diff options
Diffstat (limited to 'drivers/acpi/acpica/nsrepair.c')
| -rw-r--r-- | drivers/acpi/acpica/nsrepair.c | 118 |
1 files changed, 51 insertions, 67 deletions
diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index f8e71ea60319..accfdcfb7e62 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -1,46 +1,12 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: nsrepair - Repair for objects returned by predefined methods * + * Copyright (C) 2000 - 2025, Intel Corp. + * *****************************************************************************/ -/* - * Copyright (C) 2000 - 2013, Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - */ - #include <acpi/acpi.h> #include "accommon.h" #include "acnamesp.h" @@ -116,6 +82,11 @@ static const struct acpi_simple_repair_info acpi_object_repair_info[] = { ACPI_NOT_PACKAGE_ELEMENT, acpi_ns_convert_to_resource}, + /* Object reference conversions */ + + {"_DEP", ACPI_RTYPE_STRING, ACPI_ALL_PACKAGE_ELEMENTS, + acpi_ns_convert_to_reference}, + /* Unicode conversions */ {"_MLS", ACPI_RTYPE_STRING, 1, @@ -172,8 +143,8 @@ acpi_ns_simple_repair(struct acpi_evaluate_info *info, "Missing expected return value")); } - status = - predefined->object_converter(return_object, &new_object); + status = predefined->object_converter(info->node, return_object, + &new_object); if (ACPI_FAILURE(status)) { /* A fatal error occurred during a conversion */ @@ -207,15 +178,34 @@ acpi_ns_simple_repair(struct acpi_evaluate_info *info, * this predefined name. Either one return value is expected, or none, * for both methods and other objects. * - * Exit now if there is no return object. Warning if one was expected. + * Try to fix if there was no return object. Warning if failed to fix. */ if (!return_object) { - if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) { - ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, - ACPI_WARN_ALWAYS, - "Missing expected return value")); + if (expected_btypes) { + if (!(expected_btypes & ACPI_RTYPE_NONE) && + package_index != ACPI_NOT_PACKAGE_ELEMENT) { + ACPI_WARN_PREDEFINED((AE_INFO, + info->full_pathname, + ACPI_WARN_ALWAYS, + "Found unexpected NULL package element")); + + status = + acpi_ns_repair_null_element(info, + expected_btypes, + package_index, + return_object_ptr); + if (ACPI_SUCCESS(status)) { + return (AE_OK); /* Repair was successful */ + } + } - return (AE_AML_NO_RETURN_VALUE); + if (expected_btypes != ACPI_RTYPE_NONE) { + ACPI_WARN_PREDEFINED((AE_INFO, + info->full_pathname, + ACPI_WARN_ALWAYS, + "Missing expected return value")); + return (AE_AML_NO_RETURN_VALUE); + } } } @@ -263,27 +253,17 @@ acpi_ns_simple_repair(struct acpi_evaluate_info *info, return (AE_AML_OPERAND_TYPE); - object_repaired: +object_repaired: /* Object was successfully repaired */ if (package_index != ACPI_NOT_PACKAGE_ELEMENT) { - /* - * The original object is a package element. We need to - * decrement the reference count of the original object, - * for removing it from the package. - * - * However, if the original object was just wrapped with a - * package object as part of the repair, we don't need to - * change the reference count. - */ + + /* Update reference count of new object */ + if (!(info->return_flags & ACPI_OBJECT_WRAPPED)) { new_object->common.reference_count = return_object->common.reference_count; - - if (return_object->common.reference_count > 1) { - return_object->common.reference_count--; - } } ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, @@ -338,17 +318,20 @@ static const struct acpi_simple_repair_info *acpi_ns_match_simple_repair(struct this_name = acpi_object_repair_info; while (this_name->object_converter) { - if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) { + if (ACPI_COMPARE_NAMESEG(node->name.ascii, this_name->name)) { /* Check if we can actually repair this name/type combination */ if ((return_btype & this_name->unexpected_btypes) && - (package_index == this_name->package_index)) { + (this_name->package_index == + ACPI_ALL_PACKAGE_ELEMENTS + || package_index == this_name->package_index)) { return (this_name); } return (NULL); } + this_name++; } @@ -374,7 +357,7 @@ static const struct acpi_simple_repair_info *acpi_ns_match_simple_repair(struct ******************************************************************************/ acpi_status -acpi_ns_repair_null_element(struct acpi_evaluate_info * info, +acpi_ns_repair_null_element(struct acpi_evaluate_info *info, u32 expected_btypes, u32 package_index, union acpi_operand_object **return_object_ptr) @@ -448,7 +431,7 @@ acpi_ns_repair_null_element(struct acpi_evaluate_info * info, * RETURN: None. * * DESCRIPTION: Remove all NULL package elements from packages that contain - * a variable number of sub-packages. For these types of + * a variable number of subpackages. For these types of * packages, NULL elements can be safely removed. * *****************************************************************************/ @@ -469,7 +452,7 @@ acpi_ns_remove_null_elements(struct acpi_evaluate_info *info, /* * We can safely remove all NULL elements from these package types: * PTYPE1_VAR packages contain a variable number of simple data types. - * PTYPE2 packages contain a variable number of sub-packages. + * PTYPE2 packages contain a variable number of subpackages. */ switch (package_type) { case ACPI_PTYPE1_VAR: @@ -480,10 +463,10 @@ acpi_ns_remove_null_elements(struct acpi_evaluate_info *info, case ACPI_PTYPE2_MIN: case ACPI_PTYPE2_REV_FIXED: case ACPI_PTYPE2_FIX_VAR: - break; default: + case ACPI_PTYPE2_VAR_VAR: case ACPI_PTYPE1_FIXED: case ACPI_PTYPE1_OPTION: return; @@ -504,6 +487,7 @@ acpi_ns_remove_null_elements(struct acpi_evaluate_info *info, *dest = *source; dest++; } + source++; } @@ -555,8 +539,8 @@ acpi_ns_wrap_with_package(struct acpi_evaluate_info *info, ACPI_FUNCTION_NAME(ns_wrap_with_package); /* - * Create the new outer package and populate it. The new package will - * have a single element, the lone sub-object. + * Create the new outer package and populate it. The new + * package will have a single element, the lone sub-object. */ pkg_obj_desc = acpi_ut_create_package_object(1); if (!pkg_obj_desc) { |