Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1516 insertions, 0 deletions

diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
new file mode 100644
index 000000000000..f6598547389b
--- /dev/null
+++ b/drivers/acpi/utilities/utmisc.c
@@ -0,0 +1,1516 @@
+/*******************************************************************************
+ *
+ * Module Name: utmisc - common utility procedures
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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/acnamesp.h>
+
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utmisc")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_print_string
+ *
+ * PARAMETERS:  String          - Null terminated ASCII string
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
+ *              sequences.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_print_string (
+	char                            *string,
+	u8                              max_length)
+{
+	u32                             i;
+
+
+	if (!string) {
+		acpi_os_printf ("<\"NULL STRING PTR\">");
+		return;
+	}
+
+	acpi_os_printf ("\"");
+	for (i = 0; string[i] && (i < max_length); i++) {
+		/* Escape sequences */
+
+		switch (string[i]) {
+		case 0x07:
+			acpi_os_printf ("\\a");      /* BELL */
+			break;
+
+		case 0x08:
+			acpi_os_printf ("\\b");     /* BACKSPACE */
+			break;
+
+		case 0x0C:
+			acpi_os_printf ("\\f");     /* FORMFEED */
+			break;
+
+		case 0x0A:
+			acpi_os_printf ("\\n");     /* LINEFEED */
+			break;
+
+		case 0x0D:
+			acpi_os_printf ("\\r");     /* CARRIAGE RETURN*/
+			break;
+
+		case 0x09:
+			acpi_os_printf ("\\t");     /* HORIZONTAL TAB */
+			break;
+
+		case 0x0B:
+			acpi_os_printf ("\\v");     /* VERTICAL TAB */
+			break;
+
+		case '\'':                      /* Single Quote */
+		case '\"':                      /* Double Quote */
+		case '\\':                      /* Backslash */
+			acpi_os_printf ("\\%c", (int) string[i]);
+			break;
+
+		default:
+
+			/* Check for printable character or hex escape */
+
+			if (ACPI_IS_PRINT (string[i]))
+			{
+				/* This is a normal character */
+
+				acpi_os_printf ("%c", (int) string[i]);
+			}
+			else
+			{
+				/* All others will be Hex escapes */
+
+				acpi_os_printf ("\\x%2.2X", (s32) string[i]);
+			}
+			break;
+		}
+	}
+	acpi_os_printf ("\"");
+
+	if (i == max_length && string[i]) {
+		acpi_os_printf ("...");
+	}
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dword_byte_swap
+ *
+ * PARAMETERS:  Value           - Value to be converted
+ *
+ * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
+ *
+ ******************************************************************************/
+
+u32
+acpi_ut_dword_byte_swap (
+	u32                             value)
+{
+	union {
+		u32                         value;
+		u8                          bytes[4];
+	} out;
+
+	union {
+		u32                         value;
+		u8                          bytes[4];
+	} in;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	in.value = value;
+
+	out.bytes[0] = in.bytes[3];
+	out.bytes[1] = in.bytes[2];
+	out.bytes[2] = in.bytes[1];
+	out.bytes[3] = in.bytes[0];
+
+	return (out.value);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_set_integer_width
+ *
+ * PARAMETERS:  Revision            From DSDT header
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set the global integer bit width based upon the revision
+ *              of the DSDT.  For Revision 1 and 0, Integers are 32 bits.
+ *              For Revision 2 and above, Integers are 64 bits.  Yes, this
+ *              makes a difference.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_set_integer_width (
+	u8                              revision)
+{
+
+	if (revision <= 1) {
+		acpi_gbl_integer_bit_width = 32;
+		acpi_gbl_integer_nybble_width = 8;
+		acpi_gbl_integer_byte_width = 4;
+	}
+	else {
+		acpi_gbl_integer_bit_width = 64;
+		acpi_gbl_integer_nybble_width = 16;
+		acpi_gbl_integer_byte_width = 8;
+	}
+}
+
+
+#ifdef ACPI_DEBUG_OUTPUT
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_display_init_pathname
+ *
+ * PARAMETERS:  obj_handle          - Handle whose pathname will be displayed
+ *              Path                - Additional path string to be appended.
+ *                                      (NULL if no extra path)
+ *
+ * RETURN:      acpi_status
+ *
+ * DESCRIPTION: Display full pathname of an object, DEBUG ONLY
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_display_init_pathname (
+	u8                              type,
+	struct acpi_namespace_node      *obj_handle,
+	char                            *path)
+{
+	acpi_status                     status;
+	struct acpi_buffer              buffer;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	/* Only print the path if the appropriate debug level is enabled */
+
+	if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
+		return;
+	}
+
+	/* Get the full pathname to the node */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	status = acpi_ns_handle_to_pathname (obj_handle, &buffer);
+	if (ACPI_FAILURE (status)) {
+		return;
+	}
+
+	/* Print what we're doing */
+
+	switch (type) {
+	case ACPI_TYPE_METHOD:
+		acpi_os_printf ("Executing  ");
+		break;
+
+	default:
+		acpi_os_printf ("Initializing ");
+		break;
+	}
+
+	/* Print the object type and pathname */
+
+	acpi_os_printf ("%-12s %s", acpi_ut_get_type_name (type), (char *) buffer.pointer);
+
+	/* Extra path is used to append names like _STA, _INI, etc. */
+
+	if (path) {
+		acpi_os_printf (".%s", path);
+	}
+	acpi_os_printf ("\n");
+
+	ACPI_MEM_FREE (buffer.pointer);
+}
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_valid_acpi_name
+ *
+ * PARAMETERS:  Character           - The character to be examined
+ *
+ * RETURN:      1 if Character may appear in a name, else 0
+ *
+ * DESCRIPTION: Check for a valid ACPI name.  Each character must be one of:
+ *              1) Upper case alpha
+ *              2) numeric
+ *              3) underscore
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_valid_acpi_name (
+	u32                             name)
+{
+	char                            *name_ptr = (char *) &name;
+	char                            character;
+	acpi_native_uint                i;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	for (i = 0; i < ACPI_NAME_SIZE; i++) {
+		character = *name_ptr;
+		name_ptr++;
+
+		if (!((character == '_') ||
+			  (character >= 'A' && character <= 'Z') ||
+			  (character >= '0' && character <= '9'))) {
+			return (FALSE);
+		}
+	}
+
+	return (TRUE);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_valid_acpi_character
+ *
+ * PARAMETERS:  Character           - The character to be examined
+ *
+ * RETURN:      1 if Character may appear in a name, else 0
+ *
+ * DESCRIPTION: Check for a printable character
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_valid_acpi_character (
+	char                            character)
+{
+
+	ACPI_FUNCTION_ENTRY ();
+
+	return ((u8)   ((character == '_') ||
+			   (character >= 'A' && character <= 'Z') ||
+			   (character >= '0' && character <= '9')));
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_strtoul64
+ *
+ * PARAMETERS:  String          - Null terminated string
+ *              Base            - Radix of the string: 10, 16, or ACPI_ANY_BASE
+ *              ret_integer     - Where the converted integer is returned
+ *
+ * RETURN:      Status and Converted value
+ *
+ * DESCRIPTION: Convert a string into an unsigned value.
+ *              NOTE: Does not support Octal strings, not needed.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_strtoul64 (
+	char                            *string,
+	u32                             base,
+	acpi_integer                    *ret_integer)
+{
+	u32                             this_digit = 0;
+	acpi_integer                    return_value = 0;
+	acpi_integer                    quotient;
+
+
+	ACPI_FUNCTION_TRACE ("ut_stroul64");
+
+
+	if ((!string) || !(*string)) {
+		goto error_exit;
+	}
+
+	switch (base) {
+	case ACPI_ANY_BASE:
+	case 10:
+	case 16:
+		break;
+
+	default:
+		/* Invalid Base */
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	/* Skip over any white space in the buffer */
+
+	while (ACPI_IS_SPACE (*string) || *string == '\t') {
+		string++;
+	}
+
+	/*
+	 * If the input parameter Base is zero, then we need to
+	 * determine if it is decimal or hexadecimal:
+	 */
+	if (base == 0) {
+		if ((*string == '0') &&
+			(ACPI_TOLOWER (*(string + 1)) == 'x')) {
+			base = 16;
+			string += 2;
+		}
+		else {
+			base = 10;
+		}
+	}
+
+	/*
+	 * For hexadecimal base, skip over the leading
+	 * 0 or 0x, if they are present.
+	 */
+	if ((base == 16) &&
+		(*string == '0') &&
+		(ACPI_TOLOWER (*(string + 1)) == 'x')) {
+		string += 2;
+	}
+
+	/* Any string left? */
+
+	if (!(*string)) {
+		goto error_exit;
+	}
+
+	/* Main loop: convert the string to a 64-bit integer */
+
+	while (*string) {
+		if (ACPI_IS_DIGIT (*string)) {
+			/* Convert ASCII 0-9 to Decimal value */
+
+			this_digit = ((u8) *string) - '0';
+		}
+		else {
+			if (base == 10) {
+				/* Digit is out of range */
+
+				goto error_exit;
+			}
+
+			this_digit = (u8) ACPI_TOUPPER (*string);
+			if (ACPI_IS_XDIGIT ((char) this_digit)) {
+				/* Convert ASCII Hex char to value */
+
+				this_digit = this_digit - 'A' + 10;
+			}
+			else {
+				/*
+				 * We allow non-hex chars, just stop now, same as end-of-string.
+				 * See ACPI spec, string-to-integer conversion.
+				 */
+				break;
+			}
+		}
+
+		/* Divide the digit into the correct position */
+
+		(void) acpi_ut_short_divide ((ACPI_INTEGER_MAX - (acpi_integer) this_digit),
+				 base, &quotient, NULL);
+		if (return_value > quotient) {
+			goto error_exit;
+		}
+
+		return_value *= base;
+		return_value += this_digit;
+		string++;
+	}
+
+	/* All done, normal exit */
+
+	*ret_integer = return_value;
+	return_ACPI_STATUS (AE_OK);
+
+
+error_exit:
+	/* Base was set/validated above */
+
+	if (base == 10) {
+		return_ACPI_STATUS (AE_BAD_DECIMAL_CONSTANT);
+	}
+	else {
+		return_ACPI_STATUS (AE_BAD_HEX_CONSTANT);
+	}
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_strupr
+ *
+ * PARAMETERS:  src_string      - The source string to convert to
+ *
+ * RETURN:      src_string
+ *
+ * DESCRIPTION: Convert string to uppercase
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+char *
+acpi_ut_strupr (
+	char                            *src_string)
+{
+	char                            *string;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	/* Walk entire string, uppercasing the letters */
+
+	for (string = src_string; *string; ) {
+		*string = (char) ACPI_TOUPPER (*string);
+		string++;
+	}
+
+	return (src_string);
+}
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_mutex_initialize
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create the system mutex objects.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_mutex_initialize (
+	void)
+{
+	u32                             i;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_mutex_initialize");
+
+
+	/*
+	 * Create each of the predefined mutex objects
+	 */
+	for (i = 0; i < NUM_MUTEX; i++) {
+		status = acpi_ut_create_mutex (i);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	status = acpi_os_create_lock (&acpi_gbl_gpe_lock);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_mutex_terminate
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Delete all of the system mutex objects.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_mutex_terminate (
+	void)
+{
+	u32                             i;
+
+
+	ACPI_FUNCTION_TRACE ("ut_mutex_terminate");
+
+
+	/*
+	 * Delete each predefined mutex object
+	 */
+	for (i = 0; i < NUM_MUTEX; i++) {
+		(void) acpi_ut_delete_mutex (i);
+	}
+
+	acpi_os_delete_lock (acpi_gbl_gpe_lock);
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_mutex
+ *
+ * PARAMETERS:  mutex_iD        - ID of the mutex to be created
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a mutex object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_create_mutex (
+	acpi_mutex_handle               mutex_id)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE_U32 ("ut_create_mutex", mutex_id);
+
+
+	if (mutex_id > MAX_MUTEX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	if (!acpi_gbl_mutex_info[mutex_id].mutex) {
+		status = acpi_os_create_semaphore (1, 1,
+				  &acpi_gbl_mutex_info[mutex_id].mutex);
+		acpi_gbl_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED;
+		acpi_gbl_mutex_info[mutex_id].use_count = 0;
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_mutex
+ *
+ * PARAMETERS:  mutex_iD        - ID of the mutex to be deleted
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Delete a mutex object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_delete_mutex (
+	acpi_mutex_handle               mutex_id)
+{
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE_U32 ("ut_delete_mutex", mutex_id);
+
+
+	if (mutex_id > MAX_MUTEX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	status = acpi_os_delete_semaphore (acpi_gbl_mutex_info[mutex_id].mutex);
+
+	acpi_gbl_mutex_info[mutex_id].mutex = NULL;
+	acpi_gbl_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED;
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_acquire_mutex
+ *
+ * PARAMETERS:  mutex_iD        - ID of the mutex to be acquired
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Acquire a mutex object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_acquire_mutex (
+	acpi_mutex_handle               mutex_id)
+{
+	acpi_status                     status;
+	u32                             this_thread_id;
+
+
+	ACPI_FUNCTION_NAME ("ut_acquire_mutex");
+
+
+	if (mutex_id > MAX_MUTEX) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	this_thread_id = acpi_os_get_thread_id ();
+
+#ifdef ACPI_MUTEX_DEBUG
+	{
+		u32                             i;
+		/*
+		 * Mutex debug code, for internal debugging only.
+		 *
+		 * Deadlock prevention.  Check if this thread owns any mutexes of value
+		 * greater than or equal to this one.  If so, the thread has violated
+		 * the mutex ordering rule.  This indicates a coding error somewhere in
+		 * the ACPI subsystem code.
+		 */
+		for (i = mutex_id; i < MAX_MUTEX; i++) {
+			if (acpi_gbl_mutex_info[i].owner_id == this_thread_id) {
+				if (i == mutex_id) {
+					ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+							"Mutex [%s] already acquired by this thread [%X]\n",
+							acpi_ut_get_mutex_name (mutex_id), this_thread_id));
+
+					return (AE_ALREADY_ACQUIRED);
+				}
+
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+						"Invalid acquire order: Thread %X owns [%s], wants [%s]\n",
+						this_thread_id, acpi_ut_get_mutex_name (i),
+						acpi_ut_get_mutex_name (mutex_id)));
+
+				return (AE_ACQUIRE_DEADLOCK);
+			}
+		}
+	}
+#endif
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX,
+			 "Thread %X attempting to acquire Mutex [%s]\n",
+			 this_thread_id, acpi_ut_get_mutex_name (mutex_id)));
+
+	status = acpi_os_wait_semaphore (acpi_gbl_mutex_info[mutex_id].mutex,
+			   1, ACPI_WAIT_FOREVER);
+	if (ACPI_SUCCESS (status)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X acquired Mutex [%s]\n",
+				 this_thread_id, acpi_ut_get_mutex_name (mutex_id)));
+
+		acpi_gbl_mutex_info[mutex_id].use_count++;
+		acpi_gbl_mutex_info[mutex_id].owner_id = this_thread_id;
+	}
+	else {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Thread %X could not acquire Mutex [%s] %s\n",
+				 this_thread_id, acpi_ut_get_mutex_name (mutex_id),
+				 acpi_format_exception (status)));
+	}
+
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_release_mutex
+ *
+ * PARAMETERS:  mutex_iD        - ID of the mutex to be released
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Release a mutex object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_release_mutex (
+	acpi_mutex_handle               mutex_id)
+{
+	acpi_status                     status;
+	u32                             i;
+	u32                             this_thread_id;
+
+
+	ACPI_FUNCTION_NAME ("ut_release_mutex");
+
+
+	this_thread_id = acpi_os_get_thread_id ();
+	ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX,
+		"Thread %X releasing Mutex [%s]\n", this_thread_id,
+		acpi_ut_get_mutex_name (mutex_id)));
+
+	if (mutex_id > MAX_MUTEX) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	/*
+	 * Mutex must be acquired in order to release it!
+	 */
+	if (acpi_gbl_mutex_info[mutex_id].owner_id == ACPI_MUTEX_NOT_ACQUIRED) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Mutex [%s] is not acquired, cannot release\n",
+				acpi_ut_get_mutex_name (mutex_id)));
+
+		return (AE_NOT_ACQUIRED);
+	}
+
+	/*
+	 * Deadlock prevention.  Check if this thread owns any mutexes of value
+	 * greater than this one.  If so, the thread has violated the mutex
+	 * ordering rule.  This indicates a coding error somewhere in
+	 * the ACPI subsystem code.
+	 */
+	for (i = mutex_id; i < MAX_MUTEX; i++) {
+		if (acpi_gbl_mutex_info[i].owner_id == this_thread_id) {
+			if (i == mutex_id) {
+				continue;
+			}
+
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Invalid release order: owns [%s], releasing [%s]\n",
+					acpi_ut_get_mutex_name (i), acpi_ut_get_mutex_name (mutex_id)));
+
+			return (AE_RELEASE_DEADLOCK);
+		}
+	}
+
+	/* Mark unlocked FIRST */
+
+	acpi_gbl_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED;
+
+	status = acpi_os_signal_semaphore (acpi_gbl_mutex_info[mutex_id].mutex, 1);
+
+	if (ACPI_FAILURE (status)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Thread %X could not release Mutex [%s] %s\n",
+				 this_thread_id, acpi_ut_get_mutex_name (mutex_id),
+				 acpi_format_exception (status)));
+	}
+	else {
+		ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X released Mutex [%s]\n",
+				 this_thread_id, acpi_ut_get_mutex_name (mutex_id)));
+	}
+
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_update_state_and_push
+ *
+ * PARAMETERS:  *Object         - Object to be added to the new state
+ *              Action          - Increment/Decrement
+ *              state_list      - List the state will be added to
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Create a new state and push it
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_create_update_state_and_push (
+	union acpi_operand_object       *object,
+	u16                             action,
+	union acpi_generic_state        **state_list)
+{
+	union acpi_generic_state         *state;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	/* Ignore null objects; these are expected */
+
+	if (!object) {
+		return (AE_OK);
+	}
+
+	state = acpi_ut_create_update_state (object, action);
+	if (!state) {
+		return (AE_NO_MEMORY);
+	}
+
+	acpi_ut_push_generic_state (state_list, state);
+	return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_pkg_state_and_push
+ *
+ * PARAMETERS:  *Object         - Object to be added to the new state
+ *              Action          - Increment/Decrement
+ *              state_list      - List the state will be added to
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Create a new state and push it
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+acpi_status
+acpi_ut_create_pkg_state_and_push (
+	void                            *internal_object,
+	void                            *external_object,
+	u16                             index,
+	union acpi_generic_state        **state_list)
+{
+	union acpi_generic_state         *state;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	state = acpi_ut_create_pkg_state (internal_object, external_object, index);
+	if (!state) {
+		return (AE_NO_MEMORY);
+	}
+
+	acpi_ut_push_generic_state (state_list, state);
+	return (AE_OK);
+}
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_push_generic_state
+ *
+ * PARAMETERS:  list_head           - Head of the state stack
+ *              State               - State object to push
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Push a state object onto a state stack
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_push_generic_state (
+	union acpi_generic_state        **list_head,
+	union acpi_generic_state        *state)
+{
+	ACPI_FUNCTION_TRACE ("ut_push_generic_state");
+
+
+	/* Push the state object onto the front of the list (stack) */
+
+	state->common.next = *list_head;
+	*list_head = state;
+
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_pop_generic_state
+ *
+ * PARAMETERS:  list_head           - Head of the state stack
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Pop a state object from a state stack
+ *
+ ******************************************************************************/
+
+union acpi_generic_state *
+acpi_ut_pop_generic_state (
+	union acpi_generic_state        **list_head)
+{
+	union acpi_generic_state        *state;
+
+
+	ACPI_FUNCTION_TRACE ("ut_pop_generic_state");
+
+
+	/* Remove the state object at the head of the list (stack) */
+
+	state = *list_head;
+	if (state) {
+		/* Update the list head */
+
+		*list_head = state->common.next;
+	}
+
+	return_PTR (state);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_generic_state
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a generic state object.  Attempt to obtain one from
+ *              the global state cache;  If none available, create a new one.
+ *
+ ******************************************************************************/
+
+union acpi_generic_state *
+acpi_ut_create_generic_state (void)
+{
+	union acpi_generic_state        *state;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	state = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_STATE);
+
+	/* Initialize */
+
+	if (state) {
+		state->common.data_type = ACPI_DESC_TYPE_STATE;
+	}
+
+	return (state);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_thread_state
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Thread State
+ *
+ * DESCRIPTION: Create a "Thread State" - a flavor of the generic state used
+ *              to track per-thread info during method execution
+ *
+ ******************************************************************************/
+
+struct acpi_thread_state *
+acpi_ut_create_thread_state (
+	void)
+{
+	union acpi_generic_state        *state;
+
+
+	ACPI_FUNCTION_TRACE ("ut_create_thread_state");
+
+
+	/* Create the generic state object */
+
+	state = acpi_ut_create_generic_state ();
+	if (!state) {
+		return_PTR (NULL);
+	}
+
+	/* Init fields specific to the update struct */
+
+	state->common.data_type = ACPI_DESC_TYPE_STATE_THREAD;
+	state->thread.thread_id = acpi_os_get_thread_id ();
+
+	return_PTR ((struct acpi_thread_state *) state);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_update_state
+ *
+ * PARAMETERS:  Object              - Initial Object to be installed in the
+ *                                    state
+ *              Action              - Update action to be performed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create an "Update State" - a flavor of the generic state used
+ *              to update reference counts and delete complex objects such
+ *              as packages.
+ *
+ ******************************************************************************/
+
+union acpi_generic_state *
+acpi_ut_create_update_state (
+	union acpi_operand_object       *object,
+	u16                             action)
+{
+	union acpi_generic_state        *state;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_create_update_state", object);
+
+
+	/* Create the generic state object */
+
+	state = acpi_ut_create_generic_state ();
+	if (!state) {
+		return_PTR (NULL);
+	}
+
+	/* Init fields specific to the update struct */
+
+	state->common.data_type = ACPI_DESC_TYPE_STATE_UPDATE;
+	state->update.object = object;
+	state->update.value  = action;
+
+	return_PTR (state);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_pkg_state
+ *
+ * PARAMETERS:  Object              - Initial Object to be installed in the
+ *                                    state
+ *              Action              - Update action to be performed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a "Package State"
+ *
+ ******************************************************************************/
+
+union acpi_generic_state *
+acpi_ut_create_pkg_state (
+	void                            *internal_object,
+	void                            *external_object,
+	u16                             index)
+{
+	union acpi_generic_state        *state;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_create_pkg_state", internal_object);
+
+
+	/* Create the generic state object */
+
+	state = acpi_ut_create_generic_state ();
+	if (!state) {
+		return_PTR (NULL);
+	}
+
+	/* Init fields specific to the update struct */
+
+	state->common.data_type = ACPI_DESC_TYPE_STATE_PACKAGE;
+	state->pkg.source_object = (union acpi_operand_object *) internal_object;
+	state->pkg.dest_object  = external_object;
+	state->pkg.index        = index;
+	state->pkg.num_packages = 1;
+
+	return_PTR (state);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_control_state
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a "Control State" - a flavor of the generic state used
+ *              to support nested IF/WHILE constructs in the AML.
+ *
+ ******************************************************************************/
+
+union acpi_generic_state *
+acpi_ut_create_control_state (
+	void)
+{
+	union acpi_generic_state        *state;
+
+
+	ACPI_FUNCTION_TRACE ("ut_create_control_state");
+
+
+	/* Create the generic state object */
+
+	state = acpi_ut_create_generic_state ();
+	if (!state) {
+		return_PTR (NULL);
+	}
+
+	/* Init fields specific to the control struct */
+
+	state->common.data_type = ACPI_DESC_TYPE_STATE_CONTROL;
+	state->common.state     = ACPI_CONTROL_CONDITIONAL_EXECUTING;
+
+	return_PTR (state);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_generic_state
+ *
+ * PARAMETERS:  State               - The state object to be deleted
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Put a state object back into the global state cache.  The object
+ *              is not actually freed at this time.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_generic_state (
+	union acpi_generic_state        *state)
+{
+	ACPI_FUNCTION_TRACE ("ut_delete_generic_state");
+
+
+	acpi_ut_release_to_cache (ACPI_MEM_LIST_STATE, state);
+	return_VOID;
+}
+
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_generic_state_cache
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Purge the global state object cache.  Used during subsystem
+ *              termination.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_generic_state_cache (
+	void)
+{
+	ACPI_FUNCTION_TRACE ("ut_delete_generic_state_cache");
+
+
+	acpi_ut_delete_generic_cache (ACPI_MEM_LIST_STATE);
+	return_VOID;
+}
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_walk_package_tree
+ *
+ * PARAMETERS:  obj_desc        - The Package object on which to resolve refs
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Walk through a package
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_walk_package_tree (
+	union acpi_operand_object       *source_object,
+	void                            *target_object,
+	acpi_pkg_callback               walk_callback,
+	void                            *context)
+{
+	acpi_status                     status = AE_OK;
+	union acpi_generic_state        *state_list = NULL;
+	union acpi_generic_state        *state;
+	u32                             this_index;
+	union acpi_operand_object       *this_source_obj;
+
+
+	ACPI_FUNCTION_TRACE ("ut_walk_package_tree");
+
+
+	state = acpi_ut_create_pkg_state (source_object, target_object, 0);
+	if (!state) {
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	while (state) {
+		/* Get one element of the package */
+
+		this_index    = state->pkg.index;
+		this_source_obj = (union acpi_operand_object *)
+				  state->pkg.source_object->package.elements[this_index];
+
+		/*
+		 * Check for:
+		 * 1) An uninitialized package element.  It is completely
+		 *    legal to declare a package and leave it uninitialized
+		 * 2) Not an internal object - can be a namespace node instead
+		 * 3) Any type other than a package.  Packages are handled in else
+		 *    case below.
+		 */
+		if ((!this_source_obj) ||
+			(ACPI_GET_DESCRIPTOR_TYPE (this_source_obj) != ACPI_DESC_TYPE_OPERAND) ||
+			(ACPI_GET_OBJECT_TYPE (this_source_obj) != ACPI_TYPE_PACKAGE)) {
+			status = walk_callback (ACPI_COPY_TYPE_SIMPLE, this_source_obj,
+					 state, context);
+			if (ACPI_FAILURE (status)) {
+				return_ACPI_STATUS (status);
+			}
+
+			state->pkg.index++;
+			while (state->pkg.index >= state->pkg.source_object->package.count) {
+				/*
+				 * We've handled all of the objects at this level,  This means
+				 * that we have just completed a package.  That package may
+				 * have contained one or more packages itself.
+				 *
+				 * Delete this state and pop the previous state (package).
+				 */
+				acpi_ut_delete_generic_state (state);
+				state = acpi_ut_pop_generic_state (&state_list);
+
+				/* Finished when there are no more states */
+
+				if (!state) {
+					/*
+					 * We have handled all of the objects in the top level
+					 * package just add the length of the package objects
+					 * and exit
+					 */
+					return_ACPI_STATUS (AE_OK);
+				}
+
+				/*
+				 * Go back up a level and move the index past the just
+				 * completed package object.
+				 */
+				state->pkg.index++;
+			}
+		}
+		else {
+			/* This is a subobject of type package */
+
+			status = walk_callback (ACPI_COPY_TYPE_PACKAGE, this_source_obj,
+					  state, context);
+			if (ACPI_FAILURE (status)) {
+				return_ACPI_STATUS (status);
+			}
+
+			/*
+			 * Push the current state and create a new one
+			 * The callback above returned a new target package object.
+			 */
+			acpi_ut_push_generic_state (&state_list, state);
+			state = acpi_ut_create_pkg_state (this_source_obj,
+					   state->pkg.this_target_obj, 0);
+			if (!state) {
+				return_ACPI_STATUS (AE_NO_MEMORY);
+			}
+		}
+	}
+
+	/* We should never get here */
+
+	return_ACPI_STATUS (AE_AML_INTERNAL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_generate_checksum
+ *
+ * PARAMETERS:  Buffer          - Buffer to be scanned
+ *              Length          - number of bytes to examine
+ *
+ * RETURN:      checksum
+ *
+ * DESCRIPTION: Generate a checksum on a raw buffer
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_generate_checksum (
+	u8                              *buffer,
+	u32                             length)
+{
+	u32                             i;
+	signed char                     sum = 0;
+
+
+	for (i = 0; i < length; i++) {
+		sum = (signed char) (sum + buffer[i]);
+	}
+
+	return ((u8) (0 - sum));
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_resource_end_tag
+ *
+ * PARAMETERS:  obj_desc        - The resource template buffer object
+ *
+ * RETURN:      Pointer to the end tag
+ *
+ * DESCRIPTION: Find the END_TAG resource descriptor in a resource template
+ *
+ ******************************************************************************/
+
+
+u8 *
+acpi_ut_get_resource_end_tag (
+	union acpi_operand_object       *obj_desc)
+{
+	u8                              buffer_byte;
+	u8                              *buffer;
+	u8                              *end_buffer;
+
+
+	buffer    = obj_desc->buffer.pointer;
+	end_buffer = buffer + obj_desc->buffer.length;
+
+	while (buffer < end_buffer) {
+		buffer_byte = *buffer;
+		if (buffer_byte & ACPI_RDESC_TYPE_MASK) {
+			/* Large Descriptor - Length is next 2 bytes */
+
+			buffer += ((*(buffer+1) | (*(buffer+2) << 8)) + 3);
+		}
+		else {
+			/* Small Descriptor.  End Tag will be found here */
+
+			if ((buffer_byte & ACPI_RDESC_SMALL_MASK) == ACPI_RDESC_TYPE_END_TAG) {
+				/* Found the end tag descriptor, all done. */
+
+				return (buffer);
+			}
+
+			/* Length is in the header */
+
+			buffer += ((buffer_byte & 0x07) + 1);
+		}
+	}
+
+	/* End tag not found */
+
+	return (NULL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_report_error
+ *
+ * PARAMETERS:  module_name         - Caller's module name (for error output)
+ *              line_number         - Caller's line number (for error output)
+ *              component_id        - Caller's component ID (for error output)
+ *              Message             - Error message to use on failure
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print error message
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_report_error (
+	char                            *module_name,
+	u32                             line_number,
+	u32                             component_id)
+{
+
+
+	acpi_os_printf ("%8s-%04d: *** Error: ", module_name, line_number);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_report_warning
+ *
+ * PARAMETERS:  module_name         - Caller's module name (for error output)
+ *              line_number         - Caller's line number (for error output)
+ *              component_id        - Caller's component ID (for error output)
+ *              Message             - Error message to use on failure
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print warning message
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_report_warning (
+	char                            *module_name,
+	u32                             line_number,
+	u32                             component_id)
+{
+
+	acpi_os_printf ("%8s-%04d: *** Warning: ", module_name, line_number);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_report_info
+ *
+ * PARAMETERS:  module_name         - Caller's module name (for error output)
+ *              line_number         - Caller's line number (for error output)
+ *              component_id        - Caller's component ID (for error output)
+ *              Message             - Error message to use on failure
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print information message
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_report_info (
+	char                            *module_name,
+	u32                             line_number,
+	u32                             component_id)
+{
+
+	acpi_os_printf ("%8s-%04d: *** Info: ", module_name, line_number);
+}
+
+