Validates predefined ACPI objects that appear in the namespace,
at the time they are evaluated. The argument count and the type of
the returned object are validated. The purpose of this validation
is to detect problems with the BIOS-exposed predefined ACPI objects
before the results are returned to the ACPI-related drivers.
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>
Predicate can be used for an implicit return value.
This change improves the implicit return mechanism to be more
compatible with the MS interpreter.
http://www.acpica.org/bugzilla/show_bug.cgi?id=349
Below AML code from http://bugzilla.kernel.org/show_bug.cgi?id=10686
Store(0x07D6, OSYS)
Method (_CRT, 0, Serialized)
{
If (LLess (OSYS, 0x07D6))
{
If (LEqual (\_SB.TJ85, Zero))
{
Return (Add (0x0AAC, Multiply (TPC, 0x0A)))
}
Else
{
Return (Add (0x0AAC, Multiply (TP85, 0x0A)))
}
}
}
Previously _CRT returns 0x07D6, now it returns 0 (predicate value of LLess)
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>
Fixed a couple memory leaks associated with "implicit return" objects
when the AML Interpreter slack mode is enabled.
http://www.acpica.org/bugzilla/show_bug.cgi?id=349
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>
Eliminate duplicate code.
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>
Fixed two possible memory leaks in the error exit paths of
acpi_ut_update_objerct_reference() and
acpi_ut_walk_package_tree()
These functions are similar in that they use a stack of state objects in
order to eliminate recursion. The stack must be fully deallocated
if an error occurs.
http://www.acpica.org/bugzilla/show_bug.cgi?id=383
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>
Fixes a crash if a memory allocation fails during the Op completion
routine acpi_ps_complete_this_op().
http://www.acpica.org/bugzilla/show_bug.cgi?id=492
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>
Removed the ACPI_BITREG_WAKE_ENABLE definition and entry in the
global register table. This bit does not exist and is unused.
http://www.acpica.org/bugzilla/show_bug.cgi?id=442
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>
Fixes a memory leak in the error exit path.
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>
Fix some sloppiness in the Reference object. No longer use AML
opcodes to differentiate the types, introduce new reference
Class. Cleanup the debug output code.
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>
Some formatting and spelling fixes.
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>
1) Add new field for use by DdbHandle (Value)
2) Use ACPI_CAST_INDIRECT_PTR to eliminate strict type warnings
3) Cleanup debug output
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>
Previously aborted with error if too few arguments were passed to
a control method via the external ACPICA interface. Now issue a
warning instead and continue. Handles the case where the method
inadvertently declares too many arguments, but does not actually
use the extra ones. Applies mainly to the predefined methods.
http://bugzilla.kernel.org/show_bug.cgi?id=11032
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>
Return AE_TYPE for objects that have no value and therefore
evaluation is undefined: Device, Event, Mutex, Region, Thermal,
and Scope.
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>
Removed ACPI_DB_WARN and ACPI_DB_ERROR. These debug levels were
made obsolete by the ACPI_WARNING and ACPI_ERROR/ACPI_EXCEPTION
interfaces. Also added ACPI_DB_EVENTS to correspond with the
existing ACPI_LV_EVENTS.
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>
ACPI_DB_ERROR and ACPI_DB_WARN were removed from ACPICA core.
So replace ACPI_DEBUG_PRINT((ACPI_DB_ERROR, ...) with printk(KERN_ERR PREFIX ...)
and ACPI_DEBUG_PRINT((ACPI_DB_WARN, ...) with printk(KERN_WARNING PREFIX ...)
We do not use ACPI_ERROR/ACPI_WARNING since they're not exported, see
-------------------------------------------------------------
commit 6468463abd
Author: Len Brown <len.brown@intel.com>
Date: Mon Jun 26 23:41:38 2006 -0400
ACPI: un-export ACPI_ERROR() -- use printk(KERN_ERR...)
Signed-off-by: Len Brown <len.brown@intel.com>
-------------------------------------------------------------
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Better error messages during object conversion from internal
to the external ACPI_OBJECT. Used for external calls to
acpi_evaluate_object.
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Created for improved error messages.
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Also update the debugger so that the correct number of arguments is
passed to the method. Prevents a warning message from the debugger.
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Fixes warning from exconfig.c on 64-bit build.
AK: This actually was fixed earlier in Linux, this just syncs with
AK: the version of the fix that went into the ACPCA codebase
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Examines the return object from a call to acpi_evaluate_object.
Any Index or RefOf references are automatically dereferenced in
an attempt to return something useful (these reference types
cannot be converted into an external ACPI_OBJECT.)
Lin Ming, Bob Moore.
http://bugzilla.kernel.org/show_bug.cgi?id=11105
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Return status from acpi_ut_init_globals. This is used by both
the kernel subsystem and the utilities such as iASL compiler.
The function could possibly fail when the caches are initialized.
Yang Yi.
Signed-off-by: Yi Yang <yi.y.yang@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>
Signed-off-by: Len Brown <len.brown@intel.com>
Split the ACPI table compare. First check that the lengths match
exactly. Then compare the data.
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Without this change, a table cannot be loaded again once it has
been loaded/unloaded one time. The current mechanism does not
unregister a table upon an unload. During a load, if the same
table is found, this no longer returns an exception.
http://www.acpica.org/bugzilla/show_bug.cgi?id=722
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Return AE_BAD_PARAMETER if input handle is invalid.
http://www.acpica.org/bugzilla/show_bug.cgi?id=474
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>
Signed-off-by: Len Brown <len.brown@intel.com>
Previously, dynamically loaded tables were simply mapped, but on some machines
this memory is corrupted after suspend. Now copy the table to a local buffer.
For OpRegion case, added checksum verify. Use the table length from the table header,
not the region length. For Buffer case, use the table length also.
http://bugzilla.kernel.org/show_bug.cgi?id=10734
Signed-off-by: Dennis Noordsij <dennis.noordsij@helsinki.fi>
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>
Signed-off-by: Len Brown <len.brown@intel.com>
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>
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>
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>
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>
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>
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>
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=9823http://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>
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>
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>
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>
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>
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>
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>
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>
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>
* '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
...
