add parameter IPI vs LAPIC

Currently, Linux disables lapic timer for all machines with C2 and higher
C-state support.

According to Intel only specific Intel models (Banias/Dothan) are broken
in respect of not waking up from C2 with lapic.

However, I am not sure about the naming of the parameter and how it
could/should get integrated into the dyntick part
(CONFIG_GENERIC_CLOCKEVENTS). There, a more fine grained check (TSC
still running?, ..) is needed? Does this make sense (always use
CLOCK_EVT_NOTIFY_BROADCAST_ON, but use OFF if forced by use_ipi=0:
clockevents_notify(use_ipi ? CLOCK_EVT_NOTIFY_BROADCAST_ON :
CLOCK_EVT_NOTIFY_BROADCAST_OFF, &pr->id);

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-17 00:50:46 -04:00
Henrique de Moraes Holschuh
96e89afe6d ACPI: ibm-acpi: allow module to load when acpi notifiers can't be set (v2)
This patch allows for ibm-acpi to coexist (with diminished functionality) with
other drivers like ACPI_BAY.  ibm-acpi will simply disable the functions it is
not able to register ACPI notifiers for.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Chris Wedgwood <cw@f00f.org>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-16 01:07:18 -04:00
Len Brown
09fe58356d ACPI: parse 2nd MADT by default
http://bugzilla.kernel.org/show_bug.cgi?id=7465

Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-15 04:22:18 -04:00
Len Brown
a8f4af6dc6 ACPICA: revert "acpi_serialize" changes
This reverts 977a6226fe
and reverts 1ba753acb3
and updates acpi_ev_queue_notify_request()
to restore the previous implementation of the
"acpi_serialize" workaround.

http://bugzilla.kernel.org/show_bug.cgi?id=8171

Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-15 04:10:36 -04:00
Al Viro
89952d133d [PATCH] misc NULL noise
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-14 15:27:49 -07:00
Alexey Starikovskiy
1d99967bad ACPI: resolve HP nx6125 S3 immediate wakeup regression
Moving disable GPEs from enter_sleep up into sleep_prepare fixed
the disabled SCI on S4 on Acer laptops.

However, it caused an immediate S3 resume on the HP nx6125.
Apparently, on the HP, a GPE was getting re-enabled after
the prepare, but before the enter.

Close that window by restoring the GPE disable on enter.
This is redundant in most cases, but closes this window,
where S3 and S4 paths differ.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Ray Lee <ray-lk@madrabbit.org>
2007-03-12 14:49:26 -04:00
Len Brown
a1fdcc0d27 ACPI: Add support to parse 2nd MADT
When a BIOS bug presents multiple APIC/MADTs,
Linux currently uses the 1st and ignores the 2nd.

But some machines work better if we use the 2nd.

http://bugzilla.kernel.org/show_bug.cgi?id=7465

Add a warning and boot parameter "acpi_apic_instance=2"
to allow parsing the 2nd.

No change to default behaviour in this patch.

Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-11 03:30:13 -04:00
Alexey Starikovskiy
9fd9f8e8bd ACPI: EC: Block queries until EC is fully initialized
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:29 -05:00
Alexey Starikovskiy
01f2246269 ACPI: EC: Cleanup of EC initialization
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:29 -05:00
Alexey Starikovskiy
d033879c98 ACPI: EC: first_ec is better to be acpi_ec than acpi_device.
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
d66d969df8 ACPI: EC: Rename ec_ecdt to more informative boot_ec
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
c0900c3512 ACPI: EC: Clean ECDT and namespace parsing.
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
e828432104 ACPI: EC: Put install handlers into separate function.
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
3d02b90be2 ACPI: EC: Remove casts to/from void* from ec.c
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
c45aac43fe ACPI: EC: enable burst functionality in EC.
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
33c7a0738c ACPI: EC: "Fake ECDT" workaround is not needed any longer.
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
33d20b6100 ACPI: EC: Make EC to initialize first in ACPI
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:28 -05:00
Alexey Starikovskiy
a5f8dee2d3 ACPI: EC: Don't use Global Lock if not asked to do so
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:27:27 -05:00
Len Brown
63e34ca93a Pull misc-for-upstream into release branch 2007-03-09 23:19:50 -05:00
Len Brown
51e7fff1c2 Pull bugzilla-8110 into release branch 2007-03-09 23:19:25 -05:00
Len Brown
bdf3aaf951 Pull bugzilla-8066 into release branch 2007-03-09 23:19:19 -05:00
Len Brown
cb2ebc59ff Pull bugzilla-7570 into release branch 2007-03-09 23:18:46 -05:00
Len Brown
3dfb737998 Pull bugzilla-6859 into release branch 2007-03-09 23:18:35 -05:00
Len Brown
5cb69bcace Pull ibm into release branch 2007-03-09 23:17:46 -05:00
Alexey Starikovskiy
9e19721960 ACPI: ec: fix race in status register access
Delay the read of the EC status register until
after the event that caused it occurs -- otherwise
it is possible to read and act on stale status that was
associated with the previous event.

Do this with a perpetually incrementing "event_count" to detect
when a new event occurs and it is safe to read status.

There is no workaround for polling mode -- it is inherently
exposed to reading and acting on stale status, since it
doesn't have an interrupt to tell it the event completed.

http://bugzilla.kernel.org/show_bug.cgi?id=8110

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 23:16:23 -05:00
Robert P. J. Day
9327f46ee2 ACPI: Kconfig: hide ACPI menu when CONFIG_PM=n
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 22:18:04 -05:00
Ilya A. Volynets-Evenbakh
ac122bb64b ACPI: dock: add access to ACPI docking station UID
It is useful to know whether your laptop is docked or not,
but it is even more useful to know which docking station it's
docked to. Attached patch adds "uid" file to sysfs.
Tested on Dell Latitude D600 with D/Dock.
Patch is against official 2.6.20 release.

Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 21:40:23 -05:00
Julius Volz
98fb8fe10f ACPI: video: Fix spelling and grammar mistakes
Correct some of the most obvious spelling and grammar
mistakes in drivers/acpi/video.c (comments and printk output).

Signed-off-by: Julius Volz <juliusrv@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 21:37:07 -05:00
Anthony Godshall, Ampro Computers, Inc
5b27b176da ACPI: make blacklist more verbose
IMHO, ACPI disabled due to DMI failure or blacklisted year should be noted,
as is done with other ACPI blacklisting.

This will help people troubleshoot when ACPI isn't working.  Status quo is
a mysterious "ACPI Disabled" message without explanation on BIOS that
implements ACPI but not DMI.  This is actually fairly common on embedded
x86 boards.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-09 21:19:05 -05:00
Henrique de Moraes Holschuh
c9bf296b64 ACPI: ibm-acpi: improve backlight power handling
Improve the backlight code to emulate as much as possible the power
management events, as we are unable to really power on or power off the
backlight.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-08 20:24:57 -05:00
Shaohua Li
2f894ef9c8 ACPI: fix boot hang w/o "noapic" on MSI MS-6390-L
This is a workaround to handle a BIOS bug where the
programmer exchanged the name and index fields of
a _PRT entry.  Apparently this BIOS error does not
confuse Windows and thus it lurks in the field
on various machines.

boot with "acpi=strict" to disable this workaround

http://bugzilla.kernel.org/show_bug.cgi?id=6859

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-08 03:42:42 -05:00
Konstantin Karasyov
ff24ba74b6 ACPI: ThinkPad Z60m: usb mouse stops working after suspend to RAM
(http://www.mail-archive.com/linux-acpi@vger.kernel.org/msg05270.html):

References : http://lkml.org/lkml/2007/2/21/413
             http://lkml.org/lkml/2007/2/28/172
Submitter  : Arkadiusz Miskiewicz <arekm@maven.pl>
Caused-By  : Konstantin Karasyov <konstantin.a.karasyov@intel.com>
             commit 0a6139027f

Do not disable power resources on resume even if there are no devices referencing it.

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-07 03:50:11 -05:00
Alexey Starikovskiy
610a3d0696 ACPICA: Fix ACPI Global Lock re-entrancy
patch "Delete recursive feature of ACPI Global Lock"
broke re-entrancy of the Global Lock.
The common routine to acquire GL is acpi_ev_acquire_global_lock,
so check for re-entrancy _must_ be there, and not anywhere else.

http://bugzilla.kernel.org/show_bug.cgi?id=8066#c9

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-07 00:57:30 -05:00
Kristen Carlson Accardi
b1a316f6f9 [PATCH] ACPI: make bay depend on dock
Since the bay driver depends on the dock driver for proper notification,
make this driver depend on the dock driver.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Acked-by: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:38 -08:00
Henrique de Moraes Holschuh
2bc808a8c4 ACPI: ibm-acpi: make ibm-acpi bay support optional
Make ibm-acpi bay support optional at kernel compile time.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
2007-02-22 16:09:25 -02:00
Henrique de Moraes Holschuh
adb005818b ACPI: ibm-acpi: fix initial status of backlight device
The brightness class core does not update the initial status of the
device's brightness at register time.  Do it by ourselves.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
2007-02-22 16:09:25 -02:00
Konstantin Karasyov
7292576043 ACPI: fix S3 fan resume issue
http://bugzilla.kernel.org/show_bug.cgi?id=7570#c14

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-21 02:05:58 -05:00
Richard Purdie
599a52d126 backlight: Separate backlight properties from backlight ops pointers
Per device data such as brightness belongs to the indivdual device
and should therefore be separate from the the backlight operation
function pointers. This patch splits the two types of data and
allows simplifcation of some code.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
2007-02-20 09:26:53 +00:00
Richard Purdie
dfcba20067 backlight: Remove unneeded owner field
Remove uneeded owner field from backlight_properties structure.

Nothing uses it and it is unlikely that it will ever be used. The
backlight class uses other means to ensure that nothing references
unloaded code.

Based on a patch from Dmitry Torokhov <dtor@insightbb.com>

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
2007-02-20 08:37:40 +00:00
Len Brown
255f0385c8 Pull bugzilla-7897 into release branch 2007-02-16 22:12:04 -05:00
Len Brown
902b236c08 Pull bugzilla-7887 into release branch 2007-02-16 22:11:57 -05:00
Len Brown
08e4a10ec8 Pull bugzilla-7570 into release branch 2007-02-16 22:11:50 -05:00
Len Brown
4559b43822 Pull bugzilla-7200 into release branch 2007-02-16 22:11:37 -05:00
Len Brown
1004879f25 Pull bugzilla-7122 into release branch 2007-02-16 22:11:31 -05:00
Len Brown
f0e5ed7f32 Pull bugzilla-5534 into release branch 2007-02-16 22:11:21 -05:00
Len Brown
8800c0ebf5 Pull remove-hotkey into release branch 2007-02-16 22:11:02 -05:00
Len Brown
c0cd79d114 Pull fluff into release branch
Conflicts:

	arch/x86_64/pci/mmconfig.c
	drivers/acpi/bay.c

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 22:10:32 -05:00
Len Brown
5ee6edbcde ACPI: hotkey: remove driver, per feature-removal-schedule.txt
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 21:45:57 -05:00
Len Brown
81450b73dd Pull misc-for-upstream into release branch
Conflicts:

	drivers/usb/misc/appledisplay.c

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 18:52:41 -05:00
Henrique de Moraes Holschuh
0539771d72 ACPI: bay: use IS_ERR for return of register_platform_device_simple
register_platform_device_simple returns ERR_PTR(foo), so test it with
IS_ERR(foo).

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 18:35:23 -05:00
John Keller
ecb5f7521a ACPI: acpi_unload_table_id() always returns error
acpi_unload_table_id() is always returning an error status.
Also, once the matching table is found, don't bother looking
for another match.

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 18:34:40 -05:00
Alexey Starikovskiy
c24e912b61 ACPI: ec: add unlock in error path
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 12:51:53 -05:00
Thomas Gleixner
e9e2cdb412 [PATCH] clockevents: i386 drivers
Add clockevent drivers for i386: lapic (local) and PIT/HPET (global).  Update
the timer IRQ to call into the PIT/HPET driver's event handler and the
lapic-timer IRQ to call into the lapic clockevent driver.  The assignement of
timer functionality is delegated to the core framework code and replaces the
compile and runtime evalution in do_timer_interrupt_hook()

Use the clockevents broadcast support and implement the lapic_broadcast
function for ACPI.

No changes to existing functionality.

[ kdump fix from Vivek Goyal <vgoyal@in.ibm.com> ]
[ fixes based on review feedback from Arjan van de Ven <arjan@infradead.org> ]
Cleanups-from: Adrian Bunk <bunk@stusta.de>
Build-fixes-from: Andrew Morton <akpm@osdl.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:13:59 -08:00
Thomas Gleixner
169a0abbe3 [PATCH] ACPI keep track of timer broadcasting
This is a preperatory patch for highres/dyntick:

- replace the big #ifdef ARCH_APICTIMER_STOPS_ON_C3 hackery by functions

- remove the double switch in the power verify function (in the worst case
  we switched ipi to apic and 20usec later apic to ipi)

- keep track of the the state which stops local APIC timer

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Len Brown <len.brown@intel.com>
Cc: <linux-acpi@vger.kernel.org>
Cc: Andi Kleen <ak@suse.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:13:58 -08:00
Thomas Gleixner
3434933b17 [PATCH] ACPI: fix missing include for UP
apic.h does not get included on UP compiles.  That way the
APICTIMER_STOPS_ON_C3 is not there and UP boxen have no support for timer
broadcasting.  This was never noticed, because the lapic timer is only used
for profiling on UP.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:13:58 -08:00
Konstantin Karasyov
b1028c545c ACPI: fix fan after resume from S3
http://bugzilla.kernel.org/show_bug.cgi?id=7570

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 02:23:07 -05:00
Len Brown
e8363f3327 ACPI: update acpi_power_resume() per new acpi_op_resume
drivers/acpi/power.c:69: warning: initialization from incompatible pointer type

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 02:05:39 -05:00
Konstantin Karasyov
0a6139027f ACPI: Thermal issues on HP nx6325
The previous reference counting scheme to enable power resources
got confused when multiple devices were present that might
repeatedly enable or disable the resource and throw off the count.

The new code simply lists the referencing devices which
are requesting the resource to be enabled.  When there are none,
then it is off.

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 01:47:06 -05:00
Sanjoy Mahajan
636cedf9df ACPI: thermal: fix units in debug output
http://bugzilla.kernel.org/show_bug.cgi?id=4972

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16 01:24:43 -05:00
Thomas Gleixner
5c95d3f578 ACPI: include apic.h in processor driver for benefit of UP kernels
apic.h does not get included on UP compiles.  That way the
APICTIMER_STOPS_ON_C3 is not there and UP boxen have no support for timer
broadcasting.  This was never noticed, because the lapic timer is only used
for profiling on UP.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15 23:27:13 -05:00
Len Brown
8d4956c201 ACPI: remove non-PNPACPI version of get_rtc_dev()
It isn't needed in ACPI code anymore because
now ACPI always includes PNPACPI.

Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15 22:46:42 -05:00
Len Brown
243b66e76a ACPI: always enable CONFIG_PNPACPI on CONFIG_ACPI kernels
We removed the ACPI motherboard driver which handled
the ACPI=y, PNP=n case, so now we need to enforce that
PNP & PNPACPI are always enabled for ACPI kernels.

Most major distros ship this way this already.

Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15 22:38:04 -05:00
Len Brown
fc955f670c ACPI: remove acpi_os_readable(), acpi_os_writable()
...which are now unused

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15 22:19:17 -05:00
Randy Dunlap
70c0846e43 ACPI: Fix sparse warnings
Use NULL for pointers

drivers/acpi/osl.c:208:10: warning: Using plain integer as NULL pointer
drivers/acpi/tables/tbxface.c:411:49: warning: Using plain integer as NULL pointer
drivers/acpi/processor_core.c:1008:10: warning: Using plain integer as NULL pointer

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15 22:19:07 -05:00
Alexey Starikovskiy
5f7748cf91 Execute AML Notify() requests on stack.
HP nx6125/nx6325/... machines have a _GPE handler with an infinite
loop sending Notify() events to different ACPI subsystems.

The notify handler in the ACPI thermal driver is a C-routine,
which may invoke the ACPI interpreter again to get access
to some ACPI variables such as temperature.  (acpi_evaluate_xxx)
On these HP machines such an evaluation changes state of an ASL variable
and lets the loop above break.

In the current ACPI implementation, Notify requests are being deferred
to the same kacpid workqueue on which the above GPE handler with
infinite loop is executing. Thus we have a deadlock -- loop will
continue to spin, sending notify events, and at the same time
preventing these notify events from being run on a workqueue. All
notify events are deferred, thus we see explosion in memory consumption.

Also as GPE handling is blocked, machines overheat because ACPI-based
fan control is stalled.  Eventually by external poll of the same
acpi_evaluate, kacpid is released and all the queued notify events are
free to run, thus 100% CPU utilization by kacpid for several seconds
or more.

To prevent this failure,  Linux must not send notify events to the
kacpid workqueue -- either executing them immediately or putting them
on some other thread.

The first attempt to create a new thread was done by Peter Wainwright
He created a bunch of threads, which were stealing work from a kacpid
workqueue.
This patch appeared in 2.6.15-based kernel shipped with Ubuntu 6.06 LTS.

Second attempt was done by Alexey Starikovskiy, who created a new thread
for each Notify event. This worked OK on HP nx machines,
but broke Linus' Compaq n620c, by producing threads with a speed what
they stopped the machine completely.
Thus this patch was reverted from 2.6.18-rc2.

Alexey re-made the patch to create second workqueue just for notify events,
thus hopping it will not break Linus' machine. Patch was tested on the
same HP nx machines in  and , but this broke Linus' machine
also and was reverted from 2.6.19-rc with much fanfair.

The 4th patch inserted schedule_timeout(1) into deferred
execution of kacpid, if we had any notify requests pending, but Linus
decided that it was too complex (involved either changes to workqueue
to see if it's empty or atomic inc/dec).  Then a 5th attempt did a
yield() to every GPE execution.

Finally, this 6th generation patch simply executes the notify handler
on the stack.  Previous attempts to do this simple solution failed
because of issues in AML mutex re-entrancy which are now fixed
by the previous patch in this series.

http://bugzilla.kernel.org/show_bug.cgi?id=5534

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15 16:13:51 -05:00
Alexey Starikovskiy
c0d127b569 ACPICA: fix AML mutex re-entrancy
ACPI AML supports "serialized" methods which are protected
by an implicit mutex.  The mutex is re-entrant for that AML thread
to allow recursion.

However, Linux implements notify() by creating a new AML thread.
So for systems where notify() re-enters a serialized method,
deadlock results.

The fix is to use the Linux thread_id as the key to allowing
re-entrancy, not the AML thread pointer.

http://bugzilla.kernel.org/show_bug.cgi?id=5534

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15 16:13:16 -05:00