1 files changed, 0 insertions, 473 deletions
diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/executer/exmutex.c
deleted file mode 100644
index a8bf3d713e28..000000000000
--- a/drivers/acpi/executer/exmutex.c
+++ /dev/null
@@ -1,473 +0,0 @@
-
-/******************************************************************************
- *
- * Module Name: exmutex - ASL Mutex Acquire/Release functions
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, 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 <acpi/acinterp.h>
-#include <acpi/acevents.h>
-
-#define _COMPONENT          ACPI_EXECUTER
-ACPI_MODULE_NAME("exmutex")
-
-/* Local prototypes */
-static void
-acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
-		   struct acpi_thread_state *thread);
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_unlink_mutex
- *
- * PARAMETERS:  obj_desc            - The mutex to be unlinked
- *
- * RETURN:      None
- *
- * DESCRIPTION: Remove a mutex from the "AcquiredMutex" list
- *
- ******************************************************************************/
-
-void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc)
-{
-	struct acpi_thread_state *thread = obj_desc->mutex.owner_thread;
-
-	if (!thread) {
-		return;
-	}
-
-	/* Doubly linked list */
-
-	if (obj_desc->mutex.next) {
-		(obj_desc->mutex.next)->mutex.prev = obj_desc->mutex.prev;
-	}
-
-	if (obj_desc->mutex.prev) {
-		(obj_desc->mutex.prev)->mutex.next = obj_desc->mutex.next;
-	} else {
-		thread->acquired_mutex_list = obj_desc->mutex.next;
-	}
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_link_mutex
- *
- * PARAMETERS:  obj_desc        - The mutex to be linked
- *              Thread          - Current executing thread object
- *
- * RETURN:      None
- *
- * DESCRIPTION: Add a mutex to the "AcquiredMutex" list for this walk
- *
- ******************************************************************************/
-
-static void
-acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
-		   struct acpi_thread_state *thread)
-{
-	union acpi_operand_object *list_head;
-
-	list_head = thread->acquired_mutex_list;
-
-	/* This object will be the first object in the list */
-
-	obj_desc->mutex.prev = NULL;
-	obj_desc->mutex.next = list_head;
-
-	/* Update old first object to point back to this object */
-
-	if (list_head) {
-		list_head->mutex.prev = obj_desc;
-	}
-
-	/* Update list head */
-
-	thread->acquired_mutex_list = obj_desc;
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_acquire_mutex_object
- *
- * PARAMETERS:  time_desc           - Timeout in milliseconds
- *              obj_desc            - Mutex object
- *              Thread              - Current thread state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Acquire an AML mutex, low-level interface. Provides a common
- *              path that supports multiple acquires by the same thread.
- *
- * MUTEX:       Interpreter must be locked
- *
- * NOTE: This interface is called from three places:
- * 1) From acpi_ex_acquire_mutex, via an AML Acquire() operator
- * 2) From acpi_ex_acquire_global_lock when an AML Field access requires the
- *    global lock
- * 3) From the external interface, acpi_acquire_global_lock
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_acquire_mutex_object(u16 timeout,
-			     union acpi_operand_object *obj_desc,
-			     acpi_thread_id thread_id)
-{
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex_object, obj_desc);
-
-	if (!obj_desc) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/* Support for multiple acquires by the owning thread */
-
-	if (obj_desc->mutex.thread_id == thread_id) {
-		/*
-		 * The mutex is already owned by this thread, just increment the
-		 * acquisition depth
-		 */
-		obj_desc->mutex.acquisition_depth++;
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/* Acquire the mutex, wait if necessary. Special case for Global Lock */
-
-	if (obj_desc == acpi_gbl_global_lock_mutex) {
-		status = acpi_ev_acquire_global_lock(timeout);
-	} else {
-		status = acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
-						   timeout);
-	}
-
-	if (ACPI_FAILURE(status)) {
-
-		/* Includes failure from a timeout on time_desc */
-
-		return_ACPI_STATUS(status);
-	}
-
-	/* Acquired the mutex: update mutex object */
-
-	obj_desc->mutex.thread_id = thread_id;
-	obj_desc->mutex.acquisition_depth = 1;
-	obj_desc->mutex.original_sync_level = 0;
-	obj_desc->mutex.owner_thread = NULL;	/* Used only for AML Acquire() */
-
-	return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_acquire_mutex
- *
- * PARAMETERS:  time_desc           - Timeout integer
- *              obj_desc            - Mutex object
- *              walk_state          - Current method execution state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Acquire an AML mutex
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
-		      union acpi_operand_object *obj_desc,
-		      struct acpi_walk_state *walk_state)
-{
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex, obj_desc);
-
-	if (!obj_desc) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/* Must have a valid thread ID */
-
-	if (!walk_state->thread) {
-		ACPI_ERROR((AE_INFO,
-			    "Cannot acquire Mutex [%4.4s], null thread info",
-			    acpi_ut_get_node_name(obj_desc->mutex.node)));
-		return_ACPI_STATUS(AE_AML_INTERNAL);
-	}
-
-	/*
-	 * Current sync level must be less than or equal to the sync level of the
-	 * mutex. This mechanism provides some deadlock prevention
-	 */
-	if (walk_state->thread->current_sync_level > obj_desc->mutex.sync_level) {
-		ACPI_ERROR((AE_INFO,
-			    "Cannot acquire Mutex [%4.4s], current SyncLevel is too large (%d)",
-			    acpi_ut_get_node_name(obj_desc->mutex.node),
-			    walk_state->thread->current_sync_level));
-		return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
-	}
-
-	status = acpi_ex_acquire_mutex_object((u16) time_desc->integer.value,
-					      obj_desc,
-					      walk_state->thread->thread_id);
-	if (ACPI_SUCCESS(status) && obj_desc->mutex.acquisition_depth == 1) {
-
-		/* Save Thread object, original/current sync levels */
-
-		obj_desc->mutex.owner_thread = walk_state->thread;
-		obj_desc->mutex.original_sync_level =
-		    walk_state->thread->current_sync_level;
-		walk_state->thread->current_sync_level =
-		    obj_desc->mutex.sync_level;
-
-		/* Link the mutex to the current thread for force-unlock at method exit */
-
-		acpi_ex_link_mutex(obj_desc, walk_state->thread);
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_release_mutex_object
- *
- * PARAMETERS:  obj_desc            - The object descriptor for this op
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Release a previously acquired Mutex, low level interface.
- *              Provides a common path that supports multiple releases (after
- *              previous multiple acquires) by the same thread.
- *
- * MUTEX:       Interpreter must be locked
- *
- * NOTE: This interface is called from three places:
- * 1) From acpi_ex_release_mutex, via an AML Acquire() operator
- * 2) From acpi_ex_release_global_lock when an AML Field access requires the
- *    global lock
- * 3) From the external interface, acpi_release_global_lock
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_release_mutex_object(union acpi_operand_object *obj_desc)
-{
-	acpi_status status = AE_OK;
-
-	ACPI_FUNCTION_TRACE(ex_release_mutex_object);
-
-	if (obj_desc->mutex.acquisition_depth == 0) {
-		return (AE_NOT_ACQUIRED);
-	}
-
-	/* Match multiple Acquires with multiple Releases */
-
-	obj_desc->mutex.acquisition_depth--;
-	if (obj_desc->mutex.acquisition_depth != 0) {
-
-		/* Just decrement the depth and return */
-
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	if (obj_desc->mutex.owner_thread) {
-
-		/* Unlink the mutex from the owner's list */
-
-		acpi_ex_unlink_mutex(obj_desc);
-		obj_desc->mutex.owner_thread = NULL;
-	}
-
-	/* Release the mutex, special case for Global Lock */
-
-	if (obj_desc == acpi_gbl_global_lock_mutex) {
-		status = acpi_ev_release_global_lock();
-	} else {
-		acpi_os_release_mutex(obj_desc->mutex.os_mutex);
-	}
-
-	/* Clear mutex info */
-
-	obj_desc->mutex.thread_id = NULL;
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_release_mutex
- *
- * PARAMETERS:  obj_desc            - The object descriptor for this op
- *              walk_state          - Current method execution state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Release a previously acquired Mutex.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
-		      struct acpi_walk_state *walk_state)
-{
-	acpi_status status = AE_OK;
-
-	ACPI_FUNCTION_TRACE(ex_release_mutex);
-
-	if (!obj_desc) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/* The mutex must have been previously acquired in order to release it */
-
-	if (!obj_desc->mutex.owner_thread) {
-		ACPI_ERROR((AE_INFO,
-			    "Cannot release Mutex [%4.4s], not acquired",
-			    acpi_ut_get_node_name(obj_desc->mutex.node)));
-		return_ACPI_STATUS(AE_AML_MUTEX_NOT_ACQUIRED);
-	}
-
-	/*
-	 * The Mutex is owned, but this thread must be the owner.
-	 * Special case for Global Lock, any thread can release
-	 */
-	if ((obj_desc->mutex.owner_thread->thread_id !=
-	     walk_state->thread->thread_id)
-	    && (obj_desc != acpi_gbl_global_lock_mutex)) {
-		ACPI_ERROR((AE_INFO,
-			    "Thread %lX cannot release Mutex [%4.4s] acquired by thread %lX",
-			    (unsigned long)walk_state->thread->thread_id,
-			    acpi_ut_get_node_name(obj_desc->mutex.node),
-			    (unsigned long)obj_desc->mutex.owner_thread->
-			    thread_id));
-		return_ACPI_STATUS(AE_AML_NOT_OWNER);
-	}
-
-	/* Must have a valid thread ID */
-
-	if (!walk_state->thread) {
-		ACPI_ERROR((AE_INFO,
-			    "Cannot release Mutex [%4.4s], null thread info",
-			    acpi_ut_get_node_name(obj_desc->mutex.node)));
-		return_ACPI_STATUS(AE_AML_INTERNAL);
-	}
-
-	/*
-	 * The sync level of the mutex must be less than or equal to the current
-	 * sync level
-	 */
-	if (obj_desc->mutex.sync_level > walk_state->thread->current_sync_level) {
-		ACPI_ERROR((AE_INFO,
-			    "Cannot release Mutex [%4.4s], SyncLevel mismatch: mutex %d current %d",
-			    acpi_ut_get_node_name(obj_desc->mutex.node),
-			    obj_desc->mutex.sync_level,
-			    walk_state->thread->current_sync_level));
-		return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
-	}
-
-	status = acpi_ex_release_mutex_object(obj_desc);
-
-	if (obj_desc->mutex.acquisition_depth == 0) {
-
-		/* Restore the original sync_level */
-
-		walk_state->thread->current_sync_level =
-		    obj_desc->mutex.original_sync_level;
-	}
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_release_all_mutexes
- *
- * PARAMETERS:  Thread          - Current executing thread object
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Release all mutexes held by this thread
- *
- * NOTE: This function is called as the thread is exiting the interpreter.
- * Mutexes are not released when an individual control method is exited, but
- * only when the parent thread actually exits the interpreter. This allows one
- * method to acquire a mutex, and a different method to release it, as long as
- * this is performed underneath a single parent control method.
- *
- ******************************************************************************/
-
-void acpi_ex_release_all_mutexes(struct acpi_thread_state *thread)
-{
-	union acpi_operand_object *next = thread->acquired_mutex_list;
-	union acpi_operand_object *obj_desc;
-
-	ACPI_FUNCTION_ENTRY();
-
-	/* Traverse the list of owned mutexes, releasing each one */
-
-	while (next) {
-		obj_desc = next;
-		next = obj_desc->mutex.next;
-
-		obj_desc->mutex.prev = NULL;
-		obj_desc->mutex.next = NULL;
-		obj_desc->mutex.acquisition_depth = 0;
-
-		/* Release the mutex, special case for Global Lock */
-
-		if (obj_desc == acpi_gbl_global_lock_mutex) {
-
-			/* Ignore errors */
-
-			(void)acpi_ev_release_global_lock();
-		} else {
-			acpi_os_release_mutex(obj_desc->mutex.os_mutex);
-		}
-
-		/* Mark mutex unowned */
-
-		obj_desc->mutex.owner_thread = NULL;
-		obj_desc->mutex.thread_id = NULL;
-
-		/* Update Thread sync_level (Last mutex is the important one) */
-
-		thread->current_sync_level =
-		    obj_desc->mutex.original_sync_level;
-	}
-}