diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile index 0e7d56185f6d..e7973bc16846 100644 --- a/drivers/acpi/acpica/Makefile +++ b/drivers/acpi/acpica/Makefile @@ -28,7 +28,7 @@ acpi-$(ACPI_FUTURE_USAGE) += hwtimer.o acpi-y += nsaccess.o nsload.o nssearch.o nsxfeval.o \ nsalloc.o nseval.o nsnames.o nsutils.o nsxfname.o \ nsdump.o nsinit.o nsobject.o nswalk.o nsxfobj.o \ - nsparse.o nspredef.o + nsparse.o nspredef.o nsrepair.o acpi-$(ACPI_FUTURE_USAGE) += nsdumpdv.o diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index a78e02f62d5e..908cfdd3b895 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -73,6 +73,14 @@ #define ACPI_NS_WALK_UNLOCK 0x01 #define ACPI_NS_WALK_TEMP_NODES 0x02 +/* Object is not a package element */ + +#define ACPI_NOT_PACKAGE_ELEMENT ACPI_UINT32_MAX + +/* Always emit warning message, not dependent on node flags */ + +#define ACPI_WARN_ALWAYS 0 + /* * nsinit - Namespace initialization */ @@ -261,6 +269,15 @@ acpi_status acpi_ns_get_attached_data(struct acpi_namespace_node *node, acpi_object_handler handler, void **data); +/* + * nsrepair - return object repair for predefined methods/objects + */ +acpi_status +acpi_ns_repair_object(struct acpi_predefined_data *data, + u32 expected_btypes, + u32 package_index, + union acpi_operand_object **return_object_ptr); + /* * nssearch - Namespace searching and entry */ diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c index 1dc1a4737aa9..e3f08dcb5275 100644 --- a/drivers/acpi/acpica/nspredef.c +++ b/drivers/acpi/acpica/nspredef.c @@ -91,12 +91,6 @@ static acpi_status acpi_ns_check_reference(struct acpi_predefined_data *data, union acpi_operand_object *return_object); -static acpi_status -acpi_ns_repair_object(struct acpi_predefined_data *data, - u32 expected_btypes, - u32 package_index, - union acpi_operand_object **return_object_ptr); - static void acpi_ns_get_expected_types(char *buffer, u32 expected_btypes); /* @@ -111,14 +105,6 @@ static const char *acpi_rtype_names[] = { "/Reference", }; -/* Object is not a package element */ - -#define ACPI_NOT_PACKAGE_ELEMENT ACPI_UINT32_MAX - -/* Always emit warning message, not dependent on node flags */ - -#define ACPI_WARN_ALWAYS 0 - /******************************************************************************* * * FUNCTION: acpi_ns_check_predefined_names @@ -580,8 +566,8 @@ acpi_ns_check_package(struct acpi_predefined_data *data, case ACPI_PTYPE2_COUNT: /* - * These types all return a single package that consists of a variable - * number of sub-packages + * These types all return a single package that consists of a + * variable number of sub-packages. */ for (i = 0; i < count; i++) { sub_package = *elements; @@ -977,108 +963,6 @@ acpi_ns_check_reference(struct acpi_predefined_data *data, return (AE_AML_OPERAND_TYPE); } -/******************************************************************************* - * - * FUNCTION: acpi_ns_repair_object - * - * PARAMETERS: Data - Pointer to validation data structure - * expected_btypes - Object types expected - * package_index - Index of object within parent package (if - * applicable - ACPI_NOT_PACKAGE_ELEMENT - * otherwise) - * return_object_ptr - Pointer to the object returned from the - * evaluation of a method or object - * - * RETURN: Status. AE_OK if repair was successful. - * - * DESCRIPTION: Attempt to repair/convert a return object of a type that was - * not expected. - * - ******************************************************************************/ - -static acpi_status -acpi_ns_repair_object(struct acpi_predefined_data *data, - u32 expected_btypes, - u32 package_index, - union acpi_operand_object **return_object_ptr) -{ - union acpi_operand_object *return_object = *return_object_ptr; - union acpi_operand_object *new_object; - acpi_size length; - - switch (return_object->common.type) { - case ACPI_TYPE_BUFFER: - - /* Does the method/object legally return a string? */ - - if (!(expected_btypes & ACPI_RTYPE_STRING)) { - return (AE_AML_OPERAND_TYPE); - } - - /* - * Have a Buffer, expected a String, convert. Use a to_string - * conversion, no transform performed on the buffer data. The best - * example of this is the _BIF method, where the string data from - * the battery is often (incorrectly) returned as buffer object(s). - */ - length = 0; - while ((length < return_object->buffer.length) && - (return_object->buffer.pointer[length])) { - length++; - } - - /* Allocate a new string object */ - - new_object = acpi_ut_create_string_object(length); - if (!new_object) { - return (AE_NO_MEMORY); - } - - /* - * Copy the raw buffer data with no transform. String is already NULL - * terminated at Length+1. - */ - ACPI_MEMCPY(new_object->string.pointer, - return_object->buffer.pointer, length); - - /* - * If the original object is a package element, we need to: - * 1. Set the reference count of the new object to match the - * reference count of the old object. - * 2. Decrement the reference count of the original object. - */ - if (package_index != ACPI_NOT_PACKAGE_ELEMENT) { - new_object->common.reference_count = - return_object->common.reference_count; - - if (return_object->common.reference_count > 1) { - return_object->common.reference_count--; - } - - ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, - data->node_flags, - "Converted Buffer to expected String at index %u", - package_index)); - } else { - ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, - data->node_flags, - "Converted Buffer to expected String")); - } - - /* Delete old object, install the new return object */ - - acpi_ut_remove_reference(return_object); - *return_object_ptr = new_object; - data->flags |= ACPI_OBJECT_REPAIRED; - return (AE_OK); - - default: - break; - } - - return (AE_AML_OPERAND_TYPE); -} - /******************************************************************************* * * FUNCTION: acpi_ns_get_expected_types diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c new file mode 100644 index 000000000000..b64751eacc53 --- /dev/null +++ b/drivers/acpi/acpica/nsrepair.c @@ -0,0 +1,151 @@ +/****************************************************************************** + * + * Module Name: nsrepair - Repair for objects returned by predefined methods + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2009, 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 +#include "accommon.h" +#include "acnamesp.h" +#include "acpredef.h" + +#define _COMPONENT ACPI_NAMESPACE +ACPI_MODULE_NAME("nsrepair") + +/******************************************************************************* + * + * FUNCTION: acpi_ns_repair_object + * + * PARAMETERS: Data - Pointer to validation data structure + * expected_btypes - Object types expected + * package_index - Index of object within parent package (if + * applicable - ACPI_NOT_PACKAGE_ELEMENT + * otherwise) + * return_object_ptr - Pointer to the object returned from the + * evaluation of a method or object + * + * RETURN: Status. AE_OK if repair was successful. + * + * DESCRIPTION: Attempt to repair/convert a return object of a type that was + * not expected. + * + ******************************************************************************/ +acpi_status +acpi_ns_repair_object(struct acpi_predefined_data *data, + u32 expected_btypes, + u32 package_index, + union acpi_operand_object **return_object_ptr) +{ + union acpi_operand_object *return_object = *return_object_ptr; + union acpi_operand_object *new_object; + acpi_size length; + + switch (return_object->common.type) { + case ACPI_TYPE_BUFFER: + + /* Does the method/object legally return a string? */ + + if (!(expected_btypes & ACPI_RTYPE_STRING)) { + return (AE_AML_OPERAND_TYPE); + } + + /* + * Have a Buffer, expected a String, convert. Use a to_string + * conversion, no transform performed on the buffer data. The best + * example of this is the _BIF method, where the string data from + * the battery is often (incorrectly) returned as buffer object(s). + */ + length = 0; + while ((length < return_object->buffer.length) && + (return_object->buffer.pointer[length])) { + length++; + } + + /* Allocate a new string object */ + + new_object = acpi_ut_create_string_object(length); + if (!new_object) { + return (AE_NO_MEMORY); + } + + /* + * Copy the raw buffer data with no transform. String is already NULL + * terminated at Length+1. + */ + ACPI_MEMCPY(new_object->string.pointer, + return_object->buffer.pointer, length); + + /* + * If the original object is a package element, we need to: + * 1. Set the reference count of the new object to match the + * reference count of the old object. + * 2. Decrement the reference count of the original object. + */ + if (package_index != ACPI_NOT_PACKAGE_ELEMENT) { + new_object->common.reference_count = + return_object->common.reference_count; + + if (return_object->common.reference_count > 1) { + return_object->common.reference_count--; + } + + ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, + data->node_flags, + "Converted Buffer to expected String at index %u", + package_index)); + } else { + ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, + data->node_flags, + "Converted Buffer to expected String")); + } + + /* Delete old object, install the new return object */ + + acpi_ut_remove_reference(return_object); + *return_object_ptr = new_object; + data->flags |= ACPI_OBJECT_REPAIRED; + return (AE_OK); + + default: + break; + } + + return (AE_AML_OPERAND_TYPE); +}