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path: root/drivers/acpi/utilities
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2008-10-22ACPICA: Remove unused ACPI register bit definitionLin Ming
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>
2008-10-22ACPICA: Cleanup for internal Reference ObjectBob Moore
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>
2008-10-22ACPICA: Improve object conversion error messagesBob Moore
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>
2008-10-22ACPICA: Add function to decode reference obj types to stringsBob Moore
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>
2008-10-22ACPICA: Return status from global init functionYi Yang
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>
2008-08-15ACPICA: Additional error checking for pathname utilitiesBob Moore
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>
2008-08-15ACPICA: Fix memory leak when deleting thermal/processor objectsBob Moore
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>
2008-07-22acpi: fix crash in core ACPI code, triggered by CONFIG_ACPI_PCI_SLOT=yIngo Molnar
-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 | 8344b568f5bdc7ee1bba909de3294c6348c36056 is first bad commit | commit 8344b568f5bdc7ee1bba909de3294c6348c36056 | 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>
2008-07-16ACPICA: Fix mutex debug code for wrong loop termination valueBob Moore
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>
2008-07-16ACPICA: Add const qualifier for appropriate string constantsBob Moore
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>
2008-07-16ACPICA: Eliminate acpi_native_uint type v2Bob Moore
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>
2008-07-16ACPICA: Fix possible negative array index in acpi_ut_validate_exceptionBob Moore
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>
2008-07-16ACPICA: Fix for hang on GPE method invocationBob Moore
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>
2008-06-11ACPICA: fix stray va_end() caused by mis-mergeLen Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-30Merge branches 'release', 'acpica', 'bugzilla-10224', 'bugzilla-9772', ↵Len Brown
'bugzilla-9916', 'ec', 'eeepc', 'idle', 'misc', 'pm-legacy', 'sysfs-links-2.6.26', 'thermal', 'thinkpad' and 'video' into release
2008-04-24ACPI: GPE enabling should happen after EC installationAlexey Starikovskiy
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>
2008-04-23ACPICA: update Intel copyrightLen Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-22ACPICA: Update for new Notify valuesZhang Rui
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>
2008-04-22ACPICA: Fixes for external Reference ObjectsBob Moore
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>
2008-04-22ACPICA: Fix to handle NULL package elements correctlyLin Ming
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>
2008-04-22ACPICA: Fix for possible error when packages/buffers are passed to methods ↵Bob Moore
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>
2008-04-22ACPICA: Added new error messagesBob Moore
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>
2008-04-22ACPICA: Add va_end statements as appropriateBob Moore
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>
2008-04-22ACPICA: Fixes for Unload and DDBHandlesLin Ming
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>
2008-04-22ACPICA: Implemented full argument resolution support for the BankValue ↵Lin Ming
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>
2008-04-22ACPICA: Fixed a problem with FromBCD and ToBCD with some compilersBob Moore
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>
2008-04-22ACPICA: Cosmetic changes only, no functional changesBob Moore
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>
2008-04-22ACPICA: Fixed a memory leak when Device or Thermal objects referenced in ↵Bob Moore
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>
2008-04-22ACPICA: Fix for fault if Load() failsBob Moore
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>
2008-04-22ACPICA: New interfaces for table event handlersLin Ming
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>
2008-04-22ACPICA: Support for iASL - multiple files and wildcardsBob Moore
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>
2008-04-22ACPICA: Update for mutiple global lock acquisitions by same threadBob Moore
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>
2008-03-13Merge branches 'release', 'button-sysfs', 'misc', 'mismatch', 'randconfig' ↵Len Brown
and 'toshiba' into release
2008-03-11ACPI: replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-11ACPI: fix boot oops regression in thermalLin Ming
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>
2008-02-06ACPI: create /sys/firmware/acpi/interruptsLen Brown
See Documentation/ABI/testing/sysfs-firmware-acpi Based-on-original-patch-by: Luming Yu <luming.yu@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-03drivers/acpi/: Spelling fixesJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
2007-08-25ACPI: add dump_stack() to trace acpi_format_exception programming errorsAndrew Morton
Dump the stack so we can find the secretive caller to acpi_format_exception(). Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2007-07-23ACPI: autoload modules - ACPICA modificationsThomas Renninger
Define standardized HIDs - Rename current acpi_device_id to acpica_device_id Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-07-22Pull osi into release branchLen Brown
2007-07-03ACPICA: Update _OSI string listBob Moore
Latest update for the Windows strings, with comments. Removed unused strings. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-18ACPICA: fix error path in new external package objects as method argumentsMyron Stowe
In the routine acpi_ut_create_package_object(), if the ACPI_ALLOCATE_ZEROED() fails then ACPI_FREE(package_desc) is called as part of the cleanup. This should instead be acpi_ut_remove_reference(package_desc) in order to remove the reference acquired from acpi_ut_create_internal_object() [see the routine acpi_ut_create_buffer_object() as an example of proper functionality]. Signed-off-by: Myron Stowe <myron.stowe@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-02Pull osi-now into release branchLen Brown
2007-06-02ACPICA: Support for external package objects as method argumentsBob Moore
Implemented support to allow Package objects to be passed as method arguments to the acpi_evaluate_object interface. Previously, this would return an AE_NOT_IMPLEMENTED exception. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-05-30ACPI: add __init to acpi_initialize_subsystem()Len Brown
Add __init to: acpi_initialize_subsystem() (and un-export it) acpi_os_initialize() Add __initdata to: acpi_osl_dmi_table[] Signed-off-by: Len Brown <len.brown@intel.com>
2007-05-30ACPI: Make _OSI(Linux) a special caseLen Brown
_OSI("Linux") is like _OS("Linux"), it is ill-defined and virtually no BIOS vendors test interaction with it. As a result, it can do more damage than good because it causes the BIOS to follow un-tested paths. Recently, several machines have turned up that erroneously test this string in a way which causes them to _not_ test other compatibility strings, including the ZI9 and Toshiba. So it appears that this bad code has made it into a BIOS vendor's reference BIOS. Linux has no choice but to stop advertising compatibility with _OSI string "Linux" - as there are an unbounded number of possible incompatibilities going forward. But some BIOSes have already shipped which do use it for things like conditionally re-enabling video on resume from S3. (Too bad they didn't do that unconditionally) Add special case code for _OSI(Linux) Squawk to dmesg if _OSI(Linux) is requested Add DMI list both to enable and disable _OSI(Linux) But for now, keep the default enabled via #define OSI_LINUX_ENABLED. http://bugzilla.kernel.org/show_bug.cgi?id=7787 Signed-off-by: Len Brown <len.brown@intel.com>
2007-05-29ACPI: extend "acpi_osi=" boot optionLen Brown
The boot option "acpi_osi=" has always disabled Linux _OSI support, thus disabling all OS Interface strings which are advertised by Linux to the BIOS. Now... acpi_osi="string" adds the interface string, and acpi_osi="!string" invalidates the pre-defined interface string eg. acpi_osi="!Windows 2006" would disable Linux's claim of Vista compatibility. Signed-off-by: Len Brown <len.brown@intel.com>
2007-05-09ACPICA: LindentLen Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2007-05-09Revert "ACPICA: fix AML mutex re-entrancy"Len Brown
This reverts commit c0d127b56937c3e72c2b1819161d2f6718eee877. These changes to AML locking were made to allow Notify handlers to be called on the stack and not deadlock. However, that scheme turns out to be flawed and was reverted by the previous commit, so this commit restores the locking to it previous design. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-15ACPICA: fix AML mutex re-entrancyAlexey Starikovskiy
ACPI AML supports "serialized" methods which are protected by an implicit mutex. The mutex is re-entrant for that AML thread to allow recursion. However, Linux implements notify() by creating a new AML thread. So for systems where notify() re-enters a serialized method, deadlock results. The fix is to use the Linux thread_id as the key to allowing re-entrancy, not the AML thread pointer. http://bugzilla.kernel.org/show_bug.cgi?id=5534 Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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