mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-08 17:18:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
688
drivers/acpi/acpica/psparse.c
Normal file
688
drivers/acpi/acpica/psparse.c
Normal file
|
|
@ -0,0 +1,688 @@
|
|||
/******************************************************************************
|
||||
*
|
||||
* Module Name: psparse - Parser top level AML parse routines
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2014, 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Parse the AML and build an operation tree as most interpreters,
|
||||
* like Perl, do. Parsing is done by hand rather than with a YACC
|
||||
* generated parser to tightly constrain stack and dynamic memory
|
||||
* usage. At the same time, parsing is kept flexible and the code
|
||||
* fairly compact by parsing based on a list of AML opcode
|
||||
* templates in aml_op_info[]
|
||||
*/
|
||||
|
||||
#include <acpi/acpi.h>
|
||||
#include "accommon.h"
|
||||
#include "acparser.h"
|
||||
#include "acdispat.h"
|
||||
#include "amlcode.h"
|
||||
#include "acinterp.h"
|
||||
|
||||
#define _COMPONENT ACPI_PARSER
|
||||
ACPI_MODULE_NAME("psparse")
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ps_get_opcode_size
|
||||
*
|
||||
* PARAMETERS: opcode - An AML opcode
|
||||
*
|
||||
* RETURN: Size of the opcode, in bytes (1 or 2)
|
||||
*
|
||||
* DESCRIPTION: Get the size of the current opcode.
|
||||
*
|
||||
******************************************************************************/
|
||||
u32 acpi_ps_get_opcode_size(u32 opcode)
|
||||
{
|
||||
|
||||
/* Extended (2-byte) opcode if > 255 */
|
||||
|
||||
if (opcode > 0x00FF) {
|
||||
return (2);
|
||||
}
|
||||
|
||||
/* Otherwise, just a single byte opcode */
|
||||
|
||||
return (1);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ps_peek_opcode
|
||||
*
|
||||
* PARAMETERS: parser_state - A parser state object
|
||||
*
|
||||
* RETURN: Next AML opcode
|
||||
*
|
||||
* DESCRIPTION: Get next AML opcode (without incrementing AML pointer)
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
u16 acpi_ps_peek_opcode(struct acpi_parse_state * parser_state)
|
||||
{
|
||||
u8 *aml;
|
||||
u16 opcode;
|
||||
|
||||
aml = parser_state->aml;
|
||||
opcode = (u16) ACPI_GET8(aml);
|
||||
|
||||
if (opcode == AML_EXTENDED_OP_PREFIX) {
|
||||
|
||||
/* Extended opcode, get the second opcode byte */
|
||||
|
||||
aml++;
|
||||
opcode = (u16) ((opcode << 8) | ACPI_GET8(aml));
|
||||
}
|
||||
|
||||
return (opcode);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ps_complete_this_op
|
||||
*
|
||||
* PARAMETERS: walk_state - Current State
|
||||
* op - Op to complete
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Perform any cleanup at the completion of an Op.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
|
||||
union acpi_parse_object * op)
|
||||
{
|
||||
union acpi_parse_object *prev;
|
||||
union acpi_parse_object *next;
|
||||
const struct acpi_opcode_info *parent_info;
|
||||
union acpi_parse_object *replacement_op = NULL;
|
||||
acpi_status status = AE_OK;
|
||||
|
||||
ACPI_FUNCTION_TRACE_PTR(ps_complete_this_op, op);
|
||||
|
||||
/* Check for null Op, can happen if AML code is corrupt */
|
||||
|
||||
if (!op) {
|
||||
return_ACPI_STATUS(AE_OK); /* OK for now */
|
||||
}
|
||||
|
||||
/* Delete this op and the subtree below it if asked to */
|
||||
|
||||
if (((walk_state->parse_flags & ACPI_PARSE_TREE_MASK) !=
|
||||
ACPI_PARSE_DELETE_TREE)
|
||||
|| (walk_state->op_info->class == AML_CLASS_ARGUMENT)) {
|
||||
return_ACPI_STATUS(AE_OK);
|
||||
}
|
||||
|
||||
/* Make sure that we only delete this subtree */
|
||||
|
||||
if (op->common.parent) {
|
||||
prev = op->common.parent->common.value.arg;
|
||||
if (!prev) {
|
||||
|
||||
/* Nothing more to do */
|
||||
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/*
|
||||
* Check if we need to replace the operator and its subtree
|
||||
* with a return value op (placeholder op)
|
||||
*/
|
||||
parent_info =
|
||||
acpi_ps_get_opcode_info(op->common.parent->common.
|
||||
aml_opcode);
|
||||
|
||||
switch (parent_info->class) {
|
||||
case AML_CLASS_CONTROL:
|
||||
|
||||
break;
|
||||
|
||||
case AML_CLASS_CREATE:
|
||||
/*
|
||||
* These opcodes contain term_arg operands. The current
|
||||
* op must be replaced by a placeholder return op
|
||||
*/
|
||||
replacement_op =
|
||||
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
|
||||
if (!replacement_op) {
|
||||
status = AE_NO_MEMORY;
|
||||
}
|
||||
break;
|
||||
|
||||
case AML_CLASS_NAMED_OBJECT:
|
||||
/*
|
||||
* These opcodes contain term_arg operands. The current
|
||||
* op must be replaced by a placeholder return op
|
||||
*/
|
||||
if ((op->common.parent->common.aml_opcode ==
|
||||
AML_REGION_OP)
|
||||
|| (op->common.parent->common.aml_opcode ==
|
||||
AML_DATA_REGION_OP)
|
||||
|| (op->common.parent->common.aml_opcode ==
|
||||
AML_BUFFER_OP)
|
||||
|| (op->common.parent->common.aml_opcode ==
|
||||
AML_PACKAGE_OP)
|
||||
|| (op->common.parent->common.aml_opcode ==
|
||||
AML_BANK_FIELD_OP)
|
||||
|| (op->common.parent->common.aml_opcode ==
|
||||
AML_VAR_PACKAGE_OP)) {
|
||||
replacement_op =
|
||||
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
|
||||
if (!replacement_op) {
|
||||
status = AE_NO_MEMORY;
|
||||
}
|
||||
} else
|
||||
if ((op->common.parent->common.aml_opcode ==
|
||||
AML_NAME_OP)
|
||||
&& (walk_state->pass_number <=
|
||||
ACPI_IMODE_LOAD_PASS2)) {
|
||||
if ((op->common.aml_opcode == AML_BUFFER_OP)
|
||||
|| (op->common.aml_opcode == AML_PACKAGE_OP)
|
||||
|| (op->common.aml_opcode ==
|
||||
AML_VAR_PACKAGE_OP)) {
|
||||
replacement_op =
|
||||
acpi_ps_alloc_op(op->common.
|
||||
aml_opcode);
|
||||
if (!replacement_op) {
|
||||
status = AE_NO_MEMORY;
|
||||
} else {
|
||||
replacement_op->named.data =
|
||||
op->named.data;
|
||||
replacement_op->named.length =
|
||||
op->named.length;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
|
||||
replacement_op =
|
||||
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
|
||||
if (!replacement_op) {
|
||||
status = AE_NO_MEMORY;
|
||||
}
|
||||
}
|
||||
|
||||
/* We must unlink this op from the parent tree */
|
||||
|
||||
if (prev == op) {
|
||||
|
||||
/* This op is the first in the list */
|
||||
|
||||
if (replacement_op) {
|
||||
replacement_op->common.parent =
|
||||
op->common.parent;
|
||||
replacement_op->common.value.arg = NULL;
|
||||
replacement_op->common.node = op->common.node;
|
||||
op->common.parent->common.value.arg =
|
||||
replacement_op;
|
||||
replacement_op->common.next = op->common.next;
|
||||
} else {
|
||||
op->common.parent->common.value.arg =
|
||||
op->common.next;
|
||||
}
|
||||
}
|
||||
|
||||
/* Search the parent list */
|
||||
|
||||
else
|
||||
while (prev) {
|
||||
|
||||
/* Traverse all siblings in the parent's argument list */
|
||||
|
||||
next = prev->common.next;
|
||||
if (next == op) {
|
||||
if (replacement_op) {
|
||||
replacement_op->common.parent =
|
||||
op->common.parent;
|
||||
replacement_op->common.value.
|
||||
arg = NULL;
|
||||
replacement_op->common.node =
|
||||
op->common.node;
|
||||
prev->common.next =
|
||||
replacement_op;
|
||||
replacement_op->common.next =
|
||||
op->common.next;
|
||||
next = NULL;
|
||||
} else {
|
||||
prev->common.next =
|
||||
op->common.next;
|
||||
next = NULL;
|
||||
}
|
||||
}
|
||||
prev = next;
|
||||
}
|
||||
}
|
||||
|
||||
cleanup:
|
||||
|
||||
/* Now we can actually delete the subtree rooted at Op */
|
||||
|
||||
acpi_ps_delete_parse_tree(op);
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ps_next_parse_state
|
||||
*
|
||||
* PARAMETERS: walk_state - Current state
|
||||
* op - Current parse op
|
||||
* callback_status - Status from previous operation
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Update the parser state based upon the return exception from
|
||||
* the parser callback.
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status
|
||||
acpi_ps_next_parse_state(struct acpi_walk_state *walk_state,
|
||||
union acpi_parse_object *op,
|
||||
acpi_status callback_status)
|
||||
{
|
||||
struct acpi_parse_state *parser_state = &walk_state->parser_state;
|
||||
acpi_status status = AE_CTRL_PENDING;
|
||||
|
||||
ACPI_FUNCTION_TRACE_PTR(ps_next_parse_state, op);
|
||||
|
||||
switch (callback_status) {
|
||||
case AE_CTRL_TERMINATE:
|
||||
/*
|
||||
* A control method was terminated via a RETURN statement.
|
||||
* The walk of this method is complete.
|
||||
*/
|
||||
parser_state->aml = parser_state->aml_end;
|
||||
status = AE_CTRL_TERMINATE;
|
||||
break;
|
||||
|
||||
case AE_CTRL_BREAK:
|
||||
|
||||
parser_state->aml = walk_state->aml_last_while;
|
||||
walk_state->control_state->common.value = FALSE;
|
||||
status = AE_CTRL_BREAK;
|
||||
break;
|
||||
|
||||
case AE_CTRL_CONTINUE:
|
||||
|
||||
parser_state->aml = walk_state->aml_last_while;
|
||||
status = AE_CTRL_CONTINUE;
|
||||
break;
|
||||
|
||||
case AE_CTRL_PENDING:
|
||||
|
||||
parser_state->aml = walk_state->aml_last_while;
|
||||
break;
|
||||
|
||||
#if 0
|
||||
case AE_CTRL_SKIP:
|
||||
|
||||
parser_state->aml = parser_state->scope->parse_scope.pkg_end;
|
||||
status = AE_OK;
|
||||
break;
|
||||
#endif
|
||||
|
||||
case AE_CTRL_TRUE:
|
||||
/*
|
||||
* Predicate of an IF was true, and we are at the matching ELSE.
|
||||
* Just close out this package
|
||||
*/
|
||||
parser_state->aml = acpi_ps_get_next_package_end(parser_state);
|
||||
status = AE_CTRL_PENDING;
|
||||
break;
|
||||
|
||||
case AE_CTRL_FALSE:
|
||||
/*
|
||||
* Either an IF/WHILE Predicate was false or we encountered a BREAK
|
||||
* opcode. In both cases, we do not execute the rest of the
|
||||
* package; We simply close out the parent (finishing the walk of
|
||||
* this branch of the tree) and continue execution at the parent
|
||||
* level.
|
||||
*/
|
||||
parser_state->aml = parser_state->scope->parse_scope.pkg_end;
|
||||
|
||||
/* In the case of a BREAK, just force a predicate (if any) to FALSE */
|
||||
|
||||
walk_state->control_state->common.value = FALSE;
|
||||
status = AE_CTRL_END;
|
||||
break;
|
||||
|
||||
case AE_CTRL_TRANSFER:
|
||||
|
||||
/* A method call (invocation) -- transfer control */
|
||||
|
||||
status = AE_CTRL_TRANSFER;
|
||||
walk_state->prev_op = op;
|
||||
walk_state->method_call_op = op;
|
||||
walk_state->method_call_node =
|
||||
(op->common.value.arg)->common.node;
|
||||
|
||||
/* Will return value (if any) be used by the caller? */
|
||||
|
||||
walk_state->return_used =
|
||||
acpi_ds_is_result_used(op, walk_state);
|
||||
break;
|
||||
|
||||
default:
|
||||
|
||||
status = callback_status;
|
||||
if ((callback_status & AE_CODE_MASK) == AE_CODE_CONTROL) {
|
||||
status = AE_OK;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_ps_parse_aml
|
||||
*
|
||||
* PARAMETERS: walk_state - Current state
|
||||
*
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Parse raw AML and return a tree of ops
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
|
||||
{
|
||||
acpi_status status;
|
||||
struct acpi_thread_state *thread;
|
||||
struct acpi_thread_state *prev_walk_list = acpi_gbl_current_walk_list;
|
||||
struct acpi_walk_state *previous_walk_state;
|
||||
|
||||
ACPI_FUNCTION_TRACE(ps_parse_aml);
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
||||
"Entered with WalkState=%p Aml=%p size=%X\n",
|
||||
walk_state, walk_state->parser_state.aml,
|
||||
walk_state->parser_state.aml_size));
|
||||
|
||||
if (!walk_state->parser_state.aml) {
|
||||
return_ACPI_STATUS(AE_NULL_OBJECT);
|
||||
}
|
||||
|
||||
/* Create and initialize a new thread state */
|
||||
|
||||
thread = acpi_ut_create_thread_state();
|
||||
if (!thread) {
|
||||
if (walk_state->method_desc) {
|
||||
|
||||
/* Executing a control method - additional cleanup */
|
||||
|
||||
acpi_ds_terminate_control_method(walk_state->
|
||||
method_desc,
|
||||
walk_state);
|
||||
}
|
||||
|
||||
acpi_ds_delete_walk_state(walk_state);
|
||||
return_ACPI_STATUS(AE_NO_MEMORY);
|
||||
}
|
||||
|
||||
walk_state->thread = thread;
|
||||
|
||||
/*
|
||||
* If executing a method, the starting sync_level is this method's
|
||||
* sync_level
|
||||
*/
|
||||
if (walk_state->method_desc) {
|
||||
walk_state->thread->current_sync_level =
|
||||
walk_state->method_desc->method.sync_level;
|
||||
}
|
||||
|
||||
acpi_ds_push_walk_state(walk_state, thread);
|
||||
|
||||
/*
|
||||
* This global allows the AML debugger to get a handle to the currently
|
||||
* executing control method.
|
||||
*/
|
||||
acpi_gbl_current_walk_list = thread;
|
||||
|
||||
/*
|
||||
* Execute the walk loop as long as there is a valid Walk State. This
|
||||
* handles nested control method invocations without recursion.
|
||||
*/
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "State=%p\n", walk_state));
|
||||
|
||||
status = AE_OK;
|
||||
while (walk_state) {
|
||||
if (ACPI_SUCCESS(status)) {
|
||||
/*
|
||||
* The parse_loop executes AML until the method terminates
|
||||
* or calls another method.
|
||||
*/
|
||||
status = acpi_ps_parse_loop(walk_state);
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
||||
"Completed one call to walk loop, %s State=%p\n",
|
||||
acpi_format_exception(status), walk_state));
|
||||
|
||||
if (status == AE_CTRL_TRANSFER) {
|
||||
/*
|
||||
* A method call was detected.
|
||||
* Transfer control to the called control method
|
||||
*/
|
||||
status =
|
||||
acpi_ds_call_control_method(thread, walk_state,
|
||||
NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
status =
|
||||
acpi_ds_method_error(status, walk_state);
|
||||
}
|
||||
|
||||
/*
|
||||
* If the transfer to the new method method call worked, a new walk
|
||||
* state was created -- get it
|
||||
*/
|
||||
walk_state = acpi_ds_get_current_walk_state(thread);
|
||||
continue;
|
||||
} else if (status == AE_CTRL_TERMINATE) {
|
||||
status = AE_OK;
|
||||
} else if ((status != AE_OK) && (walk_state->method_desc)) {
|
||||
|
||||
/* Either the method parse or actual execution failed */
|
||||
|
||||
ACPI_ERROR_METHOD("Method parse/execution failed",
|
||||
walk_state->method_node, NULL,
|
||||
status);
|
||||
|
||||
/* Check for possible multi-thread reentrancy problem */
|
||||
|
||||
if ((status == AE_ALREADY_EXISTS) &&
|
||||
(!(walk_state->method_desc->method.
|
||||
info_flags & ACPI_METHOD_SERIALIZED))) {
|
||||
/*
|
||||
* Method is not serialized and tried to create an object
|
||||
* twice. The probable cause is that the method cannot
|
||||
* handle reentrancy. Mark as "pending serialized" now, and
|
||||
* then mark "serialized" when the last thread exits.
|
||||
*/
|
||||
walk_state->method_desc->method.info_flags |=
|
||||
ACPI_METHOD_SERIALIZED_PENDING;
|
||||
}
|
||||
}
|
||||
|
||||
/* We are done with this walk, move on to the parent if any */
|
||||
|
||||
walk_state = acpi_ds_pop_walk_state(thread);
|
||||
|
||||
/* Reset the current scope to the beginning of scope stack */
|
||||
|
||||
acpi_ds_scope_stack_clear(walk_state);
|
||||
|
||||
/*
|
||||
* If we just returned from the execution of a control method or if we
|
||||
* encountered an error during the method parse phase, there's lots of
|
||||
* cleanup to do
|
||||
*/
|
||||
if (((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) ==
|
||||
ACPI_PARSE_EXECUTE) || (ACPI_FAILURE(status))) {
|
||||
acpi_ds_terminate_control_method(walk_state->
|
||||
method_desc,
|
||||
walk_state);
|
||||
}
|
||||
|
||||
/* Delete this walk state and all linked control states */
|
||||
|
||||
acpi_ps_cleanup_scope(&walk_state->parser_state);
|
||||
previous_walk_state = walk_state;
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
||||
"ReturnValue=%p, ImplicitValue=%p State=%p\n",
|
||||
walk_state->return_desc,
|
||||
walk_state->implicit_return_obj, walk_state));
|
||||
|
||||
/* Check if we have restarted a preempted walk */
|
||||
|
||||
walk_state = acpi_ds_get_current_walk_state(thread);
|
||||
if (walk_state) {
|
||||
if (ACPI_SUCCESS(status)) {
|
||||
/*
|
||||
* There is another walk state, restart it.
|
||||
* If the method return value is not used by the parent,
|
||||
* The object is deleted
|
||||
*/
|
||||
if (!previous_walk_state->return_desc) {
|
||||
/*
|
||||
* In slack mode execution, if there is no return value
|
||||
* we should implicitly return zero (0) as a default value.
|
||||
*/
|
||||
if (acpi_gbl_enable_interpreter_slack &&
|
||||
!previous_walk_state->
|
||||
implicit_return_obj) {
|
||||
previous_walk_state->
|
||||
implicit_return_obj =
|
||||
acpi_ut_create_integer_object
|
||||
((u64) 0);
|
||||
if (!previous_walk_state->
|
||||
implicit_return_obj) {
|
||||
return_ACPI_STATUS
|
||||
(AE_NO_MEMORY);
|
||||
}
|
||||
}
|
||||
|
||||
/* Restart the calling control method */
|
||||
|
||||
status =
|
||||
acpi_ds_restart_control_method
|
||||
(walk_state,
|
||||
previous_walk_state->
|
||||
implicit_return_obj);
|
||||
} else {
|
||||
/*
|
||||
* We have a valid return value, delete any implicit
|
||||
* return value.
|
||||
*/
|
||||
acpi_ds_clear_implicit_return
|
||||
(previous_walk_state);
|
||||
|
||||
status =
|
||||
acpi_ds_restart_control_method
|
||||
(walk_state,
|
||||
previous_walk_state->return_desc);
|
||||
}
|
||||
if (ACPI_SUCCESS(status)) {
|
||||
walk_state->walk_type |=
|
||||
ACPI_WALK_METHOD_RESTART;
|
||||
}
|
||||
} else {
|
||||
/* On error, delete any return object or implicit return */
|
||||
|
||||
acpi_ut_remove_reference(previous_walk_state->
|
||||
return_desc);
|
||||
acpi_ds_clear_implicit_return
|
||||
(previous_walk_state);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Just completed a 1st-level method, save the final internal return
|
||||
* value (if any)
|
||||
*/
|
||||
else if (previous_walk_state->caller_return_desc) {
|
||||
if (previous_walk_state->implicit_return_obj) {
|
||||
*(previous_walk_state->caller_return_desc) =
|
||||
previous_walk_state->implicit_return_obj;
|
||||
} else {
|
||||
/* NULL if no return value */
|
||||
|
||||
*(previous_walk_state->caller_return_desc) =
|
||||
previous_walk_state->return_desc;
|
||||
}
|
||||
} else {
|
||||
if (previous_walk_state->return_desc) {
|
||||
|
||||
/* Caller doesn't want it, must delete it */
|
||||
|
||||
acpi_ut_remove_reference(previous_walk_state->
|
||||
return_desc);
|
||||
}
|
||||
if (previous_walk_state->implicit_return_obj) {
|
||||
|
||||
/* Caller doesn't want it, must delete it */
|
||||
|
||||
acpi_ut_remove_reference(previous_walk_state->
|
||||
implicit_return_obj);
|
||||
}
|
||||
}
|
||||
|
||||
acpi_ds_delete_walk_state(previous_walk_state);
|
||||
}
|
||||
|
||||
/* Normal exit */
|
||||
|
||||
acpi_ex_release_all_mutexes(thread);
|
||||
acpi_ut_delete_generic_state(ACPI_CAST_PTR
|
||||
(union acpi_generic_state, thread));
|
||||
acpi_gbl_current_walk_list = prev_walk_list;
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue