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path: root/drivers/acpi/acpica/utdelete.c
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2022-01-27ACPICA: Utilities: Avoid deleting the same object twice in a rowRafael J. Wysocki
[ Upstream commit 1cdfe9e346b4c5509ffe19ccde880fd259d9f7a3 ] ACPICA commit c11af67d8f7e3d381068ce7771322f2b5324d687 If original_count is 0 in acpi_ut_update_ref_count (), acpi_ut_delete_internal_obj () is invoked for the target object, which is incorrect, because that object has been deleted once already and the memory allocated to store it may have been reclaimed and allocated for a different purpose by the host OS. Moreover, a confusing debug message following the "Reference Count is already zero, cannot decrement" warning is printed in that case. To fix this issue, make acpi_ut_update_ref_count () return after finding that original_count is 0 and printing the above warning. Link: https://github.com/acpica/acpica/commit/c11af67d Link: https://github.com/acpica/acpica/pull/652 Reported-by: Mark Asselstine <mark.asselstine@windriver.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-31ACPICA: Clean up context mutex during object deletionErik Kaneda
ACPICA commit bc43c878fd4ff27ba75b1d111b97ee90d4a82707 Fixes: c27f3d011b08 ("Fix race in GenericSerialBus (I2C) and GPIO OpRegion parameter handling") Link: https://github.com/acpica/acpica/commit/bc43c878 Reported-by: John Garry <john.garry@huawei.com> Reported-by: Xiang Chen <chenxiang66@hisilicon.com> Tested-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: Erik Kaneda <erik.kaneda@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-01-22ACPICA: fix -WfallthroughNick Desaulniers
ACPICA commit 4b9135f5774caa796ddf826448811e8e7f08ef2f GCC 7.1 gained -Wimplicit-fallthrough to warn on implicit fallthrough, as well as __attribute__((__fallthrough__)) and comments to explicitly denote that cases of fallthrough were intentional. Clang also supports this warning and statement attribute, but not the comment form. Robert Moore provides additional context about the lint comments being removed. They were for "an old version of PC-Lint, which we don't use anymore." Drop those. This will help us enable -Wimplicit-fallthrough throughout the Linux kernel. Suggested-by: Robert Moore <robert.moore@intel.com> Reported-by: Jon Hunter <jonathanh@nvidia.com> Link: https://github.com/acpica/acpica/commit/4b9135f5 Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Kaneda <erik.kaneda@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-07-27ACPICA: Do not increment operation_region reference counts for field unitsErik Kaneda
ACPICA commit e17b28cfcc31918d0db9547b6b274b09c413eb70 Object reference counts are used as a part of ACPICA's garbage collection mechanism. This mechanism keeps track of references to heap-allocated structures such as the ACPI operand objects. Recent server firmware has revealed that this reference count can overflow on large servers that declare many field units under the same operation_region. This occurs because each field unit declaration will add a reference count to the source operation_region. This change solves the reference count overflow for operation_regions objects by preventing fieldunits from incrementing their operation_region's reference count. Each operation_region's reference count will not be changed by named objects declared under the Field operator. During namespace deletion, the operation_region namespace node will be deleted and each fieldunit will be deleted without touching the deleted operation_region object. Link: https://github.com/acpica/acpica/commit/e17b28cf Signed-off-by: Erik Kaneda <erik.kaneda@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-03-30ACPICA: Fixes for acpiExec namespace init fileBob Moore
This is the result of squashing the following ACPICA commit ID's: 6803997e5b4f3635cea6610b51ff69e29d251de3 f31cdf8bfda22fe265c1a176d0e33d311c82a7f7 This change fixes several problems with the support for the acpi_exec namespace init file (-fi option). Specifically, it fixes AE_ALREADY_EXISTS errors, as well as various seg faults. Link: https://github.com/acpica/acpica/commit/f31cdf8b Link: https://github.com/acpica/acpica/commit/6803997e Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Kaneda <erik.kaneda@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-02-24ACPICA: ACPI 6.3: add PCC operation region support for AML interpreterErik Schmauss
ACPICA commit a4849944e80f97970e99843f4975850753584a4e This change adds PCC operation region support in the AML interpreter and a default handler for acpiexec. According to the specification, the PCC operation region performs a transaction when the COMD field is written. This allows ASL to write data to other fields before sending the data. In order to accommodate this protocol, a temorary buffer is added to the regionfield object to accumulate writes. If any offset that spans COMD is written, the temporary buffer is sent to the PCC operation region handler to be processed. This change also renames the PCC keyword to platform_comm_channel. Link: https://github.com/acpica/acpica/commit/a4849944 Reviewed-by: Kyle Pelton <kyle.d.pelton@intel.com> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-08-14ACPICA: Reference count: add additional debugging detailsErik Schmauss
Make reference counting diagnostics provide more information on what has happened. Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18ACPICA: adding SPDX headersErik Schmauss
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-02-21ACPICA: Update for some debug output. No functional changeBob Moore
ACPICA commit 3a08436fe3bff297a6de162252964e955946c7d3 Improve/simplify some of the debug messages. Link: https://github.com/acpica/acpica/commit/3a08436f Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-02-06ACPICA: All acpica: Update copyrights to 2018Bob Moore
including tool signons. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-09ACPICA: Source tree: Update copyright notices to 2017Bob Moore
ACPICA commit 16577e5265923f4999b4d2c0addb2343b18135e1 Affects all files. Link: https://github.com/acpica/acpica/commit/16577e52 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-01-02ACPICA: Utilities: Update debug outputBob Moore
ACPICA commit 082b5b3ee31f74735e166858eeda025288604a5a Enhancement of miscellaneous debug output. Link: https://github.com/acpica/acpica/commit/082b5b3e Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-15ACPICA: Additional 2016 copyright changesBob Moore
All tool/utility signons. Dual-license module header. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-01ACPICA: Core: Major update for code formatting, no functional changesBob Moore
ACPICA commit dfa394471f6c01b2ee9433dbc143ec70cb9bca72 Mostly indentation inconsistencies across the code. Split some long lines, etc. Link: https://github.com/acpica/acpica/commit/dfa39447 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-23ACPICA: Executer: Add back pointing reference of method operandLv Zheng
ACPICA commit 9dcd124e914e87495fbd1786d9484b962e0823e0 This patch adds back pointing reference of the namespace node for a method operand. The namespace node then can be used in acpi_ds_terminate_control_method() to obtain method full path to be used by tracing facilities. Lv Zheng. Link: https://github.com/acpica/acpica/commit/9dcd124e Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-02-05ACPICA: Update Copyright headers to 2015David E. Box
ACPICA commit 8990e73ab2aa15d6a0068b860ab54feff25bee36 Link: https://github.com/acpica/acpica/commit/8990e73a Signed-off-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-18ACPICA: Prevent infinite loops when traversing corrupted lists.Bob Moore
This change hardens the ACPICA code to detect circular linked object lists and prevent an infinite loop if such corruption exists. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-11ACPICA: Update ACPICA copyrights to 2014.Bob Moore
Update ACPICA copyrights to 2014. Includes all source headers and signons for the various tools. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31ACPICA: Linuxize: Change indentation of C labels.Lv Zheng
It is reported by kernel build test systems that all ACPICA source files in the kernel tree have incorrect label indentation. This patch changes default indent option used in the release process to fix this bug. Lv Zheng. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-16ACPICA: Standardize all switch() blocksChao Guan
After many years, different formatting for switch() has crept in. This change makes every switch block identical. Chao Guan. ACPICA bugzilla 997. References: https://bugs.acpica.org/show_bug.cgi?id=997 Signed-off-by: Chao Guan <chao.guan@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Add a lock to the internal object reference count mechanismBob Moore
Certain external interfaces need to update object references without holding the interpreter or namespace mutex objects. To prevent race conditions, add a spinlock around the increment and decrement of the reference counts for internal ACPI objects. Reported by Andriy Gapon (avg@FreeBSD.org). Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Andriy Gapon <avg@FreeBSD.org> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-12ACPICA: Remove FORCE_DELETE option for global reference count mechanismBob Moore
This option is not used and is obsolete. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-25ACPICA: Update ACPICA copyrights to 2013Bob Moore
Includes all source headers and signons for the various tools. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Lint changes, no functional change.Bob Moore
Some changes from lint. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Performance: Remove function tracing from critical allocation functions.Bob Moore
Tracing is no longer needed for many of the low-level function. Removing the trace mechanism from these functions improves performance a small amount, also simplifies the debug trace output. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Performance enhancement for ACPI package objects.Chao Guan
This change greatly increases the performance of package objects within the interpreter. It changes the processing of reference counts for packages by optimizing for the most common case where the package subobjects are either integers, strings, or buffers. Increases the performance of the ASLTS test suite by 1.5X. Chao Guan. ACPICA BZ 943. https://www.acpica.org/bugzilla/show_bug.cgi?id=943 Signed-off-by: Chao Guan <chao.guan@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2012-07-17ACPICA: AcpiSrc: Fix some translation issues for Linux conversionBob Moore
Fixes issues like this: i_aSL -> iASL 00-7_f -> 00-7F local_fADT -> local_FADT execute_oSI -> execute_OSI Also, in function headers, the parameters are now translated to lower case (with underscores if necessary.) 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>
2012-06-01ACPICA: Add support for multiple notify handlersBob Moore
This change adds support to allow multiple notify handlers on Device, ThermalZone, and Processor objects. Also re-worked and restructured the entire notify support code for handler installation, handler removal, notify event queuing, and notify dispatch to handler. Extends and updates original commit 3f0be67("ACPI / ACPICA: Multiple system notify handlers per device") by Rafael Wysocki. 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>
2012-01-17ACPICA: Update all copyrights to 2012Bob Moore
Update all copyrights to 2012. 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>
2012-01-17ACPICA: Add support for region address conflict checkingLin Ming
Allows drivers to determine if any memory or I/O addresses will conflict with addresses used by ACPI operation regions. Introduces a new interface, acpi_check_address_range. http://marc.info/?t=132251388700002&r=1&w=2 Reported-and-tested-by: Luca Tettamanti <kronos.it@gmail.com> 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>
2011-01-18ACPICA: Update all ACPICA copyrights and signons to 2011Bob Moore
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>
2010-04-20ACPICA: Standardize integer output for ACPICA warnings/errorsBob Moore
Always use 0x prefix for hex output, use %u for integer output (all integers are unsigned.) 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>
2010-01-22ACPICA: Update all ACPICA copyrights and signons to 2010Bob Moore
Add 2010 copyright to all module headers and signons, including the Linux header. This affects virtually every file in the ACPICA core subsystem, iASL compiler, and all utilities. 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>
2009-08-27ACPICA: fix leak of acpi_os_validate_addressLin Ming
http://bugzilla.kernel.org/show_bug.cgi?id=13620 If the dynamic region is created and added to resource list over and over again, it has the potential to be a memory leak by growing the list every time. This patch fixes the memory leak, as below 1) add a new field "count" to struct acpi_res_list. When inserting, if the region(addr, len) is already in the resource list, we just increase "count", otherwise, the region is inserted with count=1. When deleting, the "count" is decreased, if it's decreased to 0, the region is deleted from the resource list. With "count", the region with same address and length can only be inserted to the resource list once, so prevent potential memory leak. 2) add a new function acpi_os_invalidate_address, which is called when region is deleted. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-27ACPICA: Region deletion: Ensure region object is removed from handler listLin Ming
Prevents a possible fault when a dynamic operation region is deleted. ACPICA BZ 507. http://acpica.org/bugzilla/show_bug.cgi?id=507 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>
2009-03-26ACPICA: Remove ACPI_GET_OBJECT_TYPE macroBob Moore
Remove all instances of this obsolete macro, since it is now a simple reference to ->common.type. There were about 150 invocations of the macro across 41 files. ACPICA BZ 755. http://www.acpica.org/bugzilla/show_bug.cgi?id=755 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>
2009-01-09ACPICA: hide private headersLen Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-09ACPICA: create acpica/ directoryLen Brown
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
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