Commit Graph

1838 Commits

Author SHA1 Message Date
Matthew Garrett
a68823ee52 ACPI: Clear WAK_STS on resume
The leading other brand OS appears to clear the WAK_STS flag on resume.
When rebooted, certain BIOSes assume that the system is actually
resuming if it's still set and so fail to reboot correctly. Make sure
that it's cleared at resume time.

Comment clarified as suggested by Bob Moore

http://bugzilla.kernel.org/show_bug.cgi?id=11634

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Tested-by: Romano Giannetti <romano.giannetti@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-16 14:17:06 -04:00
Bjorn Helgaas
a474aaedac rtc-cmos: move wake setup from ACPI glue into RTC driver
Move rtc_wake_setup() from drivers/acpi/glue.c into the RTC driver
in drivers/rtc/rtc-cmos.c.

This removes the ordering constraint between the module_init(acpi_rtc_init)
and the cmos_do_probe() code that depends on it.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-14 16:08:21 -07:00
Linus Torvalds
fffdedef69 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  net/mac80211/rx.c: fix build error
  acpi: Make ACPI_TOSHIBA depend on INPUT.
  net/bfin_mac.c MDIO namespace fixes
  jme: remove unused #include <version.h>
  netfilter: remove unused #include <version.h>
  net: Fix off-by-one in skb_dma_map
  smc911x: Add support for LAN921{5,7,8} chips from SMSC
  qlge: remove duplicated #include
  wireless: remove duplicated #include
  net/au1000_eth.c MDIO namespace fixes
  net/tc35815.c: fix compilation
  sky2: Fix WOL regression
  r8169: NULL pointer dereference on r8169 load
2008-10-13 10:08:08 -07:00
David S. Miller
4bb03849ae acpi: Make ACPI_TOSHIBA depend on INPUT.
Selecting INPUT_POLLDEV is not sufficient.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-12 21:22:31 -07:00
Linus Torvalds
1efd325fba Fix RTC wakealarm sysfs interface breakage.
Commit ed458df4d2 ("PnP: move
pnpacpi/pnpbios_init to after PCI init") moved the PnP RTC discovery
later, and now the ACPI RTC glue code doesn't find it any more, breaking
the RTC wakealarm sysfs interfaces, as reported by Rafael.

This really is fairly messy, and we have several annoying ordering
constraints here - the PnP code that sets up the RTC resources wants to
run after the PCI resources have to be registered, which in turn needs
to run after ACPI has at least enumerated the root PCI buses etc.  Our
initcall ordering is not fine-grained enough to make this all painless.

So this moves the ACPI RTC glue ("acpi_rtc_init()") down to a regular
module call, which fixes the problem Rafael has.  The reason this isn't
wonderful is that we really should do acpi_rtc_init before we do the
rtc_cmos init, and now those two are in the same module_init() section.

Which happens to work, but only because drivers/rtc is linked after
drivers/acpi.  In other words, we still have a very subtle ordering
issue here. Grr.

Reported-and-tested-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-12 11:30:08 -07:00
Matthew Wilcox
27663c5855 ACPI: Change acpi_evaluate_integer to support 64-bit on 32-bit kernels
As of version 2.0, ACPI can return 64-bit integers.  The current
acpi_evaluate_integer only supports 64-bit integers on 64-bit platforms.
Change the argument to take a pointer to an acpi_integer so we support
64-bit integers on all platforms.

lenb: replaced use of "acpi_integer" with "unsigned long long"
lenb: fixed bug in acpi_thermal_trips_update()

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-11 02:47:33 -04:00
Zhao Yakui
455c8793d2 ACPI: Enable EC device immediately after ACPI full initialization
when there is no ECDT table and no _INI object for EC device, it will be
enabled before scanning ACPI device. But it is too late after the following
the commit is merged.
    >commit 7752d5cfe3
    > Author: Robert Hancock <hancockr@shaw.ca>
    > Date:   Fri Feb 15 01:27:20 2008 -0800
       >x86: validate against acpi motherboard resources

   After the above commit is merged, OS will check whether MCFG area is
reserved in ACPI motherboard resources by calling the function of
acpi_get_devices when there exists MCFG table. In the acpi_get_devices the _STA
object will be evaluated to check the status of the ACPI device. On some broken
BIOS the MYEC object of EC device is initialized as one, which indicates that
EC operation region is already accessible before enabling EC device.So on these
broken BIOS the EC operation region will be accessed in course of evaluating
the _STA object before enabling EC device, which causes that OS will print the
following warning messages:
    >ACPI Error (evregion-0315): No handler for Region [EC__] (ffff88007f8145e8)
[EmbeddedControl] [20080609]
    >ACPI Error (exfldio-0290): Region EmbeddedControl(3) has no handler [20080321]
    >ACPI Error (psparse-0530): Method parse/execution failed [\_SB_.PCI0.SBRG.
         EC__.BAT1._STA] (Node ffff81013fc17a00), AE_NOT_EXIST
    >ACPI Error (uteval-0233): Method execution failed [\_SB_.PCI0.SBRG.EC__.BAT1.
         _STA] (Node ffff81013fc17a00), AE_NOT_EXIST

Although the above warning message is harmless, it looks confusing.
So it is necessary to enable EC device as early as possible.Maybe it is
appropriate to enable it immediately after ACPI full initialization.

http://bugzilla.kernel.org/show_bug.cgi?id=11255
http://bugzilla.kernel.org/show_bug.cgi?id=11374
http://bugzilla.kernel.org/show_bug.cgi?id=11660

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-11 02:00:02 -04:00
Thomas Renninger
0a918a9432 Subject: ACPI dock: Use ACPI_EXCEPTION instead of printk(KERN_ERR
lenb: stripped patch down to what still applied to new dock.c

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-11 00:15:04 -04:00
Randy Dunlap
b3cef8f6eb toshiba_acpi: depends on INPUT
CONFIG_ACPI_TOSHIBA can =y when CONFIG_INPUT=m, so prevent that
combination and its subsequent build errors:

toshiba_acpi.c:(.text+0x3e877): undefined reference to `input_event'
toshiba_acpi.c:(.text+0x3e98a): undefined reference to `input_unregister_polled_device'
toshiba_acpi.c:(.text+0x3e994): undefined reference to `input_free_polled_device'
toshiba_acpi.c:(.init.text+0x21b4): undefined reference to `input_allocate_polled_device'
toshiba_acpi.c:(.init.text+0x2263): undefined reference to `input_register_polled_device'
make[1]: *** [.tmp_vmlinux1] Error 1

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-10 18:05:54 -04:00
Pavel Machek
db89b4f0db ACPI: catch calls of acpi_driver_data on pointer of wrong type
Catch attempts to use of acpi_driver_data on pointers of wrong type.

akpm: rewritten to use proper C typechecking and remove the
"function"-used-as-lvalue thing.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-10 18:05:53 -04:00
Harvey Harrison
9e113e0014 ACPI: toshiba_acpi.c fix sparse signedness mismatch warnings
set_bit expects unsigned int, and we start with a u32 anyway.
drivers/acpi/toshiba_acpi.c:397:14: warning: incorrect type in argument 1 (different signedness)
drivers/acpi/toshiba_acpi.c:397:14:    expected unsigned int [usertype] *word
drivers/acpi/toshiba_acpi.c:397:14:    got int *<noident>
drivers/acpi/toshiba_acpi.c:399:14: warning: incorrect type in argument 1 (different signedness)
drivers/acpi/toshiba_acpi.c:399:14:    expected unsigned int [usertype] *word
drivers/acpi/toshiba_acpi.c:399:14:    got int *<noident>
drivers/acpi/toshiba_acpi.c:401:14: warning: incorrect type in argument 1 (different signedness)
drivers/acpi/toshiba_acpi.c:401:14:    expected unsigned int [usertype] *word
drivers/acpi/toshiba_acpi.c:401:14:    got int *<noident>

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-10 18:05:53 -04:00
Alexey Starikovskiy
4b5fcb353b ACPI: acpi_driver_data could only be applied to acpi_device
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
CC: Hannes Reinecke <hare@suse.de>

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-10 18:05:52 -04:00
Jan Beulich
fcea94ba07 ACPI: fix FADT parsing
The (1.0 inherited) separate length fields in the FADT are byte granular.
Further, PM1a/b may have distinct lengths (if using the v2 fields was
okay) and may live in distinct address spaces.  acpi_tb_convert_fadt()
should account for all of these conditions.

Apart from these changes I'm puzzled by the fact that, not just for
acpi_gbl_xpm1{a,b}_enable, acpi_hw_low_level_{read,write}() get an
explicit size passed rather than using the size found in the passed GAS.
What happens on a platform that defines PM1{a,b} wider than 16 bits?  Of
course, acpi_hw_low_level_{read,write}() at present are entirely
un-prepared to deal with sizes other than 8, 16, or 32, not to speak of a
non-zero bit_offset or access_width...

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-10 15:31:48 -04:00
David S. Miller
4dd565134e Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/e1000e/ich8lan.c
	drivers/net/e1000e/netdev.c
2008-10-08 14:56:41 -07:00
Matthew Garrett
a66bfa7a47 ACPI: WMI: Enable event methods when registering notifiers
According to the ACPI-WMI spec, event blocks may provide a function call
for enabling/disabling them. This patch adds support for making these
calls when registering or removing notifications. Without this, my Dell
firmware provides no data in the event notification.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-08 16:56:41 -04:00
Zhang Rui
faee816b15 ACPI: don't enable control method power button as wakeup device when Fixed Power button is used
don't enable control method power button as wakeup device
when Fixed Power button is used.

http://bugzilla.kernel.org/show_bug.cgi?id=10503

Tested-by: walken@zoy.org <walken@zoy.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-06 22:31:11 -04:00
Rafael J. Wysocki
76acae04c8 ACPI: Make /proc/acpi/wakeup interface handle PCI devices (again)
Make the ACPI /proc/acpi/wakeup interface set the appropriate wake-up bits
of physical devices corresponding to the ACPI devices and make those bits
be set initially for devices that are enabled to wake up by default.  This
is needed to restore the 2.6.26 and earlier behavior for the PCI devices
that were previously handled correctly with the help of the
/proc/acpi/wakeup interface.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-03 18:22:19 -07:00
Alexey Starikovskiy
8463200a00 ACPI: EC: Rename some variables
No functional changes.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Rafael J. Wysocki <rjw@suse.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-29 13:36:44 -04:00
Alexey Starikovskiy
7c6db4e050 ACPI: EC: do transaction from interrupt context
It is easier and faster to do transaction directly from interrupt context
rather than waking control thread.
Also, cleaner GPE storm avoidance is implemented.
References: 	http://bugzilla.kernel.org/show_bug.cgi?id=9998
		http://bugzilla.kernel.org/show_bug.cgi?id=10724
		http://bugzilla.kernel.org/show_bug.cgi?id=10919
		http://bugzilla.kernel.org/show_bug.cgi?id=11309
		http://bugzilla.kernel.org/show_bug.cgi?id=11549
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-25 16:23:03 -04:00
Shaohua Li
8652b00fd6 dock: add 'type' sysfs file
add a sysfs file to present dock type. Suggested by Holger.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:48:59 -04:00
Shaohua Li
61b8369583 dock: fix for ATA bay in a dock station
an ATA bay can be in a dock and itself can be ejected separately.
This patch handles such eject bay. Found by Holger.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:48:52 -04:00
Shaohua Li
4be9309d15 bay: remove driver, all functions now handled by dock driver
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:48:32 -04:00
Shaohua Li
1253f7aabf dock: introduce .uevent for devices in dock, eg libata
dock's uevent reported itself, not ata. It might be difficult to find an
ata device just according to a dock. This patch introduces docking ops
for each device in a dock. when docking, dock driver can send device
specific uevent. This should help dock station too (not just bay)

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:23:00 -04:00
Shaohua Li
f730ae1838 libata: remove functions now handed by ACPI dock driver
dock driver can handle ata(bay) hotplug now. dock driver already handles
_EJ0 and _STA, so remove them. Also libata doesn't need register
notification handler anymore.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:16:41 -04:00
Zhang Rui
19cd847ab2 ACPI: fix hotplug race
The hotplug notification handler and drivers' notification handler all
run in one workqueue.  Before hotplug removes an acpi device, the
device driver's notification handler is already be recorded to run just
after global notification handler.  After hotplug notification handler
runs, acpica will notice a NULL notification handler and crash.

So now we run run hotplug in another workqueue and wait
for all acpi notication handlers finish.
This was found in battery hotplug, but actually all
hotplug can be affected.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:12:38 -04:00
Shaohua Li
6bd00a61ab ACPI: introduce notifier change to avoid duplicates
The battery driver already registers notification handler.
To avoid registering notification handler again,
introduce a notifier chain in global system notifier handler
and use it in dock driver.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:04:43 -04:00
Shaohua Li
db350b084d dock: add bay and battery hotplug support
Make the dock driver support bay and battery hotplug.
They are all regarded as dock, so handling can be unified.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:01:29 -04:00
Shaohua Li
406f692d08 dock: add _LCK support
support _LCK method, which is a optional method for hotplug

lenb: we have not seen _LCK used in the field yet

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 22:59:29 -04:00
Shaohua Li
82545394e0 dock: fix eject request process (2.6.27-rc1 regression)
commit 2a7feab28d3fc060d320eaba192e49dad1079b7e introduces a bug.
My thinkpad actually will send an eject_request and we should follow the
eject process to finish the eject, otherwise system still thinks the bay
is present.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 22:57:19 -04:00
Shaohua Li
8b59560a3b ACPI: dock: avoid check _STA method
In some BIOSes, every _STA method call will send a notification again,
this cause freeze. And in some BIOSes, it appears _STA should be called
after _DCK. This tries to avoid calls _STA, and still keep the device
present check.

http://bugzilla.kernel.org/show_bug.cgi?id=10431

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 22:54:39 -04:00
Thomas Renninger
910dfae298 ACPI: cpufreq, processor: Detect old BIOS, not supporting CPU freq on a recent CPU.
On Intel CPUs it is rather common and a good hint that BIOSes which do provide
_PPC func, but not the frequencies itself in _PSS function, are old and need
to be updated for CPU freq support.

Tell the user/vendor he has a BIOS/firmware problem.
Make use of FW_BUG interface to give vendors and users the ability to
automatically check with (or let linuxfirmwarekit do that):
dmesg |grep "Firmware Bug"

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-22 18:48:07 -04:00
David S. Miller
17dce5dfe3 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	net/mac80211/mlme.c
2008-09-08 16:59:05 -07:00
philipl@overt.org
c41a40c58b toshiba_acpi: Add support for bluetooth toggling through rfkill (v8)
There's been a patch floating around for toshiba_acpi that exports an ad-hoc
/proc interface to toggle the bluetooth adapter in a large number of Toshiba
laptops. I'm not sure if it's still relevant for the latest models, but it is
still required for older models such as my Tecra M3.

This change pulls in the low level Toshiba-specific code from the old patch and
sets up an rfkill device and a polled input device to track the state of the
hardware kill-switch.

Signed-off-by: Philip Langdale <philipl@overt.org>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-09-05 16:17:45 -04:00
Andi Kleen
4fd23436f1 Merge branches 'smbus' and 'fujitsu-fix' into release-2.6.27 2008-09-04 14:33:03 +02:00
Zhao Yakui
266feefeb9 ACPI: Avoid bogus timeout about SMbus check
In the function of wait_transaction_complete when the timeout happens,
OS will try to check the status of SMbus again. If the status is what OS
expected, it will be regarded as the bogus timeout. Otherwise it will be
treated as ETIME.

http://bugzilla.kernel.org/show_bug.cgi?id=10483

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
tested-by    : Oldřich Jedlička < <oldium.pro@seznam.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-09-04 14:32:28 +02:00
Andi Kleen
f54538c3a0 Merge branch 'acpica-release-fixes' into release-2.6.27 2008-08-21 08:46:25 +02:00
Cyrill Gorcunov
f0df2d6b52 acpi: add checking for NULL early param
The early_param handling function could recieve NULL pointer as argument
in case if user didn't enter parameter value.  So we have to be ready for
a such situation and do check for NULL pointer if needed.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-21 08:45:39 +02:00
Andi Kleen
f3853863b0 Merge branch 'compal-fix' into release-2.6.27 2008-08-21 08:44:21 +02:00
Dennis Jansen
79c4375bf2 ACPI: Fix typo in "Disable MWAIT via DMI on broken Compal board"
This fixes a typo in commit 2a2a64714d
"Disable MWAIT via DMI on broken Compal board".

It allows the nomwait dmi check to actually detect the Acer 5220.

Signed-off-by: Dennis Jansen <dennis.jansen@web.de>
Tested-by: Dennis Jansen <dennis.jansen@web.de>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-21 08:43:21 +02:00
Milan Broz
613e5f3376 ACPI: Fix now signed module parameter.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-18 08:38:36 +02:00
Ming Ling
1371c893ff ACPI: Change package length error to warning
The condition is harmless and no need to scare the user

http://bugzilla.kernel.org/show_bug.cgi?id=11245

Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-18 04:14:59 +02:00
Andi Kleen
0f24562364 Merge branches 'acpica-release-fixes', 'ec-fix', 'dock', 'irq-bounds', 'thermal-fix', 'wmi' and 'acpi-cleanups' into release-2.6.27 2008-08-15 03:30:00 +02:00
Milan Broz
9f497bcc69 ACPI: Fix thermal shutdowns
Do not use unsigned int if there is test for negative number...

See drivers/acpi/processor_perflib.c
  static unsigned int ignore_ppc = -1;
...
  if (event == CPUFREQ_START && ignore_ppc <= 0) {
       ignore_ppc = 0;
...

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 03:29:29 +02:00
Bjorn Helgaas
fa46d35264 ACPI: bounds check IRQ to prevent memory corruption
acpi_penalize_isa_irq() should validate irq before using it to
index the acpi_irq_penalty[] table.

Here's the path I'm concerned about:

    pnpacpi_parse_allocated_irqresource()
    {
	...
	irq = acpi_register_gsi(gsi, triggering, polarity);
	if (irq >= 0)
		pcibios_penalize_isa_irq(irq, 1);

There's no guarantee that acpi_register_gsi() will return an IRQ
within the bounds of acpi_irq_penalty[].

I have not seen a failure I can attribute to this.  However,
ACPI_MAX_IRQS is only 256, and I'm pretty sure ia64 can have
IRQs larger than that.

I think this should go in 2.6.27.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 03:17:07 +02:00
Zhao Yakui
9d699ed92a ACPI: Avoid bogus EC timeout when EC is in Polling mode
When EC is in Polling mode, OS will check the EC status continually by using
the following source code:
       clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
       while (time_before(jiffies, delay)) {
               if (acpi_ec_check_status(ec, event))
       	            return 0;
               msleep(1);
       }
But msleep is realized by the function of schedule_timeout. At the same time
although one process is already waken up by some events, it won't be scheduled
immediately. So maybe there exists the following phenomena:
     a. The current jiffies is already after the predefined jiffies.
	But before timeout happens, OS has no chance to check the EC
	status again.
     b. If preemptible schedule is enabled, maybe preempt schedule will happen
	before checking loop. When the process is resumed again, maybe
	timeout already happens, which means that OS has no chance to check
	the EC status.

In such case maybe EC status is already what OS expects when timeout happens.
But OS has no chance to check the EC status and regards it as AE_TIME.

So it will be more appropriate that OS will try to check the EC status again
when timeout happens. If the EC status is what we expect, it won't be regarded
as timeout. Only when the EC status is not what we expect, it will be regarded
as timeout, which means that EC controller can't give a response in time.

http://bugzilla.kernel.org/show_bug.cgi?id=9823
http://bugzilla.kernel.org/show_bug.cgi?id=11141

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui  <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 03:13:06 +02:00
Zhao Yakui
2500822bf4 ACPI : Add the EC dmi table to fix the incorrect ECDT table
On some ASUS laptops the ECDT gives the incorrect command/status & Data I/O
register address.

AK: it seems like the command/data addresses are exchanged.

In such case it will cause that EC device can't be
initialized correctly.
To add the EC dmi table is to fix this issue. If the laptop falls into the
EC dmi table, the EC command/data I/O address will be fixed.

AK: Add comments describing this better

http://bugzilla.kernel.org/show_bug.cgi?id=9399

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
tested-by    : Jan Kasprzak  <kas@fi.muni.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 03:12:27 +02:00
Holger Macht
afd7301ddb ACPI: Properly clear flags on false-positives and send uevent on sudden unplug
Some devices emit a ACPI_NOTIFY_DEVICE_CHECK while physically unplugging
even if the software undock has already been done and dock_present() check
fails. However, the internal flags need to be cleared (complete_undock()).

Also, even notify userspace if the dock station suddently went away
without proper software undocking.

This happens on a Acer TravelMate 3000

Signed-off-by: Holger Macht <hmacht@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 03:02:42 +02:00
Pavel Machek
d0057413a7 acpi: trivial cleanups
Trivial cleanups for ACPI. Fix misspelling in printk(), fix mismerge,
add file header.

AK: removed file header

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 02:29:06 +02:00
Carlos Corbacho
dab36ad8d5 ACPI: WMI: Set instance for query block calls
Although the necessary data structure was set up, it was never actually
passed in, so data block calls have only been working by sheer chance.

(On Acer laptops. the data block methods we've been calling never look at
the instance value, hence acer-wmi never triggered this before).

f3454ae810 brought this to light.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 02:25:01 +02:00
Bob Moore
3c7db22a19 ACPICA: Additional error checking for pathname utilities
Add error check after all calls to acpi_ns_get_pathname_length.
Add status return from acpi_ns_build_external_path and check after
all calls.  Add parameter validation to acpi_ut_initialize_buffer.

Reported by and initial patch by Ingo Molnar.
http://lkml.org/lkml/2008/7/21/176

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 02:12:16 +02:00
Lin Ming
d3ff268a01 ACPICA: Fix possible memory leak in Unload() operator
The DdbHandle returned by Load() does not have its reference count
decremented during unload, leading to a memory leak. Lin Ming.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 02:11:59 +02:00
Bob Moore
2843ae7734 ACPICA: Fix memory leak when deleting thermal/processor objects
Fixes a possible memory leak when thermal and processor objects
are deleted. Any associated notify handlers (and objects) were
not being deleted. Fiodor Suietov. BZ 506

http://www.acpica.org/bugzilla/show_bug.cgi?id=506

Signed-off-by: Fiodor Suietov <fiodor.f.suietov@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-08-15 02:11:59 +02:00
Niels de Vos
61a2d07d3f Remove newline from the description of module parameters
Some module parameters with only one line have the '\n' at the end of the
description.  This is not needed nor wanted as after the description the
type (i.e.  int) is followed by a newline.

Some modules contain a multi-line description, these are not affected
by this patch.

Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Ed L. Cashin <ecashin@coraid.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Roland Dreier <rolandd@cisco.com>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01 12:46:41 -07:00
Thomas Renninger
9b67c5d48f acpi cpufreq cleanup: move bailing out of function before locking the mutex
Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30 09:41:43 -07:00
Thomas Renninger
a1531acd43 cpufreq acpi: only call _PPC after cpufreq ACPI init funcs got called already
Ingo Molnar provided a fix to not call _PPC at processor driver
initialization time in "[PATCH] ACPI: fix cpufreq regression" (git
commit e4233dec74)

But it can still happen that _PPC is called at processor driver
initialization time.

This patch should make sure that this is not possible anymore.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30 09:41:43 -07:00
Linus Torvalds
1d9b9f6a53 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits)
  x86/PCI: use dev_printk when possible
  PCI: add D3 power state avoidance quirk
  PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot
  PCI: add an option to allow ASPM enabled forcibly
  PCI: disable ASPM on pre-1.1 PCIe devices
  PCI: disable ASPM per ACPI FADT setting
  PCI MSI: Don't disable MSIs if the mask bit isn't supported
  PCI: handle 64-bit resources better on 32-bit machines
  PCI: rewrite PCI BAR reading code
  PCI: document pci_target_state
  PCI hotplug: fix typo in pcie hotplug output
  x86 gart: replace to_pages macro with iommu_num_pages
  x86, AMD IOMMU: replace to_pages macro with iommu_num_pages
  iommu: add iommu_num_pages helper function
  dma-coherent: add documentation to new interfaces
  Cris: convert to using generic dma-coherent mem allocator
  Sh: use generic per-device coherent dma allocator
  ARM: support generic per-device coherent dma mem
  Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVE
  x86: use generic per-device dma coherent allocator
  ...
2008-07-28 18:14:24 -07:00
Matthew Wilcox
362b7077a5 PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot
I get warnings about 'device' possibly being used uninitialised.  While
I can deduce this is not true, it seems that GCC can't.  This patch
changes `check_slot' to return device on success and -1 on error, which
shuts GCC up.

Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-28 15:06:00 -07:00
Ingo Molnar
9e3ee1c39c Merge branch 'linus' into cpus4096
Conflicts:

	kernel/stop_machine.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-28 23:32:00 +02:00
Ingo Molnar
414f746d23 Merge branch 'linus' into cpus4096 2008-07-28 21:14:43 +02:00
Thomas Gleixner
b032bf70df ACPI/CPUIDLE: prevent setting pm_idle to NULL
pm_idle_save resp. pm_idle_old can be NULL when the restore code in
acpi_processor_cst_has_changed() resp. cpuidle_uninstall_idle_handler()
is called. This can set pm_idle unconditinally to NULL, which causes the
kernel to panic when calling pm_idle in the x86 idle code. This was
covered by an extra check for !pm_idle in the x86 idle code, which was
removed during the x86 idle code refactoring.

Instead of restoring the pm_idle check in the x86 code prevent the
acpi/cpuidle code to set pm_idle to NULL.

Reported by: Dhaval Giani http://lkml.org/lkml/2008/7/2/309
Based on a debug patch from Ingo Molnar

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-28 08:31:58 -07:00
Linus Torvalds
a048d3aff8 Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  ftrace: fix modular build
  ftrace: disable tracing on acpi idle calls
  ftrace: remove latency-tracer leftover
  ftrace: only trace preempt off with preempt tracer
  ftrace: fix 4d3702b6 (post-v2.6.26): WARNING: at kernel/lockdep.c:2731 check_flags (ftrace)
2008-07-26 13:25:47 -07:00
Mike Travis
0bc3cc03fa cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu
* Replace previous instances of the cpumask_of_cpu_ptr* macros
    with a the new (lvalue capable) generic cpumask_of_cpu().

Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-26 16:40:33 +02:00
Steven Rostedt
dcf3099745 ftrace: disable tracing on acpi idle calls
The acpi idle waits calls local_irq_save and then uses mwait to go into
idle. The tracer gets reenabled at local_irq_save but does not detect that
the idle allows for wake ups.

This patch adds code to disable the tracing when acpi puts the CPU to idle.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-26 14:42:21 +02:00
Linus Torvalds
1481b9109f Merge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6
* 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6:
  acpi: fix crash in core ACPI code, triggered by CONFIG_ACPI_PCI_SLOT=y
  ACPI: thinkpad-acpi: don't misdetect in get_thinkpad_model_data() on -ENOMEM
  ACPI: thinkpad-acpi: bump up version to 0.21
  ACPI: thinkpad-acpi: add bluetooth and WWAN rfkill support
  ACPI: thinkpad-acpi: WLSW overrides other rfkill switches
  ACPI: thinkpad-acpi: prepare for bluetooth and wwan rfkill support
  ACPI: thinkpad-acpi: consolidate wlsw notification function
  ACPI: thinkpad-acpi: minor refactor on radio switch init
  Revert "ACPI: don't walk tables if ACPI was disabled"
  Revert "dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled."
  Revert "Fix FADT parsing"
  ACPI : Set FAN device to correct state in boot phase
  ACPI: Ignore _BQC object when registering backlight device
  ACPI: stop complaints about interrupt link End Tags and blank IRQ descriptors
2008-07-24 13:57:37 -07:00
Linus Torvalds
5042d99795 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: fixup sparse endianness warnings in proc.c
  PCI PM: make more PCI PM core functionality available to drivers
  PCI/DMAR: don't assume presence of RMRRs
  PCI hotplug: fix error path in pci_slot's register_slot
2008-07-24 13:57:13 -07:00
Carlos Corbacho
e41fb7c58e pm: acpi pm: add DMI quirk list for ACPI 1.0 suspend ordering
There are a few BIOSes that we know of already that need to use the ACPI 1.0
suspend order.  This appears to be only be a small minority of mostly nVidia
based systems.

Based on observation of Windows behaviour, it's clear that Windows is also
doing maintaining its own list of broken hardware that needs this workaround.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:24 -07:00
Shaohua Li
bdfe6b7c68 pm: acpi hibernation: utilize hardware signature
ACPI defines a hardware signature.  BIOS calculates the signature according to
hardware configure and if hardware changes while hibernated, the signature
will change.  In that case, S4 resume should fail.

Still, there may be systems on which this mechanism does not work correctly,
so it is better to provide a workaround for them.  For this reason, add a new
switch to the acpi_sleep= command line argument allowing one to disable
hardware signature checking.

[shaohua.li@intel.com: build fix]
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: <Valdis.Kletnieks@vt.edu>
Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:24 -07:00
Akinobu Mita
e108526e77 move memory_read_from_buffer() from fs.h to string.h
James Bottomley warns that inclusion of linux/fs.h in a low level
driver was always a danger signal.  This patch moves
memory_read_from_buffer() from fs.h to string.h and fixes includes in
existing memory_read_from_buffer() users.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Bob Moore <robert.moore@intel.com>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:13 -07:00
Linus Torvalds
26dcce0fab Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
  NR_CPUS: Replace NR_CPUS in speedstep-centrino.c
  cpumask: Provide a generic set of CPUMASK_ALLOC macros, FIXUP
  NR_CPUS: Replace NR_CPUS in cpufreq userspace routines
  NR_CPUS: Replace per_cpu(..., smp_processor_id()) with __get_cpu_var
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genapic_flat_64.c
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genx2apic_uv_x.c
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/proc.c
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/mcheck/mce_64.c
  cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c, fix
  cpumask: Use optimized CPUMASK_ALLOC macros in the centrino_target
  cpumask: Provide a generic set of CPUMASK_ALLOC macros
  cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c
  cpumask: Optimize cpumask_of_cpu in kernel/time/tick-common.c
  cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c
  cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/ldt.c
  cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/io_apic_64.c
  cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr
  Revert "cpumask: introduce new APIs"
  cpumask: make for_each_cpu_mask a bit smaller
  net: Pass reference to cpumask variable in net/sunrpc/svc.c
  ...

Fix up trivial conflicts in drivers/cpufreq/cpufreq.c manually
2008-07-23 18:37:44 -07:00
Alex Chiang
e4268aad42 PCI hotplug: fix error path in pci_slot's register_slot
Juha Leppnen noticed that an error path in register_slot() wasn't
returning appropriately, leading to a condition where we might access a
kfree'ed pointer, so let's fix that.

Additionally, fix up the copyright information in the file while
we're in there.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-22 11:18:17 -07:00
Greg Kroah-Hartman
fc3a8828b1 driver core: fix a lot of printk usages of bus_id
We have the dev_printk() variants for this kind of thing, use them
instead of directly trying to access the bus_id field of struct device.

This is done in order to remove bus_id entirely.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:53 -07:00
Ingo Molnar
f88133d76e acpi: fix crash in core ACPI code, triggered by CONFIG_ACPI_PCI_SLOT=y
-tip testing found the following boot crash on 32-bit x86 (Core2Duo
laptop) yesterday:

[    5.606664] scsi4 : ata_piix
[    5.606664] scsi5 : ata_piix
[    5.606664] ACPI Error (psargs-0358): [\_SB_.PCI0.LPC_.EC__.BSTA] Namespace lookup failure, AE_NOT_FOUND
[    5.606664] ACPI Error (psparse-0530): ACPI Error (nsnames-0186): Invalid NS Node (f7c0e960) while traversing path [20080609]
[    5.606664] BUG: unable to handle kernel NULL pointer dereference at 0000000f
[    5.606664] IP: [<80339e2f>] acpi_ns_build_external_path+0x1f/0x80
[    5.609997] *pdpt = 0000000000a03001 *pde = 0000000000000000
[    5.609997] Oops: 0002 [#1] SMP
[    5.609997]
[    5.609997] Pid: 1, comm: swapper Not tainted (2.6.26-tip-03965-gbbfb62e-dirty #3153)
[    5.609997] EIP: 0060:[<80339e2f>] EFLAGS: 00010286 CPU: 0
[    5.609997] EIP is at acpi_ns_build_external_path+0x1f/0x80
[    5.609997] EAX: f7c18c18 EBX: ffffffff ECX: 00000010 EDX: 00000000
[    5.609997] ESI: f7c18c18 EDI: 00000010 EBP: f7c4dc28 ESP: f7c4dc18
[    5.609997]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[    5.609997] Process swapper (pid: 1, ti=f7c4c000 task=f7c50000 task.ti=f7c4c000)
[    5.609997] Stack: 00000000 00000000 f7c18c18 f7c4dc48 f7c4dc40 80339ed0 00000000 f7c18c18
[    5.609997]        8084c1b6 8084c1b6 f7c4dc58 8033a60a 00000000 00000010 00000000 f7c18c18
[    5.609997]        f7c4dc70 8033a68f f7c18c18 00000000 f6de7600 00000005 f7c4dc98 8033c34d
[    5.609997] Call Trace:
[    5.609997]  [<80339ed0>] ? acpi_ns_handle_to_pathname+0x40/0x72
[    5.609997]  [<8033a60a>] ? acpi_ns_print_node_pathname+0x2c/0x61
[    5.609997]  [<8033a68f>] ? acpi_ns_report_method_error+0x50/0x6d
[    5.609997]  [<8033c34d>] ? acpi_ps_parse_aml+0x149/0x2f9
[    5.609997]  [<8033d6dd>] ? acpi_ps_execute_method+0x132/0x201
[    5.609997]  [<80339d19>] ? acpi_ns_evaluate+0x1ad/0x258
[    5.609997]  [<803406c4>] ? acpi_ut_evaluate_object+0x55/0x18f
[    5.609997]  [<803408b7>] ? acpi_ut_execute_STA+0x22/0x7a
[    5.609997]  [<8033a907>] ? acpi_get_object_info+0x131/0x1be
[    5.609997]  [<80344bb2>] ? do_acpi_find_child+0x22/0x4b
[    5.609997]  [<8033b855>] ? acpi_ns_walk_namespace+0xa5/0x124
[    5.609997]  [<803394f3>] ? acpi_walk_namespace+0x54/0x74
[    5.609997]  [<80344b90>] ? do_acpi_find_child+0x0/0x4b
[    5.609997]  [<80344b85>] ? acpi_get_child+0x38/0x43
[    5.609997]  [<80344b90>] ? do_acpi_find_child+0x0/0x4b
[    5.609997]  [<804d0148>] ? ata_acpi_associate+0xb5/0x1b5
[    5.609997]  [<804c6ecb>] ? ata_scsi_add_hosts+0x8e/0xdc
[    5.609997]  [<804c40c8>] ? ata_host_register+0x9f/0x1d6
[    5.609997]  [<804cbc7f>] ? ata_pci_sff_activate_host+0x179/0x19f
[    5.609997]  [<804cdd45>] ? ata_sff_interrupt+0x0/0x1c7
[    5.609997]  [<8069b033>] ? piix_init_one+0x569/0x5b0
[    5.609997]  [<801bd400>] ? sysfs_ilookup_test+0x0/0x11
[    5.609997]  [<801987d7>] ? ilookup5_nowait+0x29/0x30
[    5.609997]  [<802efc7e>] ? pci_match_device+0x99/0xa3
[    5.609997]  [<802efd3c>] ? pci_device_probe+0x39/0x59
[    5.609997]  [<803bc4af>] ? driver_probe_device+0xa0/0x11b
[    5.609997]  [<803bc564>] ? __driver_attach+0x3a/0x59
[    5.609997]  [<803bbde3>] ? bus_for_each_dev+0x36/0x58
[    5.609997]  [<803bc354>] ? driver_attach+0x14/0x16
[    5.609997]  [<803bc52a>] ? __driver_attach+0x0/0x59
[    5.609997]  [<803bc161>] ? bus_add_driver+0x93/0x196
[    5.609997]  [<803bc773>] ? driver_register+0x71/0xcd
[    5.609997]  [<802eff05>] ? __pci_register_driver+0x3f/0x6e
[    5.609997]  [<809af7ff>] ? piix_init+0x14/0x24
[    5.609997]  [<80984568>] ? kernel_init+0x128/0x269
[    5.609997]  [<809af7eb>] ? piix_init+0x0/0x24
[    5.609997]  [<802e2758>] ? trace_hardirqs_on_thunk+0xc/0x10
[    5.609997]  [<80116aef>] ? restore_nocheck_notrace+0x0/0xe
[    5.609997]  [<80984440>] ? kernel_init+0x0/0x269
[    5.609997]  [<80984440>] ? kernel_init+0x0/0x269
[    5.609997]  [<80117d87>] ? kernel_thread_helper+0x7/0x10
[    5.609997]  =======================
[    5.609997] Code: 75 02 b3 01 8d 43 01 8b 5d fc c9 c3 55 89 e5 57 89 cf 56 53 89 d3 4b 83 ec 04 83 fb 03 89 55 f0 77 09 c6 01 5c c6 41 01 00 eb 59 <c6> 04 19 00 8b 55 f0 8d 34 11 89 c2 eb 19 8b 42 08 83 eb 05 89
[    5.609997] EIP: [<80339e2f>] acpi_ns_build_external_path+0x1f/0x80 SS:ESP 0068:f7c4dc18
[    5.613331] Kernel panic - not syncing: Fatal exception
[    5.613331] Rebooting in 1 seconds..[    4.646664] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

I have bisected it down to:

 # bad:  [5b664cbe] Merge branch 'upstream-linus' of git://git.kernel.
 # good: [bce7f795] Linux 2.6.26
 # good: [e18425ab] Merge branch 'tracing/for-linus' of git://git.kern
 # good: [cadc7236] Merge branch 'bkl-removal' into next
 # good: [4515889a] Merge branch 'merge' of git://git.kernel.org/pub/s
 # good: [42fdd14e] Merge git://git.kernel.org/pub/scm/linux/kernel/gi
 # good: [8a0ca91f] Merge branch 'for-linus' of git://git.kernel.org/p
 # bad:  [0af4b8cb] ACPI: Introduce new device wakeup flag 'prepared'
 # good: [fe997407] PCI: construct one fakephp slot per PCI slot
 # bad:  [531f254a] PCIE: aer: use dev_printk when possible
 # bad:  [15650a20] x86/PCI: fixup early quirk probing
 # good: [0e6859d9] ACPI PM: Remove obsolete Toshiba workaround
 # bad:  [8344b566] PCI: ACPI PCI slot detection driver
 # good: [f46753c9] PCI: introduce pci_slot

 | 8344b568f5 is first bad commit
 | commit 8344b568f5
 | Author: Alex Chiang <achiang@hp.com>
 | Date:   Tue Jun 10 15:30:42 2008 -0600
 |
 |     PCI: ACPI PCI slot detection driver
 |
 |     Detect all physical PCI slots as described by ACPI, and create entries in
 |     /sys/bus/pci/slots/.

I.e. the new CONFIG_ACPI_PCI_SLOT=y option was causing this crash.

But the bug is not mainly in this new PCI code - that code was just
hitting the ACPI code in a new way which made ACPI break.

The crash signature shows that we are crashing on this instruction:

   movb $0x0, (%ecx, %ebx, 1)

ECX and EBX are 0x10 and -1. It's this line in
drivers/acpi/namespace/nsnames.c's acpi_ns_build_external_path():

        name_buffer[index] = 0;

I.e. name_buffer is 0x10 and index is -1.

index -1 corresponds to size 0, and name_buffer 0x10 is slab's
ZERO_SIZE_PTR special-case for zero-sized allocations.

I.e. when we called acpi_ns_handle_to_pathname(), we got required_size
of 0 due to an error condition, but this is passed to the ACPI allocator
unconditionally:

        required_size = acpi_ns_get_pathname_length(node);

        /* Validate/Allocate/Clear caller buffer */

        status = acpi_ut_initialize_buffer(buffer, required_size);
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
        }

Where acpi_ut_initialize_buffer(), through many (unnecessary) layers,
ends up calling kzalloc(0). Which returns 0x10 and that then causes the
crash later on.

So fix both callers of acpi_ns_get_pathname_length(), which can return 0
in case of an invalid node.

Also add a WARN_ON() against zero sized allocations in
acpi_ut_initialize_buffer() to make it easier to find similar instances
of this bug.

I have tested this patch for the past 24 hours and the crash has not
reappeared.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-22 00:27:48 +02:00
Ingo Molnar
eb6a12c242 Merge branch 'linus' into cpus4096-for-linus
Conflicts:

	net/sunrpc/svc.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-21 17:19:50 +02:00
Thomas Gleixner
5e248ac9a5 APCI: revert another duplicated patch
commit d185705690 ("ACPI: don't walk
tables if ACPI was disabled") is another superfluous duplicate commit
caused by git -> quilt -> git conversion.

Revert it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20 17:14:57 -07:00
Thomas Gleixner
392798a17b APCI: revert duplicated patch
commit 816c2eda3c ("dock: bay: Don't call
acpi_walk_namespace() when ACPI is disabled.") was merged between
2.6.26-rc8 and -rc9)

Due to rebasing the ACPI tree via quilt the same patch got applied again
via commit cc7e51666d ("dock: bay: Don't
call acpi_walk_namespace() when ACPI is disabled.")

Revert it, as it is obviously bogus.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20 17:14:57 -07:00
Mike Travis
65c0118453 cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr
* This patch replaces the dangerous lvalue version of cpumask_of_cpu
    with new cpumask_of_cpu_ptr macros.  These are patterned after the
    node_to_cpumask_ptr macros.

    In general terms, if there is a cpumask_of_cpu_map[] then a pointer to
    the cpumask_of_cpu_map[cpu] entry is used.  The cpumask_of_cpu_map
    is provided when there is a large NR_CPUS count, reducing
    greatly the amount of code generated and stack space used for
    cpumask_of_cpu().  The pointer to the cpumask_t value is needed for
    calling set_cpus_allowed_ptr() to reduce the amount of stack space
    needed to pass the cpumask_t value.

    If there isn't a cpumask_of_cpu_map[], then a temporary variable is
    declared and filled in with value from cpumask_of_cpu(cpu) as well as
    a pointer variable pointing to this temporary variable.  Afterwards,
    the pointer is used to reference the cpumask value.  The compiler
    will optimize out the extra dereference through the pointer as well
    as the stack space used for the pointer, resulting in identical code.

    A good example of the orthogonal usages is in net/sunrpc/svc.c:

	case SVC_POOL_PERCPU:
	{
		unsigned int cpu = m->pool_to[pidx];
		cpumask_of_cpu_ptr(cpumask, cpu);

		*oldmask = current->cpus_allowed;
		set_cpus_allowed_ptr(current, cpumask);
		return 1;
	}
	case SVC_POOL_PERNODE:
	{
		unsigned int node = m->pool_to[pidx];
		node_to_cpumask_ptr(nodecpumask, node);

		*oldmask = current->cpus_allowed;
		set_cpus_allowed_ptr(current, nodecpumask);
		return 1;
	}

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18 22:02:57 +02:00
Ingo Molnar
bb2c018b09 Merge branch 'linus' into cpus4096
Conflicts:

	drivers/acpi/processor_throttling.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18 22:00:54 +02:00
Ingo Molnar
3e370b29d3 Merge branch 'linus' into x86/pci-ioapic-boot-irq-quirks
Conflicts:

	drivers/pci/quirks.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18 19:31:12 +02:00
Andi Kleen
725c3a2d70 Revert "ACPI: don't walk tables if ACPI was disabled"
This reverts commit d185705690.

Double commit, noticed by Thomas Gleixner.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-18 09:12:49 +02:00
Andi Kleen
97d2ef5686 Merge branch 'merge' into release-2.6.27 2008-07-18 01:43:31 +02:00
Andi Kleen
e1469c34eb Revert "dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled."
Revert double commit by mistake. Noticed by Thomas Gleixner.

This reverts commit cc7e51666d.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-18 01:43:08 +02:00
Andi Kleen
b1d77fae0c Revert "Fix FADT parsing"
This reverts commit 01a5bba576.

There seem to be some FADTs around with bogus information
in the v2 fields. Revert this patch for now until
this can be properly resolved.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-18 01:42:20 +02:00
Zhao Yakui
ea51011a27 ACPI : Set FAN device to correct state in boot phase
Subject:ACPI: Set FAN device to correct state in boot phase
From: Zhao Yakui <yakui.zhao@intel.com>

On some laptops when ACPI FAN driver is loaded, maybe the FAN device will be
turned on. But if the temperature is below the threshold, the corresponding
FAN device should be turned off in the course of loading thermal driver.

So it is necessary to set the FAN device to the correct state in course of loading
the thermal driver.

http://bugzilla.kernel.org/show_bug.cgi?id=8049

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-18 01:41:50 +02:00
Zhao Yakui
c2c789057f ACPI: Ignore _BQC object when registering backlight device
According to acpi spec , the objectes of  _BCL and _BCM are required if
integrated LCD is present and supports brightness level and the _BQC is
the optional object. So the _BQC object will be ignored when the backlight
device is registered.
At the same time when there is no _BQC object, the current brightness will be
set to the maximum.

http://bugzilla.kernel.org/show_bug.cgi?id=10206

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui  <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-18 01:41:49 +02:00
Bjorn Helgaas
4a5e3638b1 ACPI: stop complaints about interrupt link End Tags and blank IRQ descriptors
Silently ignore _PRS End Tags.  We already ignore Start Dependent Functions in
_PRS, and we already ignore End Tags in _CRS, so we might as well ignore End
Tags in _PRS as well.

Silently ignore _PRS IRQ descriptors that mention no interrupts.  The spec
allows this (section 6.4.2.1 in ACPI 3.0b spec), and it probably means the
interrupt link can't be configured at all.

This patch doesn't change any functional behavior; it just removes confusing
complaints like these:

    ACPI: Blank IRQ resource
    ACPI: Resource is not an IRQ entry

when parsing _PRS data "23 00 00 18 79 00" from an IBM xSeries 335 dual
Pentium IV Xeon 2.40 GHz machine.  For more details, see
    http://bugzilla.kernel.org/show_bug.cgi?id=11049

The "23 00 00 18" part is a three-byte-long small IRQ resource with no bits set
in the IRQ mask ("00 00"), and level-triggered, active low, shareable ("18").

The "79 00" is an End Tag (type 0x7).  It is superfluous since there is no
Start Dependent Function tag and there are no resources after it, but it is
harmless.

Thanks to Gabriele Trombetti <g.trombetti.lkrnl1213@logicschema.com>
(aka Kurk) for reporting this and testing the patch.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-18 01:41:49 +02:00
Linus Torvalds
dc7c65db28 Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (72 commits)
  Revert "x86/PCI: ACPI based PCI gap calculation"
  PCI: remove unnecessary volatile in PCIe hotplug struct controller
  x86/PCI: ACPI based PCI gap calculation
  PCI: include linux/pm_wakeup.h for device_set_wakeup_capable
  PCI PM: Fix pci_prepare_to_sleep
  x86/PCI: Fix PCI config space for domains > 0
  Fix acpi_pm_device_sleep_wake() by providing a stub for CONFIG_PM_SLEEP=n
  PCI: Simplify PCI device PM code
  PCI PM: Introduce pci_prepare_to_sleep and pci_back_from_sleep
  PCI ACPI: Rework PCI handling of wake-up
  ACPI: Introduce new device wakeup flag 'prepared'
  ACPI: Introduce acpi_device_sleep_wake function
  PCI: rework pci_set_power_state function to call platform first
  PCI: Introduce platform_pci_power_manageable function
  ACPI: Introduce acpi_bus_power_manageable function
  PCI: make pci_name use dev_name
  PCI: handle pci_name() being const
  PCI: add stub for pci_set_consistent_dma_mask()
  PCI: remove unused arch pcibios_update_resource() functions
  PCI: fix pci_setup_device()'s sprinting into a const buffer
  ...

Fixed up conflicts in various files (arch/x86/kernel/setup_64.c,
arch/x86/pci/irq.c, arch/x86/pci/pci.h, drivers/acpi/sleep/main.c,
drivers/pci/pci.c, drivers/pci/pci.h, include/acpi/acpi_bus.h) from x86
and ACPI updates manually.
2008-07-16 17:25:46 -07:00
Jan Beulich
01a5bba576 Fix FADT parsing
The (1.0 inherited) separate length fields in the FADT are byte granular.
Further, PM1a/b may have distinct lengths and live in distinct address spaces.
 acpi_tb_convert_fadt() should account for all of these conditions.

Apart from these changes I'm puzzled by the fact that, not just for
acpi_gbl_xpm1{a,b}_enable, acpi_hw_low_level_{read,write}() get an explicit
size passed rather than using the size found in the passed GAS.  What happens
on a platform that defines PM1{a,b} wider than 16 bits?  Of course,
acpi_hw_low_level_{read,write}() at present are entirely un-prepared to deal
with sizes other than 8, 16, or 32, not to speak of a non-zero bit_offset or
access_width...

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-07-16 23:27:08 +02:00
Aaron Durbin
4d3870431d Add the ability to reset the machine using the RESET_REG in ACPI's FADT table.
Signed-off-by: Aaron Durbin <adurbin@google.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-07-16 23:27:08 +02:00
Bjorn Helgaas
c83642d512 ACPI: use dev_printk when possible
Convert printks to use dev_printk().  The most obvious change will
be messages like this:

   -ACPI: PCI Interrupt 0000:00:04.0[A] -> GSI 31 (level, low) -> IRQ 31
   +cciss 0000:00:04.0: PCI INT A -> GSI 31 (level, low) -> IRQ 31

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:07 +02:00
Julia Jomantaite
469778c174 ACPI: video: fix brightness allocation
Fix use of uninitialized device->brightness.

Signed-off-by: Julia Jomantaite <julia.jomantaite@gmail.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-07-16 23:27:05 +02:00
Zhao Yakui
2a2a64714d ACPI: Disable MWAIT via DMI on broken Compal board
If a system matches in this DMI table,
Linux will disable MWAIT support for idle.
ie. "idle=nomwait" is automatically invoked
and C1_FFH and C2C3_FFH access mode are disabled.

http://bugzilla.kernel.org/show_bug.cgi?id=10807
http://bugzilla.kernel.org/show_bug.cgi?id=10914

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:05 +02:00
Zhao Yakui
da5e09a1b3 ACPI : Create "idle=nomwait" bootparam
"idle=nomwait" disables the use of the MWAIT
instruction from both C1 (C1_FFH) and deeper (C2C3_FFH)
C-states.

When MWAIT is unavailable, the BIOS and OS generally
negotiate to use the HALT instruction for C1,
and use IO accesses for deeper C-states.

This option is useful for power and performance
comparisons, and also to work around BIOS bugs
where broken MWAIT support is advertised.

http://bugzilla.kernel.org/show_bug.cgi?id=10807
http://bugzilla.kernel.org/show_bug.cgi?id=10914

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:05 +02:00
Zhao Yakui
c1e3b377ad ACPI: Create "idle=halt" bootparam
"idle=halt" limits the idle loop to using
the halt instruction.  No MWAIT, no IO accesses,
no C-states deeper than C1.

If something is broken in the idle code,
"idle=halt" is a less severe workaround
than "idle=poll" which disables all power savings.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:05 +02:00
Zhang Rui
71b58cbb0c ACPI: Enhance /sys/firmware/interrupts to allow enable/disable/clear from user-space
Allow users to enable/disable/clear a specific & valid GPE/Fixed Event
in user space.

This is useful for debugging, especially for some
interrupt storm issues.

All wakeup GPEs are disabled and they can not be enabled at runtime,
and we mark them as invalid.

All GPEs that don't have a _Lxx/_Exx method are marked as invalid.

All Fixed Events that don't have an event handler are marked as invalid
and they can't be enabled until an event handler is registered.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Ling Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
b53ce3f718 ACPICA: Fix mutex debug code for wrong loop termination value
Loop was terminating one iteration early, missing one of the
debugger handshake mutexes. Linn Crosetto.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
fd0a43276d ACPICA: Cleanup of _PRT parsing code
Removed extraneous else clauses, other general cleanup.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
71d993e115 ACPICA: Cleanup debug operand dump mechanism
Eliminated unnecessary operands; eliminated use of negative index
in loop.  Operands now displayed in correct order, not backwards.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
5a1a57efeb ACPICA: Fix for invalid large array index on 64-bit systems
This problem was introduced in 20080514 as a result of the
elimination of the acpi_native_uint type. Code uses a negative
array index, which should be eliminated.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
19d0cfe9dd ACPICA: Update DMAR and SRAT table definitions
Synchronized tables with current specifications.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
d0e184abc5 ACPICA: Workaround for reversed _PRT entries from BIOS
Some BIOSs erroneously reverse the _PRT SourceName and the
SourceIndex.  Detect and repair this problem. MS ACPI also allows
and repairs this problem, thus ACPICA must also.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
4b8ed63167 ACPICA: Add const qualifier for appropriate string constants
Mostly MODULE_NAME and printf format strings.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:04 +02:00
Bob Moore
b52437641e ACPICA: Several lint changes, no functional changes
Remove pointer cast warnings and fix for a debug printf.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:03 +02:00
Bob Moore
d97b4358da ACPICA: Removed unused include files from source files
From lint.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:03 +02:00
Bob Moore
67a119f990 ACPICA: Eliminate acpi_native_uint type v2
No longer needed; replaced mostly with u32, but also acpi_size
where a type that changes 32/64 bit on 32/64-bit platforms is
required.

v2: Fix a cast of a 32-bit int to a pointer in ACPI to avoid a compiler warning.
from David Howells

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:03 +02:00
Bob Moore
11f2a61ab4 ACPICA: Fix possible negative array index in acpi_ut_validate_exception
Added NULL fields to the exception string arrays to eliminate
the -1 subtraction on the SubStatus field.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:03 +02:00
Bob Moore
c91d924e3a ACPICA: Fix for hang on GPE method invocation
Fixes problem where the new method argument count validation mechanism
will enter an infinite loop when a GPE method is dispatched.
Problem fixed be removing the obsolete code that passes GPE block
information to the notify handler via the control method parameter pointer.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:03 +02:00
Bob Moore
f3454ae810 ACPICA: Add argument count checking to control method invocation via acpi_evaluate_object
Error if too few arguments, warning if too many. This applies
only to external programmatic control method execution, not
method-to-method calls within the AML.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:03 +02:00
Rafael J. Wysocki
741438b500 ACPI PM: Remove obsolete Toshiba workaround
Remove the obsolete workaround for a Toshiba Satellite 4030cdt
S1 problem from drivers/acpi/sleep/main.c .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-07-16 23:27:02 +02:00
David Brownell
2fe2de5f6c ACPI PM: acpi_pm_device_sleep_state() cleanup
Get rid of a superfluous acpi_pm_device_sleep_state() parameter.  The
only legitimate value of that parameter must be derived from the first
parameter, which is what all the callers already do.  (However, this
does not address the fact that ACPI still doesn't set up those flags.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-07-16 23:27:02 +02:00
Len Brown
cc7e51666d dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled.
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:02 +02:00
Vegard Nossum
d185705690 ACPI: don't walk tables if ACPI was disabled
Ingo Molnar wrote:
> -tip auto-testing started triggering this spinlock corruption message
> yesterday:
>
> [    3.976213] calling  acpi_rtc_init+0x0/0xd3
> [    3.980213] ACPI Exception (utmutex-0263): AE_BAD_PARAMETER, Thread F7C50000 could not acquire Mutex [3] [20080321]
> [    3.992213] BUG: spinlock bad magic on CPU#0, swapper/1
> [    3.992213]  lock: c2508dc4, .magic: 00000000, .owner: swapper/1, .owner_cpu: 0

This is apparently because some parts of ACPI, including mutexes, are not
initialized when acpi=off is passed to the kernel.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:02 +02:00
Bob Moore
e38e8a0743 Make GPE disable more robust
Implemented another change for the GPE disable. We now perform a
read-change-write of the enable register instead of simply writing out the
cached enable mask. This will prevent inadvertent enabling of GPEs if a rogue
GPE is received during initialization (before GPE handlers are installed.)

http://bugzilla.kernel.org/show_bug.cgi?id=6217

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:01 +02:00
Randy Dunlap
12b2b34e24 acpi: fix printk format warning
Fix printk format warning:

linux-next-20080617/drivers/acpi/processor_throttling.c:1258: warning: format '%d' expects type 'int', but argument 4 has type 'size_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:01 +02:00
Yi Yang
3d532d5e38 ACPI: fix processor throttling set error
http://bugzilla.kernel.org/show_bug.cgi?id=9704

When echo some invalid values to /proc/acpi/processor/*/throttling,
there isn't any error info returned, on the contray, it sets
throttling value to some T* successfully, obviously, this is incorrect,
a correct way should be to let it fail and return error info.

This patch fixed the aforementioned issue, it also enables
/proc/acpi/processor/*/throttling to accept such values as 't0' and 'T0',
it also strictly limits /proc/acpi/processor/*/throttling only to accept
 "*", "t*" and "T*", "*" is the throttling state value the processor can
support, current, it is 0 - 7.

Before applying this patch, the test result is below:

[root@localhost acpi]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T1
state available: T0 to T7
states:
    T0:                  100%
   *T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost acpi]# echo "1xxxxxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost acpi]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T1
state available: T0 to T7
states:
    T0:                  100%
   *T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost acpi]# echo "0" > /proc/acpi/processor/CPU0/throttling
[root@localhost acpi]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost acpi]# cd /
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "T0" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "T7" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "T100" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "xxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "2xxxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T2
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
   *T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost /]# echo "7777" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost /]# echo "7xxx" > /proc/acpi/processor/CPU0/throttling
[root@localhost /]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost /]#

After applying this patch, the test result is below:

[root@localhost linux-2.6.24-rc6]# echo > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "0" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo "t0" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo "T0" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
states:
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo "T7" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo "T8" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# vi drivers/acpi/processor_throttling.c
[root@localhost linux-2.6.24-rc6]# echo "T8" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "t7" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo "t70" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "70" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "7000" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "70" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo "xxx" > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo -n > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo -n "" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo $?
0
[root@localhost linux-2.6.24-rc6]# echo -n "" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo -n "" > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T7
state available: T0 to T7
states:
    T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
   *T7:                  12%
[root@localhost linux-2.6.24-rc6]# echo t0 > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo T0 > /proc/acpi/processor/CPU0/throttling
[root@localhost linux-2.6.24-rc6]# echo Tt0 > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]# echo T > /proc/acpi/processor/CPU0/throttling
-bash: echo: write error: Invalid argument
[root@localhost linux-2.6.24-rc6]#

Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:01 +02:00
Yi Yang
6594d87ebd ACPI: fix acpi fan state set error
Under /proc/acpi, there is a fan control interface, a user can
set 0 or 3 to /proc/acpi/fan/*/state, 0 denotes D0 state, 3
denotes D3 state, but in current implementation, a user can
set a fan to D1 state by any char excluding '1', '2' and '3'.

For example:

[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "xxxxx" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on

Obviously, such inputs as "" and "xxxxx" are invalid for fan state.

This patch fixes this issue, it strictly limits fan state only to
accept 0, 1, 2 and 3, any other inputs are invalid.

Before applying this patch, the test result is:

[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "xxxxx" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "3x" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost acpi]# echo "-1x" > /proc/acpi/fan/C31B/state
[root@localhost acpi]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost acpi]#

After applying this patch, the test result is:

[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "" > /proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "3" > /proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "xxxxx" > /proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "-1x" > /proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "0" > //proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost ~]# echo "4" > //proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost ~]# echo "3" > //proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  off
[root@localhost ~]# echo "0" > //proc/acpi/fan/C31B/state
[root@localhost ~]# cat /proc/acpi/fan/C31B/state
status:                  on
[root@localhost ~]# echo "3x" > //proc/acpi/fan/C31B/state
-bash: echo: write error: Invalid argument
[root@localhost ~]#

Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-07-16 23:27:01 +02:00
Alok N Kataria
74523c9013 ACPI: fix checkpatch.pl complaints in scan.c
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:01 +02:00
Mike Travis
706546d023 ACPI: change processors from array to per_cpu variable
Change processors from an array sized by NR_CPUS to a per_cpu variable.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:01 +02:00
Zhang Rui
9f1eb99c75 create sysfs link from acpi device to sysdev for cpu
Sys I/F under acpi device node and sysdev device node are both
needed for cpu hot-removal. User space need this link so that
they know they are poking the sys I/F for the same cpu.
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:01 +02:00
Zhang Rui
b62b8ef906 force offline the processor during hot-removal
The ACPI device node for the cpu has already been unregistered
when acpi_processor_handle_eject is called.
Thus we should offline the cpu and continue, rather than a failure here.
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:01 +02:00
Zhang Rui
26d46867b7 fix a deadlock issue when poking "eject" file
"/sys/devices/LNXSYSTM:00/.../eject" is used to evaluate _EJx method
and eject a device in user space.
But system hangs when poking the "eject" file because that
the device hot-removal code invoke the driver .remove method which will
try to remove the "eject" file as a result.

Queues the hot-removal function for deferred execution in this patch.
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2008-07-16 23:27:00 +02:00
Ingo Molnar
82638844d9 Merge branch 'linus' into cpus4096
Conflicts:

	arch/x86/xen/smp.c
	kernel/sched_rt.c
	net/iucv/iucv.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-16 00:29:07 +02:00
Ingo Molnar
1a781a777b Merge branch 'generic-ipi' into generic-ipi-for-linus
Conflicts:

	arch/powerpc/Kconfig
	arch/s390/kernel/time.c
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/cpu/perfctr-watchdog.c
	arch/x86/kernel/i8259_64.c
	arch/x86/kernel/ldt.c
	arch/x86/kernel/nmi_64.c
	arch/x86/kernel/smpboot.c
	arch/x86/xen/smp.c
	include/asm-x86/hw_irq_32.h
	include/asm-x86/hw_irq_64.h
	include/asm-x86/mach-default/irq_vectors.h
	include/asm-x86/mach-voyager/irq_vectors.h
	include/asm-x86/smp.h
	kernel/Makefile

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-15 21:55:59 +02:00
Ingo Molnar
15e551d25e x86, VisWS: turn into generic arch, eliminate Kconfig specials
remove leftover traces of various VISWS related Kconfig specials.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10 18:55:47 +02:00
Stefan Assmann
e1d3a90846 pci, acpi: reroute PCI interrupt to legacy boot interrupt equivalent
Some chipsets (e.g. intel 6700PXH) generate a legacy INTx when the
IRQ entry in the chipset's IO-APIC is masked (as, e.g. the RT kernel
does during interrupt handling). On chipsets where this INTx generation
cannot be disabled, we reroute the valid interrupts to their legacy
equivalent to get rid of spurious interrupts that might otherwise bring
down (vital) interrupt lines through spurious interrupt detection in
note_interrupt().

This patch benefited from discussions with Alexander Graf, Torsten Duwe,
Ihno Krumreich, Daniel Gollub, Hannes Reinecke. The conclusions we drew
and the patch itself are the authors' responsibility alone.

Signed-off-by: Stefan Assmann <sassmann@suse.de>
Signed-off-by: Olaf Dabrunz <od@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08 17:50:53 +02:00
Ingo Molnar
c73d8dd859 Revert parts of "x86: update mptable"
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08 11:08:42 +02:00
Ingo Molnar
896395c290 Merge branch 'linus' into tmp.x86.mpparse.new 2008-07-08 10:32:56 +02:00
Rafael J. Wysocki
eb9d0fe40e PCI ACPI: Rework PCI handling of wake-up
* Introduce function acpi_pm_device_sleep_wake() for enabling and
  disabling the system wake-up capability of devices that are power
  manageable by ACPI.

* Introduce function acpi_bus_can_wakeup() allowing other (dependent)
  subsystems to check if ACPI is able to enable the system wake-up
  capability of given device.

* Introduce callback .sleep_wake() in struct pci_platform_pm_ops and
  for the ACPI PCI 'driver' make it use acpi_pm_device_sleep_wake().

* Introduce callback .can_wakeup() in struct pci_platform_pm_ops and
  for the ACPI 'driver' make it use acpi_bus_can_wakeup().

* Move the PME# handlig code out of pci_enable_wake() and split it
  into two functions, pci_pme_capable() and pci_pme_active(),
  allowing the caller to check if given device is capable of
  generating PME# from given power state and to enable/disable the
  device's PME# functionality, respectively.

* Modify pci_enable_wake() to use the new ACPI callbacks and the new
  PME#-related functions.

* Drop the generic .platform_enable_wakeup() callback that is not
  used any more.

* Introduce device_set_wakeup_capable() that will set the
  power.can_wakeup flag of given device.

* Rework PCI device PM initialization so that, if given device is
  capable of generating wake-up events, either natively through the
  PME# mechanism, or with the help of the platform, its
  power.can_wakeup flag is set and its power.should_wakeup flag is
  unset as appropriate.

* Make ACPI set the power.can_wakeup flag for devices found to be
  wake-up capable by it.

* Make the ACPI wake-up code enable/disable GPEs for devices that
  have the wakeup.flags.prepared flag set (which means that their
  wake-up power has been enabled).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:26:28 -07:00
Rafael J. Wysocki
0af4b8c4fb ACPI: Introduce new device wakeup flag 'prepared'
Introduce additional flag 'prepared' in struct acpi_device_wakeup_flags
and use it to prevent devices from being enable/disabled do wake up the
system multiple times in a row (this does not happen currently, but will
be possible after some of the following patches).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:26:14 -07:00
Rafael J. Wysocki
77e766099e ACPI: Introduce acpi_device_sleep_wake function
The currect ACPI code attempts to execute _PSW at three different
places and in one of them only it tries to execute _DSW before _PSW,
which is inconsistent with the other two cases.

Move the execution of _DSW and _PSW into a separate function called
acpi_device_sleep_wake() and call it wherever appropriate instead of
executing _DSW and/or _PSW directly.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:25:57 -07:00
Rafael J. Wysocki
3737b2b104 ACPI: Introduce acpi_bus_power_manageable function
Introduce function acpi_bus_power_manageable() allowing other
(dependent) subsystems to check if ACPI is able to power manage given
device.  This may be useful, for example, for PCI device power
management.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-07 16:25:02 -07:00
Ingo Molnar
68083e05d7 Merge commit 'v2.6.26-rc9' into cpus4096 2008-07-06 14:23:39 +02:00
H. Peter Anvin
4b4f7280d7 x86 ACPI: normalize segment descriptor register on resume
Some Dell laptops enter resume with apparent garbage in the segment
descriptor registers (almost certainly the result of a botched
transition from protected to real mode.)  The only way to clean that
up is to enter protected mode ourselves and clean out the descriptor
registers.

This fixes resume on Dell XPS M1210 and Dell D620.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=10927

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: pm list <linux-pm@lists.linux-foundation.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-05 08:25:40 +02:00
Huacai Chen
cce3ce89c1 rtc: fix CMOS time error after writing /proc/acpi/alarm
When writing /proc/acpi/alarm in adjust mode, e.g.
	echo "+0000-00-00 00:00:15" >/proc/acpi/alarm
The "century" field should be read and added to "year" field before
writing, otherwise the CMOS time will go back to 2000 years ago, e.g.
	# cat /proc/acpi/alarm
	0008-06-21 11:38:46
Then the system time may be reset to the date of manufacture after
rebooting. This patch fixed this issue.

Signed-off-by: Huacai Chen <huacai.chen@intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
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>
2008-07-04 10:40:05 -07:00
Jens Axboe
8691e5a8f6 smp_call_function: get rid of the unused nonatomic/retry argument
It's never used and the comments refer to nonatomic and retry
interchangably. So get rid of it.

Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-06-26 11:24:35 +02:00
Len Brown
816c2eda3c dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled.
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-26 01:55:27 -04:00
Vegard Nossum
4389ed2ff6 ACPI: don't walk tables if ACPI was disabled
Ingo Molnar wrote:
> -tip auto-testing started triggering this spinlock corruption message
> yesterday:
>
> [    3.976213] calling  acpi_rtc_init+0x0/0xd3
> [    3.980213] ACPI Exception (utmutex-0263): AE_BAD_PARAMETER, Thread F7C50000 could not acquire Mutex [3] [20080321]
> [    3.992213] BUG: spinlock bad magic on CPU#0, swapper/1
> [    3.992213]  lock: c2508dc4, .magic: 00000000, .owner: swapper/1, .owner_cpu: 0

This is apparently because some parts of ACPI, including mutexes, are not
initialized when acpi=off is passed to the kernel.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-26 01:55:18 -04:00
Len Brown
5a87f7f5e5 Merge branch 'bugzilla-9761' into release 2008-06-20 02:47:16 -04:00
Len Brown
f163ff5176 ACPI: no AC status notification
http://bugzilla.kernel.org/show_bug.cgi?id=10695

Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-14 01:26:37 -04:00
Zhang Rui
d385c2a858 ACPI Exception (video-1721): UNKNOWN_STATUS_CODE, Cant attach device
The child of a video bus device is not alway a video device.
It should be a warn message rather than an exception here.
http://bugzilla.kernel.org/show_bug.cgi?id=9761

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-14 01:01:18 -04:00
Rafael J. Wysocki
d8f3de0d24 Suspend-related patches for 2.6.27
ACPI PM: Add possibility to change suspend sequence

There are some systems out there that don't work correctly with
our current suspend/hibernation code ordering.  Provide a workaround
for these systems allowing them to pass 'acpi_sleep=old_ordering' in
the kernel command line so that it will use the pre-ACPI 2.0 ("old")
suspend code ordering.

Unfortunately, this requires us to add a platform hook to the
resuming of devices for recovering the platform in case one of the
device drivers' .suspend() routines returns error code.  Namely,
ACPI 1.0 specifies that _PTS should be called before suspending
devices, but _WAK still should be called before resuming them in
order to undo the changes made by _PTS.  However, if there is an
error during suspending devices, they are automatically resumed
without returning control to the PM core, so the _WAK has to be
called from within device_resume() in that cases.

The patch also reorders and refactors the ACPI suspend/hibernation
code to avoid duplication as far as reasonably possible.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-12 14:25:09 -07:00
Jesse Barnes
53eb2fbeb9 Merge branch 'suspend' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 into linux-next 2008-06-12 12:06:58 -07:00
Rafael J. Wysocki
0e6859d49f ACPI PM: Remove obsolete Toshiba workaround
Remove the obsolete workaround for a Toshiba Satellite 4030cdt
S1 problem from drivers/acpi/sleep/main.c .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:33:19 -04:00
David Brownell
06166780eb ACPI PM: acpi_pm_device_sleep_state() cleanup
Get rid of a superfluous acpi_pm_device_sleep_state() parameter.  The
only legitimate value of that parameter must be derived from the first
parameter, which is what all the callers already do.  (However, this
does not address the fact that ACPI still doesn't set up those flags.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:33:19 -04:00
Len Brown
3549dba2c3 ACPICA: fix stray va_end() caused by mis-merge
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Arjan van de Ven
a39a2d7c72 ACPI: Reject below-freezing temperatures as invalid critical temperatures
My laptop thinks that it's a good idea to give -73C as the critical
CPU temperature.... which isn't the best thing since it causes a shutdown
right at bootup.

Temperatures below freezing are clearly invalid critical thresholds
so just reject these as such.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Bob Moore
8410565f54 ACPICA: Fix for access to deleted object <regression>
Fixes problem introduced in 20080123, with fix for Unload operator.
Parse tree object can be already deleted; must use the opcode
within the WalkState.

ACPI: kmemcheck: Caught 16-bit read from freed memory
http://bugzilla.kernel.org/show_bug.cgi?id=10669

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Bob Moore
d52c79ace6 ACPICA: Fix to make _SST method optional
Fixes a problem introduced in 20080514 where the status of
execution of _SST is incorrectly returned to the caller. _SST
is optional, and if it is AE_NOT_FOUND, the exception should be
ignored.

http://www.acpica.org/bugzilla/show_bug.cgi?id=716

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Bob Moore
0bda3f2f86 ACPICA: Fix for Load operator, load table at the namespace root
This reverts a change introduced in version 20071019. The table
is now loaded at the namespace root even though this goes against
the ACPI specification.  This provides compatibility with other
ACPI implementations.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Bob Moore
bc45b1d39a ACPICA: Ignore ACPI table signature for Load() operator
Only "SSDT" is acceptable to the ACPI spec, but tables are
seen with OEMx and null sigs. Therefore, signature validation
is worthless.  Apparently MS ACPI accepts such signatures, ACPICA
must be compatible.

http://bugzilla.kernel.org/show_bug.cgi?id=10454

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Bob Moore
7aa7d4336d ACPICA: Fix to allow zero-length ASL field declarations
Allows null field list in Field(), BankField(), and IndexField().

2.6.26-rc1 regression: ACPI fails to load SDT. - Dell M1530
http://bugzilla.kernel.org/show_bug.cgi?id=10606

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Akinobu Mita
46a21e465e ACPI: use memory_read_from_buffer()
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Holger Macht
7efd52a407 bay: exit if notify handler cannot be installed
If acpi_install_notify_handler() for a bay device fails, the bay driver is
superfluous.  Most likely, another driver (like libata) is already caring
about this device anyway.  Furthermore,
register_hotplug_dock_device(acpi_handle) from the dock driver must not be
called twice with the same handler.  This would result in an endless loop
consuming 100% of CPU.  So clean up and exit.

Signed-off-by: Holger Macht <hmacht@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:47 -04:00
Tim Pepper
1fdd686086 dock.c remove trailing printk whitespace
Signed-off-by: Tim Pepper <lnxninja@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:46 -04:00
Adrian Bunk
a66b34b26f proper prototype for acpi_processor_tstate_has_changed()
This patch adds a proper prototype for acpi_processor_tstate_has_changed()
in include/acpi/processor.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:46 -04:00
Fenghua Yu
39b8931b5c ACPI: handle invalid ACPI SLIT table
This is a SLIT sanity checking patch.  It moves slit_valid() function to
generic ACPI code and does sanity checking for both x86 and ia64.  It sets up
node_distance with LOCAL_DISTANCE and REMOTE_DISTANCE when hitting invalid
SLIT table on ia64.  It also cleans up unused variable localities in
acpi_parse_slit() on x86.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:46 -04:00
Alistair John Strachan
c21d1e7f53 ACPI 2.6.26-rc2: Add missing newline to DSDT/SSDT warning message
As of recently (probably 2.6.26-rc1) I've been getting the following mangling
in the kernel log:

[4294014.568167] ACPI: DSDT override uses original SSDTs unless "acpi_no_auto_ssdt"<6>CPU0: Intel(R) Pentium(R) Dual  CPU  E2160  @ 1.80GHz stepping 0d

This is due to a missing newline character in the first message. The following
patch against 2.6.26-rc2 fixes it. Please apply.

Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:46 -04:00
Alexey Starikovskiy
1b7fc5aae8 ACPI: EC: Use msleep instead of udelay while waiting for event.
http://bugzilla.kernel.org/show_bug.cgi?id=10724

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:45 -04:00
Venkatesh Pallipadi
dcb84f335b cpuidle acpi driver: fix oops on AC<->DC
cpuidle and acpi driver interaction bug with the way cpuidle_register_driver()
is called. Due to this bug, there will be oops on
AC<->DC on some systems, where they support C-states in one DC and not in AC.

The current code does
ON BOOT:
	Look at CST and other C-state info to see whether more than C1 is
	supported. If it is, then acpi processor_idle does a
	cpuidle_register_driver() call, which internally enables the device.

ON CST change notification (AC<->DC) and on suspend-resume:
	acpi driver temporarily disables device, updates the device with
	any new C-states, and reenables the device.

The problem is is on boot, there are no C2, C3 states supported and we skip
the register. Later on AC<->DC, we may get a CST notification and we try
to reevaluate CST and enabled the device, without actually registering it.
This causes breakage as we try to create /sys fs sub directory, without the
parent directory which is created at register time.

Thanks to Sanjeev for reporting the problem here.
http://bugzilla.kernel.org/show_bug.cgi?id=10394

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:45 -04:00
Zhao Yakui
e1094bfa26 ACPI: Disable Fixed_RTC event when installing RTC handler
The Fixed_RTC event should be disabled when installing RTC handler.
Only when RTC alarm is set will it be enabled again. If it is not
disabled, maybe some machines will be powered on automatically after
the system is shutdown even when the RTC alarm is not set.

http://bugzilla.kernel.org/show_bug.cgi?id=10010

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:45 -04:00
Alex Chiang
8344b568f5 PCI: ACPI PCI slot detection driver
Detect all physical PCI slots as described by ACPI, and create entries in
/sys/bus/pci/slots/.

Not all physical slots are hotpluggable, and the acpiphp module does not
detect them.  Now we know the physical PCI geography of our system, without
caring about hotplug.

[kaneshige.kenji@jp.fujitsu.com: export-kobject_rename-for-pci_hotplug_core]
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: Greg KH <greg@kroah.com>
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix build with CONFIG_DMI=n]
Signed-off-by: Alex Chiang <achiang@hp.com>
Cc: Greg KH <greg@kroah.com>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Len Brown <len.brown@intel.com>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10 14:37:14 -07:00
Yinghai Lu
d49c428840 x86: make generic arch support NUMAQ
... so it could fall back to normal numa and we'd reduce the impact of the
NUMAQ subarch.

NUMAQ depends on GENERICARCH
also decouple genericarch numa from acpi.
also make it fall back to bigsmp if apicid > 8.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-10 11:34:42 +02:00
Yinghai Lu
2944e16b25 x86: update mptable
make mptable to be consistent with acpi routing, so we could:

1. kexec kernel with acpi=off
2. work around BIOSes where acpi routing is working, but mptable is
   not right, so can use kernel/kexec to start other OSes that don't have
   good acpi support.

command line: update_mptable

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-03 13:26:27 +02:00
Mike Travis
141ad0688a acpi: use performance variant for_each_cpu_mask_nr
Change references from for_each_cpu_mask to for_each_cpu_mask_nr
where appropriate

Reviewed-by: Paul Jackson <pj@sgi.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-23 18:35:12 +02:00
Harvey Harrison
b62151de49 acpi: fix integer as NULL pointer warning
drivers/acpi/dispatcher/dsmethod.c:568:50: warning: Using plain integer as NULL pointer
drivers/acpi/executer/exmutex.c:329:30: warning: Using plain integer as NULL pointer
drivers/acpi/executer/exmutex.c:466:31: warning: Using plain integer as NULL pointer

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-23 08:11:06 -07:00
Alexey Dobriyan
e0066c4ea9 Fix ACPI vs proc_create_data() mismerge
acpi_device_dir() is NULL until all files are createst, so everyting is
created in straight in /proc/ and creation code warns.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 16:26:27 -07:00
Linus Torvalds
08acd4f8af Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (179 commits)
  ACPI: Fix acpi_processor_idle and idle= boot parameters interaction
  acpi: fix section mismatch warning in pnpacpi
  intel_menlo: fix build warning
  ACPI: Cleanup: Remove unneeded, multiple local dummy variables
  ACPI: video - fix permissions on some proc entries
  ACPI: video - properly handle errors when registering proc elements
  ACPI: video - do not store invalid entries in attached_array list
  ACPI: re-name acpi_pm_ops to acpi_suspend_ops
  ACER_WMI/ASUS_LAPTOP: fix build bug
  thinkpad_acpi: fix possible NULL pointer dereference if kstrdup failed
  ACPI: check a return value correctly in acpi_power_get_context()
  #if 0 acpi/bay.c:eject_removable_drive()
  eeepc-laptop: add hwmon fan control
  eeepc-laptop: add backlight
  eeepc-laptop: add base driver
  ACPI: thinkpad-acpi: bump up version to 0.20
  ACPI: thinkpad-acpi: fix selects in Kconfig
  ACPI: thinkpad-acpi: use a private workqueue
  ACPI: thinkpad-acpi: fluff really minor fix
  ACPI: thinkpad-acpi: use uppercase for "LED" on user documentation
  ...

Fixed conflicts in drivers/acpi/video.c and drivers/misc/intel_menlow.c
manually.
2008-04-30 11:52:52 -07:00
Len Brown
96916090f4 Merge branches 'release', 'acpica', 'bugzilla-10224', 'bugzilla-9772', 'bugzilla-9916', 'ec', 'eeepc', 'idle', 'misc', 'pm-legacy', 'sysfs-links-2.6.26', 'thermal', 'thinkpad' and 'video' into release 2008-04-30 13:58:00 -04:00
Venkatesh Pallipadi
36a9135865 ACPI: Fix acpi_processor_idle and idle= boot parameters interaction
acpi_processor_idle and "idle=" boot parameter interaction is broken.
The problem is that, at boot time acpi driver is checking for "idle=" boot
option and not registering the acpi idle handler. But, when there is a CST
changed callback (typically when switching AC <-> battery or suspend-resume)
there are no checks for boot_option_idle_override and acpi idle handler tries
to get installed with nasty side effects.

With CPU_IDLE configured this issue causes results in a nasty oops on CST
change callback and without CPU_IDLE there is no oops, but boot option
of "idle=" gets ignored and acpi idle handler gets installed.

Change the behavior to not do anything in acpi idle handler when there is a
"idle=" boot option.

Note that the problem is only there when "idle=" boot option is used.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-30 13:57:15 -04:00
Alex Chiang
fe086a7bea [IA64] Provide ACPI fixup for /proc/cpuinfo/physical_id
Legacy HP ia64 platforms currently cannot provide
/proc/cpuinfo/physical_id due to legacy SAL/PAL implementations.
However, that physical topology information can be obtained
via ACPI.

Provide an interface that gives ACPI one last chance to provide
physical_id for these legacy platforms. This logic only comes
into play iff:

- ACPI actually provides slot information for the CPU
- we lack a valid socket_id

Otherwise, we don't do anything.

Since x86 uses the ACPI processor driver as well, we provide a nop
stub function for arch_fix_phys_package_id() in asm-x86/topology.h

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-29 15:05:29 -07:00
Linus Torvalds
5f78e4d339 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-pci
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-pci:
  x86: add pci=check_enable_amd_mmconf and dmi check
  x86: work around io allocation overlap of HT links
  acpi: get boot_cpu_id as early for k8_scan_nodes
  x86_64: don't need set default res if only have one root bus
  x86: double check the multi root bus with fam10h mmconf
  x86: multi pci root bus with different io resource range, on 64-bit
  x86: use bus conf in NB conf fun1 to get bus range on, on 64-bit
  x86: get mp_bus_to_node early
  x86 pci: remove checking type for mmconfig probe
  x86: remove unneeded check in mmconf reject
  driver core: try parent numa_node at first before using default
  x86: seperate mmconf for fam10h out from setup_64.c
  x86: if acpi=off, force setting the mmconf for fam10h
  x86_64: check MSR to get MMCONFIG for AMD Family 10h
  x86_64: check and enable MMCONFIG for AMD Family 10h
  x86_64: set cfg_size for AMD Family 10h in case MMCONFIG
  x86: mmconf enable mcfg early
  x86: clear pci_mmcfg_virt when mmcfg get rejected
  x86: validate against acpi motherboard resources

Fixed up fairly trivial conflicts in arch/x86/pci/{init.c,pci.h} due to
OLPC support manually.
2008-04-29 08:26:51 -07:00
Denis V. Lunev
cf7acfab03 acpi: use non-racy method for proc entries creation
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.

Add correct ->owner to proc_fops to fix reading/module unloading race.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:22 -07:00
Thomas Renninger
66fb9d120e ACPI: Cleanup: Remove unneeded, multiple local dummy variables
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:51:45 -04:00
Dmitry Torokhov
c46e5658a0 ACPI: video - fix permissions on some proc entries
POST and DOS are supposed to be writable but permissions
did not allow it.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:50:55 -04:00
Dmitry Torokhov
251cb0bc79 ACPI: video - properly handle errors when registering proc elements
Have acpi_video_device_add_fs() and acpi_video_bus_add_fs()
properly unwind proc creation after error.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:50:41 -04:00
Dmitry Torokhov
78eed028f1 ACPI: video - do not store invalid entries in attached_array list
this is a cleanup, not a change to function.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:50:31 -04:00
Len Brown
2c6e33c366 ACPI: re-name acpi_pm_ops to acpi_suspend_ops
... as they are platform_suspend_ops after all.

cosmetic re-name only, no functional change.

Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:15:27 -04:00
Li Zefan
a815ab8b58 ACPI: check a return value correctly in acpi_power_get_context()
We should check *resource != NULL rather than resource != NULL, which will be
always true.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:10:03 -04:00
Adrian Bunk
2a241d77cf #if 0 acpi/bay.c:eject_removable_drive()
This patch #if 0's the unused eject_removable_drive().

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 10:09:52 -04:00
Damián Viano
51ae796f7f ACPICA: always disable GPE when requested
acpi_ev_disable_gpe() has an optimization where it doesn't disable
a GPE that it "doesn't have to".  Unfortunately, it can get tricked
by AML that scribbles on register state behind its back.  So when asked
to disable a GPE, simply do it -- a redundant register write
in the common case is a fair price to pay to be bomb-proof
for the rare cases.

http://bugzilla.kernel.org/show_bug.cgi?id=6217

Signed-off-by: Damián Viano <des@debian.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 03:32:25 -04:00
Zhang, Rui
76ecb4f2d7 ACPI: update thermal temperature
Fix the problem that thermal_get_temp returns the cached value,
which causes the temperature in generic thermal never updates.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 02:53:42 -04:00
Julia Lawall
9030062f3d ACPI: elide a non-zero test on a result that is never 0
thermal_cooling_device_register used to return NULL if THERMAL is "n".
As the ACPI fan, processor and video drivers SELECT the generic
thermal in PATCH 01, this is not a problem any more.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 02:52:45 -04:00
Zhang Rui
e9ae71078b thermal: update the documentation
Update the documentation for the thermal driver hwmon sys I/F.

Change the ACPI thermal zone type to be consistent with hwmon.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 02:49:47 -04:00
Zhang, Rui
9ec732ff80 thermal: add new get_crit_temp callback
Add a new callback so that the generic thermal can get
the critical trip point info of a thermal zone,
which is needed for building the tempX_crit hwmon sysfs attribute.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 02:45:49 -04:00
Zhang Rui
63c4ec905d thermal: add the support for building the generic thermal as a module
Build the generic thermal driver as module "thermal_sys".

Make ACPI thermal, video, processor and fan SELECT the generic
thermal driver, as these drivers rely on it to build the sysfs I/F.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 02:44:00 -04:00
Zhang Rui
2f67a0695d flush kacpi_notify_wq before removing notify handler
Flush kacpi_notify_wq before notify handler is removed,
this can fix a bug which the deferred notify handler is executed
after the notify_handler has already been removed.
http://bugzilla.kernel.org/show_bug.cgi?id=9772

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29 02:34:42 -04:00
Mike Travis
c938ac2132 [CPUFREQ] change cpu freq tables to per_cpu variables
Change cpufreq tables from arrays to per_cpu variables in
drivers/acpi/processor_thermal.c

Based on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
2008-04-28 15:05:44 -04:00
Andrew Morton
d83fd8a267 drivers/acpi/thermal.c: fix build with CONFIG_DMI=n
drivers/acpi/thermal.c: In function 'acpi_thermal_init':
drivers/acpi/thermal.c:1794: error: 'thermal_dmi_table' undeclared (first use in this function)
drivers/acpi/thermal.c:1794: error: (Each undeclared identifier is reported only once
drivers/acpi/thermal.c:1794: error: for each function it appears in.)

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:30 -07:00
Peter Zijlstra
7f424a8b08 fix idle (arch, acpi and apm) and lockdep
OK, so 25-mm1 gave a lockdep error which made me look into this.

The first thing that I noticed was the horrible mess; the second thing I
saw was hacks like: 71e93d1561

The problem is that arch idle routines are somewhat inconsitent with
their IRQ state handling and instead of fixing _that_, we go paper over
the problem.

So the thing I've tried to do is set a standard for idle routines and
fix them all up to adhere to that. So the rules are:

  idle routines are entered with IRQs disabled
  idle routines will exit with IRQs enabled

Nearly all already did this in one form or another.

Merge the 32 and 64 bit bits so they no longer have different bugs.

As for the actual lockdep warning; __sti_mwait() did a plainly un-annotated
irq-enable.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-27 00:01:45 +02:00
Robert Hancock
7752d5cfe3 x86: validate against acpi motherboard resources
This path adds validation of the MMCONFIG table against the ACPI reserved
motherboard resources.  If the MMCONFIG table is found to be reserved in
ACPI, we don't bother checking the E820 table.  The PCI Express firmware
spec apparently tells BIOS developers that reservation in ACPI is required
and E820 reservation is optional, so checking against ACPI first makes
sense.  Many BIOSes don't reserve the MMCONFIG region in E820 even though
it is perfectly functional, the existing check needlessly disables MMCONFIG
in these cases.

In order to do this, MMCONFIG setup has been split into two phases.  If PCI
configuration type 1 is not available then MMCONFIG is enabled early as
before.  Otherwise, it is enabled later after the ACPI interpreter is
enabled, since we need to be able to execute control methods in order to
check the ACPI reserved resources.  Presently this is just triggered off
the end of ACPI interpreter initialization.

There are a few other behavioral changes here:

- Validate all MMCONFIG configurations provided, not just the first one.

- Validate the entire required length of each configuration according to
  the provided ending bus number is reserved, not just the minimum required
  allocation.

- Validate that the area is reserved even if we read it from the chipset
  directly and not from the MCFG table.  This catches the case where the
  BIOS didn't set the location properly in the chipset and has mapped it
  over other things it shouldn't have.

This also cleans up the MMCONFIG initialization functions so that they
simply do nothing if MMCONFIG is not compiled in.

Based on an original patch by Rajesh Shah from Intel.

[akpm@linux-foundation.org: many fixes and cleanups]
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Andi Kleen <ak@suse.de>
Cc: Rajesh Shah <rajesh.shah@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26 23:41:03 +02:00
Venkatesh Pallipadi
0fda6b403f 2.6.25 regression: powertop says 120K wakeups/sec
Patch to fix huge number of wakeups reported due to recent changes in
processor_idle.c. The problem was that the entry_method determination was
broken due to one of the recent commits (bc71bec91f) causing
C1 entry to not to go to halt.

http://lkml.org/lkml/2008/3/22/124

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-24 20:05:01 -04:00
Alexey Starikovskiy
204470272c ACPI: GPE enabling should happen after EC installation
GPE could try to access EC region, so should not be enabled before
EC is installed

http://bugzilla.kernel.org/show_bug.cgi?id=9916

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-24 19:55:20 -04:00
Len Brown
75a44ce00b ACPICA: update Intel copyright
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-23 23:00:13 -04:00
Bob Moore
cca97b8156 ACPICA: Fix for some local named nodes not marked temporary and to disallow duplicates
Fixed a problem with the CreateField, CreateXXXField (Bit, Byte,
Word, Dword, Qword), Field, BankField, and IndexField operators
when invoked from inside an executing control method. In this case,
these operators created namespace nodes that were incorrectly
left marked as permanent nodes instead of temporary nodes. This
could cause a problem if there is race condition between an
exiting control method and a running namespace walk. (Reported
by Linn Crosetto). Fixed a problem where the CreateField and
CreateXXXField operators would incorrectly allow duplicate names
(the name of the field) with no exception generated.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 23:01:51 -04:00
Zhang Rui
514d18d79b ACPICA: Update for new Notify values
Implemented several changes for Notify handling: Added support
for new Notify values (ACPI 2.0+) and improved the Notify debug
output. Notify on PowerResource objects is no longer allowed,
as per the ACPI specification.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 23:01:36 -04:00
Bob Moore
66d3ca9ea2 ACPICA: Fixes for size of StartDependent resource descriptor
Fixed a couple of size calculation issues with the variable-length
Start Dependent resource descriptor.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 19:09:25 -04:00
Bob Moore
d8846574ed ACPICA: Updates for Debug object output
Implemented several improvements for the output of the ASL "Debug"
object to clarify and keep all data for a given object on one
output line.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 19:09:16 -04:00
Bob Moore
cd0b224824 ACPICA: Fixes for external Reference Objects
All Reference Objects returned via the AcpiEvaluteObject interface
are now marked as type "REFERENCE" instead of "ANY". The type ANY
is now reservered for NULL objects - either NULL package elements
or unresolved named references.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 19:08:51 -04:00
Lin Ming
7a5bb99645 ACPICA: Fix to handle NULL package elements correctly
Fixed problem where NULL package elements were not returned to
the AcpiEvaluateObject interface correctly. Instead of returning a
NULL ACPI_OBJECT package element, the element was simply ignored,
potentially causing a buffer overflow and/or confusing the caller
who expected a fixed number of elements.

http://bugzilla.kernel.org/show_bug.cgi?id=10132

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 15:35:19 -04:00
Bob Moore
0ba7d25c70 ACPICA: Fix for extraneous debug message for packages
Fixed a problem where an extraneous debug message was produced for
package objects (when debugging enabled). The message "Package
List length larger than NumElements count" is now produced in
the correct case, and is also an error message rather than a
debug message. Added a debug message for the opposite case, where
NumElements is larger than the Package List, and the package has
been padded out with NULL elements.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 15:34:41 -04:00
Bob Moore
24a3157a90 ACPICA: Fix for possible error when packages/buffers are passed to methods externally
Fixed a problem where buffer and package objects passed as
arguments to a control method via the external AcpiEvaluateObject
interface could cause an AE_AML_INTERNAL exception depending on the
order and type of operators executed by the target control method.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:31 -04:00
Lin Ming
a3df4dadd4 ACPICA: Update behavior of CopyObject to match ACPI spec
Fixed a problem where a CopyObject to RegionField, BankField, and
IndexField objects did not perform an implicit conversion as it
should. These types must retain their initial type permanently as
per the ACPI specification. However, a CopyObject to all other
object types should not perform an implicit conversion, as per
the ACPI specification.

http://www.acpica.org/bugzilla/show_bug.cgi?id=388

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:31 -04:00
Bob Moore
1d5b285da1 ACPICA: Fix for resource descriptor optimization issues for _CRS/_SRC
Fixed a problem where resource descriptor size optimization
could cause a problem when a _CRS resource template is passed
to a _SRS method. The _SRS resource template must use the same
descriptors (with the same size) as returned from _CRS. This
change affects the following resource descriptors: IRQ/IRQNoFlags
and StartDependendentFn/StartDependentFnNoPri.

http://bugzilla.kernel.org/show_bug.cgi?id=9487

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:31 -04:00
Bob Moore
b1dd9096fe ACPICA: Added new error messages
New messages for the 2 AE_SUPPORT cases.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:31 -04:00
Bob Moore
507f046c4d ACPICA: Add va_end statements as appropriate
Added missing va_end statements that should correspond with each
va_start statement.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:31 -04:00
Lin Ming
bc7a36ab74 ACPICA: Fixes for Unload and DDBHandles
Implemented support for the use of DDBHandles as an Indexed
Reference, as per the ACPI spec.

http://www.acpica.org/bugzilla/show_bug.cgi?id=486.

Implemented support for UserTerm (Method invocation) for the Unload operator
as per the ACPI spec.

http://www.acpica.org/bugzilla/show_bug.cgi?id=580

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:30 -04:00
Lin Ming
47c08729bf ACPICA: Fix for LoadTable operator, input strings
Fixed a problem with the LoadTable operator where the OemId
and OemTableId input strings could cause unexpected failures if
they were shorter than the maximum lengths allowed.

http://www.acpica.org/bugzilla/show_bug.cgi?id=576

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:29 -04:00
Lin Ming
200cce6a75 ACPICA: Fix for Load operator
Fixed a problem with the Load operator where an exception was not
returned in the case where the table is already loaded.

http://www.acpica.org/bugzilla/show_bug.cgi?id=463

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:29 -04:00
Lin Ming
9accd46459 ACPICA: Methods now implicitly return 0 in slack mode
Implemented an enhancement to the interpreter "slack mode". In the
absence of an explicit return or an implicitly returned object from
the last executed opcode, a control method will now implicitly
return an integer of value 0 for Microsoft compatibility.

http://www.acpica.org/bugzilla/show_bug.cgi?id=392

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:29 -04:00
Lin Ming
8246934b7c ACPICA: Fix for SizeOf when used with Buffers and Packages
Fixed a problem with the SizeOf operator when used with Package
and Buffer objects. These objects have deferred execution for some
arguments, and the execution is now completed before the SizeOf is
executed. This problem caused unexpected AE_PACKAGE_LIMIT errors
on some systems.

http://bugzilla.kernel.org/show_bug.cgi?id=9558

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:29 -04:00
Lin Ming
ef805d9563 ACPICA: Implemented full argument resolution support for the BankValue argument to BankField
Previously, only constants were supported, now any TermArg may
be used.

http://www.acpica.org/bugzilla/show_bug.cgi?id=387
http://www.acpica.org/bugzilla/show_bug.cgi?id=393

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:28 -04:00
Bob Moore
57345ee6b8 ACPICA: Undo accidental checkin of not-fully-tested mutex changes
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:28 -04:00
Lin Ming
941f48bb46 ACPICA: Implemented full support for deferred execution for the TermArg string arguments for DataTableRegion
This enables forward references and full operand resolution for
the three string arguments. Similar to OperationRegion deferred
argument execution.)

http://www.acpica.org/bugzilla/show_bug.cgi?id=430

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:28 -04:00
Bob Moore
9aa6169f47 ACPICA: Fixed a problem with Index Fields where the Index register was incorrectly limited to a maximum of 32 bits
Now any size may be used.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:28 -04:00
Bob Moore
549f46044e ACPICA: Fixed a problem with AcpiGetDevices where the search of a branch of the device tree could be terminated prematurely
In accordance with the ACPI specification, the search is terminated
if a device is both not present and not functional (instead of
just not present.) Yakui Zhao.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:28 -04:00
Lin Ming
1cb2ef6606 ACPICA: Fixed a problem with CopyObject used in conjunction with the Index operator
The reference was incorrectly dereferenced before the copy. The
reference is now correctly copied.

http://bugzilla.kernel.org/show_bug.cgi?id=5391

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:28 -04:00
Lin Ming
e5bcc811f7 ACPICA: Fixed a problem with Index references passed as method arguments
References passed as arguments to control methods were dereferenced
immediately (before control was passed to the called method). The
references are now correctly passed directly to the called
method.

http://bugzilla.kernel.org/show_bug.cgi?id=5389

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:27 -04:00
Bob Moore
1f549a240c ACPICA: Fixed a problem with FromBCD and ToBCD with some compilers
On some compilers, the ShortDivide function worked incorrectly,
causing problems with the BCD functions with large input
values. (Truncation from 64-bit to 32-bit occurred.) Internal
http://www.acpica.org/bugzilla/show_bug.cgi?id=435

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:27 -04:00
Bob Moore
b160987df7 ACPICA: Fixes a problem with control method references within packages
Completes the package changes started with version 20071019.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:27 -04:00
Bob Moore
f2d69559b3 ACPICA: Cleanup of debug output
Improved output of object dump routine.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:27 -04:00
Bob Moore
b7f9f04228 ACPICA: Cosmetic changes only, no functional changes
Lint changes, fix compiler warnings, etc.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:27 -04:00
Bob Moore
1d18c05825 ACPICA: Cosmetic changes only, no functional changes
Lint changes, fix compiler warnings, etc.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:27 -04:00
Lin Ming
49718b1741 ACPICA: Added additional parameter validation for LoadTable
Implemented additional parameter validation for the LoadTable
operator. The length of the input strings SignatureString,
OemIdString, and OemTableId are now checked for maximum
lengths.

http://www.acpica.org/bugzilla/show_bug.cgi?id=582

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:26 -04:00
Bob Moore
9e41d93c97 ACPICA: Fixed a memory leak when Device or Thermal objects referenced in packages
Problem introduced in fix for Package references.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:26 -04:00
Bob Moore
7f4ac9f913 ACPICA: Fix for Load/LoadTable to specify load location
Fixed a problem with the Load and LoadTable operators where
the table location within the namespace was ignored. Instead,
the table was always loaded into the root or current scope.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:26 -04:00
Bob Moore
d8841647de ACPICA: Add error checks to prevent faults
Added additional error checking to prevent run-time faults.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:26 -04:00
Bob Moore
98af37fba9 ACPICA: Add a table checksum verify for Load operator
Added a table checksum verification for the Load operator, in
the case where the load is from a buffer.

http://www.acpica.org/bugzilla/show_bug.cgi?id=578

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:25 -04:00
Bob Moore
a13b8460c5 ACPICA: Fix for memory leak related to DdbHandle objects
Fixed a memory leak where DdbHandle objects were not deleted
automatically at control method exit.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:25 -04:00
Bob Moore
61ce421bb7 ACPICA: Fix a fault when storing DdbHandle to Debug object
Fixed a problem with the Debug object where a store of a DdbHandle
reference object to the Debug object could cause a fault.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:25 -04:00
Bob Moore
5eb691805f ACPICA: Fix for fault if Load() fails
Fixed a problem with the Load operator when loading a table from
a buffer object. The input buffer was prematurely zeroed and/or
deleted.

http://www.acpica.org/bugzilla/show_bug.cgi?id=577

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:24 -04:00
Bob Moore
53cf174409 ACPICA: Fix for Alias operator to see target child objects
Fixed a problem with the Alias operator when the target of the
alias is a named ASL operator that opens a new scope -- Scope,
Device, PowerResource, Processor, and ThermalZone. In these cases,
any children of the original operator could not be accessed via
the alias, potentially causing unexpected AE_NOT_FOUND exceptions.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:24 -04:00
Lin Ming
14808822a9 ACPICA: Fix for namespace lookup problem
Fixed a problem where objects of certain types (Device,
ThermalZone, Processor, PowerResource) can be not found if they
are declared and referenced from within the same control method

http://www.acpica.org/bugzilla/show_bug.cgi?id=341.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:24 -04:00
Lin Ming
3e08e2d2d6 ACPICA: New interfaces for table event handlers
Designed and implemented new external interfaces to install and
remove handlers for ACPI table-related events. Current events that
are defined are LOAD and UNLOAD. These interfaces allow the host to
track ACPI tables as they are dynamically loaded and unloaded. See
AcpiInstallTableHandler and AcpiRemoveTableHandler.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:24 -04:00
Bob Moore
e20a679b4a ACPICA: Support for iASL - multiple files and wildcards
Implemented support to allow multiple files to be
compiled/disassembled in a single invocation. This includes
command line wildcard support for both the Windows and Unix
versions of the compiler. This feature simplifies the disassembly
and compilation of multiple ACPI tables in a single directory.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:23 -04:00
Bob Moore
6deb65dd9d ACPICA: Updated error message for dynamic method serialization
Added more information to make the message clearer.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:23 -04:00
Bob Moore
e5567afa5c ACPICA: Fix for update of the Global Lock Handle
Fixed a problem where the global lock handle was not properly
updated if a thread that acquired the global lock via
executing AML code then attempted to acquire the lock via the
AcpiAcquireGlobalLock interface.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:23 -04:00
Bob Moore
91d02132fe ACPICA: Fix for package reference counts
Prevents infinite loop of 'Large Reference Count' messages in
aslts-bdemo-b286 test.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:22 -04:00
Bob Moore
422f4f90a2 ACPICA: Increase maximum buffer size dumped to screen in buffer object dump
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:22 -04:00
Bob Moore
f02e9fa1ce ACPICA: Misc fixes for recent global lock code update
Fixes as a result of running full validation test suite.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:22 -04:00
Bob Moore
a69c77c720 ACPICA: Removed extraneous code
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:22 -04:00
Bob Moore
91e38d10b2 ACPICA: Update comments for acquire/release mutex interfaces
pdate comments for acquire/release mutex interfaces

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:22 -04:00
Bob Moore
4b6e16cf2b ACPICA: Avoid use of invalid pointers in returned object field
During operand evaluation, ensure that the ReturnObj field is
cleared on error and only valid pointers are stored there.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:21 -04:00
Bob Moore
4e3156b183 ACPICA: changed order of interpretation of operand objects
The interpreter now evaluates operands in the order that they
appear (both in the
 AML and ASL), instead of in reverse order. This previously
 caused subtle incompatibilities with the MS interpreter as well
 as being non-intuitive.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:21 -04:00
Bob Moore
ba886cd4ac ACPICA: Update for mutiple global lock acquisitions by same thread
Allows AcpiAcquireGlobalLock external interface to be called
multiple times by the
 same thread. Allows use of AML fields that require the global
 lock while the running AML is already holding the global lock.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:21 -04:00
Bob Moore
f654ecbfac ACPICA: Removed unused code
Handling of AML_NAME_OP as a Reference.Opcode is no longer
needed. Kernel bugzilla 2874

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:20 -04:00
Bob Moore
773069d480 ACPICA: Several fixes for internal method result stack
fixes STACK_OVERFLOW exception on nested method calls. internal
bugzilla 262 and 275.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22 14:29:20 -04:00
Linus Torvalds
e9b62693ae Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial: (24 commits)
  DOC:  A couple corrections and clarifications in USB doc.
  Generate a slightly more informative error msg for bad HZ
  fix typo "is" -> "if" in Makefile
  ext*: spelling fix prefered -> preferred
  DOCUMENTATION:  Use newer DEFINE_SPINLOCK macro in docs.
  KEYS:  Fix the comment to match the file name in rxrpc-type.h.
  RAID: remove trailing space from printk line
  DMA engine: typo fixes
  Remove unused MAX_NODES_SHIFT
  MAINTAINERS: Clarify access to OCFS2 development mailing list.
  V4L: Storage class should be before const qualifier (sn9c102)
  V4L: Storage class should be before const qualifier
  sonypi: Storage class should be before const qualifier
  intel_menlow: Storage class should be before const qualifier
  DVB: Storage class should be before const qualifier
  arm: Storage class should be before const qualifier
  ALSA: Storage class should be before const qualifier
  acpi: Storage class should be before const qualifier
  firmware_sample_driver.c: fix coding style
  MAINTAINERS: Add ati_remote2 driver
  ...

Fixed up trivial conflicts in firmware_sample_driver.c
2008-04-21 16:36:46 -07:00
Tobias Klauser
b299c22c8c acpi: Storage class should be before const qualifier
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
2008-04-21 22:24:53 +00:00
Mike Travis
f70316dace generic: use new set_cpus_allowed_ptr function
* Use new set_cpus_allowed_ptr() function added by previous patch,
    which instead of passing the "newly allowed cpus" cpumask_t arg
    by value,  pass it by pointer:

    -int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask)
    +int set_cpus_allowed_ptr(struct task_struct *p, const cpumask_t *new_mask)

  * Modify CPU_MASK_ALL

Depends on:
	[sched-devel]: sched: add new set_cpus_allowed_ptr function

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19 19:44:58 +02:00
Matthew Wilcox
f1241c87a1 Add down_timeout and change ACPI to use it
ACPI currently emulates a timeout for semaphores with calls to
down_trylock and sleep.  This produces horrible behaviour in terms of
fairness and excessive wakeups.  Now that we have a unified semaphore
implementation, adding a real down_trylock is almost trivial.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-17 10:42:46 -04:00
Chuck Ebbert
f0a37e0087 acpi: bus: check once more for an empty list after locking it
List could have become empty after the unlocked check that was made earlier,
so check again inside the lock.

Should fix https://bugzilla.redhat.com/show_bug.cgi?id=427765

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Cc: <stable@kernel.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-15 19:35:41 -07:00
Zhao Yakui
729b2bdbfa ACPI : Disable the device's ability to wake the sleeping system in the boot phase
In some machines some GPE is shared by several ACPI devices, for example:
sleep button, keyboard, mouse. At the same time one of them is
non-wake(runtime) device and the other are wake devices. In such case OSPM
should call the _PSW object to disable the device's ability to
wake the sleeping system in the boot phase.
Otherwise there will be ACPI interrupt flood triggered by the GPE input.

The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW.
So it is necessary to call _DSW object first. Only when it is not
present will the _PSW object used.

http://bugzilla.kernel.org/show_bug.cgi?id=10224

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui  <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-09 21:57:22 -04:00
Alok Kataria
ba62b07787 acpi: fix "buggy BIOS check" when CPUs are hot removed
Fixes a BUG in ACPI hotplugging.

processor_device_array[pr->id] needs to be set to NULL when removing a CPU.
Else the "buggy BIOS check" in acpi_processor_start mistakenly fires when a
CPU is removed from the system and then later re-added.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Dan Arai <arai@vmware.com>
Cc: Len Brown <lenb@kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-08 18:25:53 -07:00
Krzysztof Helt
bb070e4349 acpi thermal: fix result check
thermal_zone_device_register() uses the ERR_PTR macro on its return values.  A
correct check is to use the IS_ERR() macro.

The 2.6.25 kernels panic on Compaq AP550 without this patch as it has more
then 10 (THERMAL_MAX_TRIPS) trip points (there are 12).

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-08 18:25:52 -07:00
Linus Torvalds
797de7bdb2 Revert "ACPI: Ignore _BQC object when registering backlight device"
This reverts commit 7c0ea45be4 which
caused a regression with the backlight being set to off when a laptop
doesn't have a _BQC entry to query the actual backlight value.  The code
blindly then falls back on a value of 0.

See
	http://bugzilla.kernel.org/show_bug.cgi?id=10387
	http://lkml.org/lkml/2008/4/2/366

for details.

Bisected-and-reported-by: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Zhao Yakui <yakui.zhao@intel.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-05 12:14:13 -07:00
Rafael J. Wysocki
7731ce63d9 ACPI PM: Restore the 2.6.24 suspend ordering
Some time ago it turned out that our suspend code ordering broke some
NVidia-based systems that hung if _PTS was executed with one of the PCI
devices, specifically a USB controller, in a low power state.

Then, it was noticed that the suspend code ordering was not compliant
with ACPI 1.0, although it was compliant with ACPI 2.0 (and later), and
it was argued that the code had to be changed for that reason (ref.
http://bugzilla.kernel.org/show_bug.cgi?id=9528).

So we did, but evidently we did wrong, because it's now turning out that
some systems have been broken by this change. Refs:
	http://bugzilla.kernel.org/show_bug.cgi?id=10340
	https://bugzilla.novell.com/show_bug.cgi?id=374217#c16

[ I said at that time that something like this might happend, but the
  majority of people involved thought that it was improbable due to the
  necessity to preserve the compliance of hardware with ACPI 1.0. ]

This actually is a quite serious regression from 2.6.24.

Moreover, the ACPI 1.0 ordering of suspend code introduced another issue
that I have only noticed recently.  Namely, if the suspend of one of
devices fails, the already suspended devices will be resumed without
executing _WAK before, which leads to problems on some systems (for
example, in such situations thermal management is broken on my HP
nx6325).  Consequently, it also breaks suspend debugging on the affected
systems.

Note also, that the requirement to execute _PTS before suspending
devices does not really make sense, because the device in question may
be put into a low power state at run time for a reason unrelated to a
system-wide suspend.

For the reasons outlined above, the change of the suspend ordering
should be reverted, which is done by the patch below.

[ Felix Möller: "I am the reporter from the original Novell Bug:

	https://bugzilla.novell.com/show_bug.cgi?id=374217

  I just tried current git head (two hours ago) with the patch (the one
  from the beginning of this thread) from Rafael and without it.  With
  the patch my MacBook does suspend without it does not." ]

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Felix Möller <felix@derklecks.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-01 11:21:08 -07:00
Ingo Molnar
48d3d8263c revert "ACPI: drivers/acpi: elide a non-zero test on a result that is never 0"
Revert commit 1192aeb957 ("ACPI:
drivers/acpi: elide a non-zero test on a result that is never 0")
because it turns out that thermal_cooling_device_register() does
actually return NULL if CONFIG_THERMAL is turned off (then the routine
turns into a dummy inline routine in the header files that returns NULL
unconditionally).

This was found with randconfig testing, causing a crash during bootup:

  initcall 0x78878534 ran for 13 msecs: acpi_button_init+0x0/0x51()
  Calling initcall 0x78878585: acpi_fan_init+0x0/0x2c()
  BUG: unable to handle kernel NULL pointer dereference at 00000000
  IP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd
  *pde = 00000000
  Oops: 0000 [#1]
  Modules linked in:

  Pid: 1, comm: swapper Not tainted (2.6.25-rc7-sched-devel.git-x86-latest.git #14)
  EIP: 0060:[<782b8ad0>] EFLAGS: 00010246 CPU: 0
  EIP is at acpi_fan_add+0x7d/0xfd
  EAX: b787c718 EBX: b787c400 ECX: b782ceb4 EDX: 00000007
  ESI: 00000000 EDI: b787c6f4 EBP: b782cee0 ESP: b782cecc
   DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
  Process swapper (pid: 1, ti=b782c000 task=b7846000 task.ti=b782c000)
  Stack: b787c459 00000000 b787c400 78790888 b787c60c b782cef8 782b6fb8 ffffffda
         b787c60c 00000000 78790958 b782cf0c 783005d7 b787c60c 78790958 78790584
         b782cf1c 783007f6 b782cf28 00000000 b782cf40 782ffc4a 78790958 b794d558
  Call Trace:
   [<782b6fb8>] ? acpi_device_probe+0x3e/0xdb
   [<783005d7>] ? driver_probe_device+0x82/0xfc
   [<783007f6>] ? __driver_attach+0x3a/0x70
   [<782ffc4a>] ? bus_for_each_dev+0x3e/0x60
   [<7830048c>] ? driver_attach+0x14/0x16
   [<783007bc>] ? __driver_attach+0x0/0x70
   [<7830006a>] ? bus_add_driver+0x9d/0x1b0
   [<783008c3>] ? driver_register+0x47/0xa3
   [<7813db00>] ? timespec_to_ktime+0x9/0xc
   [<782b7331>] ? acpi_bus_register_driver+0x3a/0x3c
   [<78878592>] ? acpi_fan_init+0xd/0x2c
   [<78863656>] ? kernel_init+0xac/0x1f9
   [<788635aa>] ? kernel_init+0x0/0x1f9
   [<78114563>] ? kernel_thread_helper+0x7/0x10
   =======================
  Code: 6e 78 e8 57 44 e7 ff 58 e9 93 00 00 00 8b 55 f0 8d bb f4 02 00 00 80 4b 2d 10 8b 03 e8 87 cb ff ff 8d 83 18 03 00 00 80 63 2d ef <ff> 35 00 00 00 00 50 68 e8 9c 6e 78 e8 22 44 e7 ff b9 b6 9c 6e
  EIP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd SS:ESP 0068:b782cecc
  ---[ end trace 778e504de7e3b1e3 ]---
  Kernel panic - not syncing: Attempted to kill init!

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-28 10:16:53 -07:00
Julia Lawall
1192aeb957 ACPI: drivers/acpi: elide a non-zero test on a result that is never 0
The function thermal_cooling_device_register always returns either a valid
pointer or a value made with ERR_PTR, so a test for non-zero on the result
will always succeed.

The problem was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

//<smpl>
@a@
expression E, E1;
statement S,S1;
position p;
@@

E = thermal_cooling_device_register(...)
... when != E = E1
if@p (E) S else S1

@n@
position a.p;
expression E,E1;
statement S,S1;
@@

E = NULL
... when != E = E1
if@p (E) S else S1

@depends on !n@
expression E;
statement S,S1;
position a.p;
@@

* if@p (E)
  S else S1
//</smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-27 01:48:22 -04:00
Len Brown
86d9fc1293 Merge branches 'release', 'idle', 'redhat-bugzilla-436589', 'sbs' and 'video' into release 2008-03-26 22:50:09 -04:00
Venki Pallipadi
8e92b6605d cpuidle: fix 100% C0 statistics regression
commit 9b12e18cdc
'ACPI: cpuidle: Support C1 idle time accounting'
was implicated in a 100% C0 idle regression.
http://bugzilla.kernel.org/show_bug.cgi?id=10076

It pointed out a potential problem where the menu governor
may get confused by the C-state residency time from poll
idle or C1 idle, where this timing info is not accurate.
This inaccuracy is due to interrupts being handled
before we account for C-state exit.

Do not mark TIME_VALID for CO poll state.
Mark C1 time as valid only with the MWAIT (CSTATE_FFH) entry method.

This makes governors use the timing information only when it is correct and
eliminates any wrong policy decisions that may result from invalid timing
information.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-26 00:58:19 -04:00
Venki Pallipadi
996520c1fd ACPI: fix mis-merge -- invoke acpi_unlazy_tlb() only on C3 entry
This original patch
http://ussg.iu.edu/hypermail/linux/kernel/0712.2/1451.html
was intending to add acpi_unlazy_tlb() to acpi_idle_enter_bm(),
which is used for C3 entry.

But it was merged incorrectly as commmit

bde6f5f59c
'x86: voluntary leave_mm before entering ACPI C3'

so the call was instead added to acpi_idle_enter_simple()
(which is C2 entry routine), probably due to identical
context in that function.

Move the call back to acpi_idle_enter_bm().

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-26 00:40:41 -04:00
Zhang Rui
5c9fcb5dee ACPI: fix a regression of ACPI device driver autoloading
commit 3620f2f2f3 sets the cid of
ACPI video/dock/bay device and leaves the hid empty.
As a result, "modalias" should export the cid for
devices which don't have a hid.

ACPI Video driver is not autoloaded with
commit 3620f2f2f3 applied.
"cat /sys/.../device:03(acpi video bus)/modalias" shows nothing.

ACPI Video driver is autoloaded after revert that commit.
"cat /sys/.../LNXVIDEO:0x/modalias" shows "acpi:LNXVIDEO:"

ACPI Video driver is autoloaded with commit
3620f2f2f3 and this patch applied.
"cat /sys/.../device:03(acpi video bus)/modalias"
shows "acpi:LNXVIDEO:"

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-25 22:48:37 -04:00
Bjorn Helgaas
b97d480340 ACPI: fix Medion _PRT quirk (use "ISA_", not "ISA")
This fixes the builtin RTL8139 NIC on the Medion MD9580-F laptop.  The
BIOS reports the interrupt routing incorrectly.  I recently added a
quirk to work around this, and this patch fixes a typo in the quirk.

We pad every ACPI pathname component to four characters, so ".ISA." will
never match anything.  We need ".ISA_." instead.

Thank you Johann-Nikolaus Andreae <johann-nikolaus.andreae@nacs.de>
for patiently testing this patch.

See http://bugzilla.kernel.org/show_bug.cgi?id=4773

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-25 15:21:30 -07:00
Alexey Starikovskiy
ce52ddf58c ACPI: EC: Don't delete boot EC
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:52:04 -04:00
Alexey Starikovskiy
6d9e112063 ACPI: EC: Use default setup handler
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:51:29 -04:00
Alexey Starikovskiy
fa95ba04e6 ACPI: EC: Detect irq storm
Problem seems to be that hw fails to clear GPE after we service it and write 1
into corresponding bit. Thus, as soon as we get interrupts enabled again, we
receive a new one. Google gives too many results for "acer interrupt storm" for
this being one-broken-machine case.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9998

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:50:59 -04:00
Alexey Starikovskiy
223883b7aa ACPI: EC: Switch off GPE mode during suspend/resume
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:50:36 -04:00
Alexey Starikovskiy
b77d81b267 ACPI: EC: Replace broken controller workarounds with poll mode.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:49:48 -04:00
Alexey Starikovskiy
dc0e8490fe ACPI: EC: Improve debug output
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:48:46 -04:00
Alexey Starikovskiy
845625cdcb ACPI: EC: Add poll timer
If we can not use interrupt mode of EC for some reason, start polling
EC for events periodically.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:48:10 -04:00
Alexey Starikovskiy
e6e82a3087 ACPI: EC: Restore udelay in poll mode
This fixes keyboard event handling on some systems.

Note that this delay was thought unnecessary, and removed
from linux-2.6.20 with 50c1e1138c
'ACPI: ec: Drop udelay() from poll mode. Loop by reading status field instead.'

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-24 20:47:35 -04:00
Alexey Starikovskiy
d7a0e1f564 Revert "ACPI: EC: Handle IRQ storm on Acer laptops"
This reverts commit 2c81ce4c9c.

It caused several new troubles (eg suspend slowdown bisected down to
this patch by Pavel Machek), so just revert it for now.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Cc: Pavel Machek <pavel@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-18 21:32:24 -07:00
Len Brown
13d93924f1 Merge branches 'release' and 'dock' into release 2008-03-18 05:17:15 -04:00
Holger Macht
9171f83488 ACPI: Set flag DOCK_UNDOCKING when triggered via sysfs
begin_undock() is only called when triggered via a acpi notify handler
(pressing the undock button on the dock station), but complete_undock() is
always called after the eject. So if a undock is triggered through a sysfs
write, the flag DOCK_UNDOCKING has to be set for the dock station,
too. Otherwise this will freeze the system hard.

Signed-off-by: Holger Macht <hmacht@suse.de>
Acked-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18 05:16:38 -04:00
Alexey Starikovskiy
7642d21130 ACPI: SBS: remove typo from sbchc.c
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18 05:13:14 -04:00
Len Brown
d9ea1364d3 Merge branches 'release', 'asus', 'bugzilla-8573', 'bugzilla-9995', 'bugzilla-10272', 'lockdep' and 'thermal' into release 2008-03-18 04:52:57 -04:00
Len Brown
77321e624b Revert "ACPI: video: Ignore devices that aren't present in hardware"
This reverts commit 0119509c4f.

http://bugzilla.kernel.org/show_bug.cgi?id=9995

Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18 04:04:35 -04:00
Julia Lawall
abc5a87f4e asus_acpi: remove misleading mask
led_out is boolean, so there is no functional change here,
but apparently an extra mask with 1 caused some style checkers
to flag this as logic bug.

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-18 02:31:34 -04:00
Len Brown
f0d6752c9f Revert "ACPI: video: Ignore ACPI video devices that aren't present in hardware"
This reverts commit 3fa2cdcc45.

http://bugzilla.kernel.org/show_bug.cgi?id=9995

Signed-off-by: Len Brown <len.brown>
2008-03-18 01:43:53 -04:00
Alexey Starikovskiy
b8a1bdb149 ACPI: battery: Don't return -EFAIL on broken packages.
Acer BIOS has a bug which is exposed when a dead battery is present.

The package template that is used to describe battery status is
over-written with sane values when the battery is live.
But when the batter is dead, a bogus reference in the template
is used.  In this case, Linux returns a fault, when instead
it should simply return that it doesn't know the missing value.

http://bugzilla.kernel.org/show_bug.cgi?id=8573
http://bugzilla.kernel.org/show_bug.cgi?id=10202

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-17 22:37:42 -04:00
Linus Torvalds
9a9e0d6855 ACPI: Remove ACPI_CUSTOM_DSDT_INITRD option
This essentially reverts commit 71fc47a9ad
("ACPI: basic initramfs DSDT override support"), because the code simply
isn't ready.

It did ugly things to the init sequence to populate the rootfs image
early, but that just ended up showing other problems with the whole
approach.  The fact is, the VFS layer simply isn't initialized this
early, and the relevant ACPI code should either run much later, or this
shouldn't be done at all.

For 2.6.25, we'll just pick the latter option.  We can revisit this
concept later if necessary.

Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Tilman Schmidt <tilman@imap.cc>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Cc: Len Brown <len.brown@intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Markus Gaugusch <dsdt@gaugusch.at>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-15 11:58:04 -07:00
Venki Pallipadi
71e93d1561 ACPI: lockdep warning on boot, 2.6.25-rc5
This avoids the harmless WARNING by lockdep in acpi_processor_idle().

The reason for WARNING is because at the depth of idle handling code,
some of the idle handlers disable interrupts, some times, while returning from
the idle handler. After return, acpi_processor_idle and few other routines
in the file did an unconditional local_irq_enable(). With LOCKDEP, enabling
irq when it is already enabled generates the below WARNING.

> > [    0.593038] ------------[ cut here ]------------
> > [    0.593267] WARNING: at kernel/lockdep.c:2035 trace_hardirqs_on+0xa0/0x115()
> > [    0.593596] Modules linked in:
> > [    0.593756] Pid: 0, comm: swapper Not tainted 2.6.25-rc5 #8
> > [    0.594017]
> > [    0.594017] Call Trace:
> > [    0.594216]  [<ffffffff80231663>] warn_on_slowpath+0x58/0x6b
> > [    0.594495]  [<ffffffff80495966>] ? _spin_unlock_irqrestore+0x38/0x47
> > [    0.594809]  [<ffffffff80329a86>] ? acpi_os_release_lock+0x9/0xb
> > [    0.595103]  [<ffffffff80337840>] ? acpi_set_register+0x161/0x173
> > [    0.595401]  [<ffffffff8034c8d4>] ? acpi_processor_idle+0x1de/0x546
> > [    0.595706]  [<ffffffff8020a23b>] ? default_idle+0x0/0x73
> > [    0.595970]  [<ffffffff8024fc0e>] trace_hardirqs_on+0xa0/0x115
> > [    0.596049]  [<ffffffff8034c6f6>] ? acpi_processor_idle+0x0/0x546
> > [    0.596346]  [<ffffffff8034c8d4>] acpi_processor_idle+0x1de/0x546
> > [    0.596642]  [<ffffffff8020a23b>] ? default_idle+0x0/0x73
> > [    0.596912]  [<ffffffff8034c6f6>] ? acpi_processor_idle+0x0/0x546
> > [    0.597209]  [<ffffffff8020a23b>] ? default_idle+0x0/0x73
> > [    0.597472]  [<ffffffff8020a355>] cpu_idle+0xa7/0xd1
> > [    0.597717]  [<ffffffff80485fa1>] rest_init+0x55/0x57
> > [    0.597957]  [<ffffffff8062fb49>] start_kernel+0x29d/0x2a8
> > [    0.598215]  [<ffffffff8062f1da>] _sinittext+0x1da/0x1e1
> > [    0.598464]
> > [    0.598546] ---[ end trace 778e504de7e3b1e3 ]---

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-14 00:05:48 -04:00
Len Brown
b4de123a0b Merge branches 'release', 'ejd', 'sony' and 'wmi' into release 2008-03-13 01:59:52 -04:00
Len Brown
c523aef0f7 Merge branches 'release', 'button-sysfs', 'misc', 'mismatch', 'randconfig' and 'toshiba' into release 2008-03-13 01:59:49 -04:00
Len Brown
160ff06b18 Merge branches 'release' and 'thermal' into release 2008-03-13 01:59:46 -04:00
Len Brown
1ca721cdb7 Merge branches 'release', 'bugzilla-8570', 'bugzilla-9966', 'bugzilla-9998', 'bugzilla-10100', 'bugzilla-10132', 'bugzilla-10138' and 'bugzilla-10206' into release 2008-03-13 01:59:45 -04:00
Zhang, Rui
5e012760df ACPI: thermal: show temperature in millidegree Celsius
as now required by the generic thermal I/F

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-13 01:49:11 -04:00
Johann Felix Soden
c8dc9de109 ACPI: buffer array too short in drivers/acpi/system.c
Since "ff_gbl_lock" has a length of 11 chars and is copied with sprintf
to char buffer[10], there is a problem. We need char buffer[12] because
of the closing zero byte.

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-12 17:57:22 -04:00
Thomas Renninger
b6a1638759 ACPICA: Warn if packages with invalid references are evaluated
And return an error to avoid NULL pointer access by the caller
Lin Ming's patch avoids corrupted mem access when
BIOS has invalid references included, the handle is now zero
instead of corrupted.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 23:57:20 -04:00
Bjorn Helgaas
391df5dce3 ACPI: add _PRT quirks to work around broken firmware
This patch works around incorrect _PRT (PCI interrupt routing)
information from firmware.  This does not fix any regressions
and can wait for the next kernel release.

On the Medion MD9580-F laptop, the BIOS says the builtin RTL8139
NIC interrupt at 00:09.0[A] is connected to \_SB.PCI0.ISA.LNKA, but
it's really connected to \_SB.PCI0.ISA.LNKB.  Before this patch,
the workaround was to use "pci=routeirq".  More details at
http://bugzilla.kernel.org/show_bug.cgi?id=4773.

On the Dell OptiPlex GX1, the BIOS says the PCI slot interrupt
00:0d[A] is connected to LNKB, but it's really connected to LNKA.
Before this patch, the workaround was to use "pci=routeirq".
Pierre Ossman tested a previous version of this patch and confirmed
that it fixed the problem.  More details at
http://bugzilla.kernel.org/show_bug.cgi?id=5044.

On the HP t5710 thin client, the BIOS says the builtin Radeon
video interrupt at 01:00[A] is connected to LNK1, but it's really
connected to LNK3.  The previous workaround was to use a custom
DSDT.  I tested this patch and verified that it fixes the problem.
More details at http://bugzilla.kernel.org/show_bug.cgi?id=10138.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 23:41:08 -04:00
Zhao Yakui
7c0ea45be4 ACPI: Ignore _BQC object when registering backlight device
According to acpi spec , the objects of  _BCL and _BCM are required if
integrated LCD is present and supports brightness level .The _BQC is
the optional object. So the _BQC object is ignored when the backlight device
is registered in ACPI video driver.

http://bugzilla.kernel.org/show_bug.cgi?id=10206

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui  <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 22:20:19 -04:00
Carlos Corbacho
a527f2d7fe ACPI: WMI: Clean up handling of spec violating data blocks
Acer violate the ACPI-WMI spec by declaring some of their data blocks as
expensive, but with no corresponding WCxx method. There is already some
workaround code in to handle the initial WCxx call (we just ignore a
failure here); but we need to properly check if the second, "clean up",
WCxx call is actually needed or not, rather than fail simply because it
isn't there.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 17:59:05 -04:00
Glauber Costa
d6f882e104 ACPI: use ACPI_DEBUG_PRINT instead of printk in acpi_processor_hotplug_notify()
For consistency, use ACPI_DEBUG_PRINT instead of printk in
acpi_processor_hotplug_notify() for BUS_CHECK and DEVICE_CHECK events

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 13:40:43 -04:00
Andrey Borzenkov
3b34e5232f ACPI: button: make real parent for input devices in device tree
Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 13:38:49 -04:00
arvidjaar@mail.ru
4db42c51ce toshiba_acpi: Enable autoloading
This adds aliases to enable autoloading of toishiba_acpi.  Two aliases are
defined - TOS6200 (for \\_SB_.VALD.GHCI) and TSO1900 (for \\_SB_.VALZ.GHCI).
This allows toishiba_acpi to be autoloaded on systems that provide those
devices.

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Olivier Blin <blino@mandriva.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 13:35:08 -04:00
Alexey Starikovskiy
2c81ce4c9c ACPI: EC: Handle IRQ storm on Acer laptops
On some Acer systems, the HW fails to clear the GPE source,
causing an interrupt storm.

So in EC interrupt mode, we count how many interrupts we
receive when waiting.  If we get more than 5, we give
up on interrupt mode and revert to polling mode.

Also, for polling mode to work on Acers, we need
to insert a delay.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 13:30:00 -04:00
Harvey Harrison
96b2dd1f1f ACPI: replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 01:58:41 -04:00
Jean Delvare
bd12935f04 ACPI: Fix a duplicate log level
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 00:52:19 -04:00
Len Brown
4af8e10a6c Revert "ACPI: EC: Use proper handle for boot EC"
This reverts commit 208c70a456.

http://bugzilla.kernel.org/show_bug.cgi?id=10100

Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 00:27:16 -04:00
Lin Ming
c8d16e27a3 ACPI: fix boot oops regression in thermal
Fix a memory overflow bug when copying
NULL internal package element object to external.

http://bugzilla.kernel.org/show_bug.cgi?id=10132

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11 00:15:19 -04:00
Zhang Rui
d0ce46f550 ACPI Exception (): AE_NOT_FOUND, Processor Device is not present (update)
update cfaf3747ff
ACPI: ACPI Exception (): AE_NOT_FOUND, Processor Device is not present

is_processor_present is only called in the processor hotplug case,
and _STA method is mandatory at this time.

We should ignore those processors that are disabled in the MADT
and don't have _STA methods.
Because they will never exist in this system.
For the processors that don't physically exist but can be
hot plugged later, we still need this debug info.

http://bugzilla.kernel.org/show_bug.cgi?id=8570

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-23 01:53:09 -05:00