ACPICA 20050408 from Bob Moore

Fixed three cases in the interpreter where an "index"
argument to an ASL function was still (internally) 32
bits instead of the required 64 bits.  This was the Index
argument to the Index, Mid, and Match operators.

The "strupr" function is now permanently local
(acpi_ut_strupr), since this is not a POSIX-defined
function and not present in most kernel-level C
libraries. References to the C library strupr function
have been removed from the headers.

Completed the deployment of static
functions/prototypes. All prototypes with the static
attribute have been moved from the headers to the owning
C file.

ACPICA 20050329 from Bob Moore

An error is now generated if an attempt is made to create
a Buffer Field of length zero (A CreateField with a length
operand of zero.)

The interpreter now issues a warning whenever executable
code at the module level is detected during ACPI table
load. This will give some idea of the prevalence of this
type of code.

Implemented support for references to named objects (other
than control methods) within package objects.

Enhanced package object output for the debug
object. Package objects are now completely dumped, showing
all elements.

Enhanced miscellaneous object output for the debug
object. Any object can now be written to the debug object
(for example, a device object can be written, and the type
of the object will be displayed.)

The "static" qualifier has been added to all local
functions across the core subsystem.

The number of "long" lines (> 80 chars) within the source
has been significantly reduced, by about 1/3.

Cleaned up all header files to ensure that all CA/iASL
functions are prototyped (even static functions) and the
formatting is consistent.

Two new header files have been added, acopcode.h and
acnames.h.

Removed several obsolete functions that were no longer
used.

Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 71 insertions, 62 deletions

diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 25b0f8ae1bc..4146019b543 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -44,7 +44,6 @@
 #define DEFINE_ACPI_GLOBALS
 
 #include <linux/module.h>
-
 #include <acpi/acpi.h>
 #include <acpi/acnamesp.h>
 
@@ -52,13 +51,14 @@
          ACPI_MODULE_NAME    ("utglobal")
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_format_exception
  *
  * PARAMETERS:  Status       - The acpi_status code to be formatted
  *
- * RETURN:      A string containing the exception  text
+ * RETURN:      A string containing the exception text. A valid pointer is
+ *              always returned.
  *
  * DESCRIPTION: This function translates an ACPI exception into an ASCII string.
  *
@@ -68,8 +68,8 @@ const char *
 acpi_format_exception (
         acpi_status                     status)
 {
-        const char                      *exception = "UNKNOWN_STATUS_CODE";
         acpi_status                     sub_status;
+        const char                      *exception = NULL;
 
 
         ACPI_FUNCTION_NAME ("format_exception");
@@ -82,57 +82,55 @@ acpi_format_exception (
 
                 if (sub_status <= AE_CODE_ENV_MAX) {
                         exception = acpi_gbl_exception_names_env [sub_status];
-                        break;
                 }
-                goto unknown;
+                break;
 
         case AE_CODE_PROGRAMMER:
 
                 if (sub_status <= AE_CODE_PGM_MAX) {
                         exception = acpi_gbl_exception_names_pgm [sub_status -1];
-                        break;
                 }
-                goto unknown;
+                break;
 
         case AE_CODE_ACPI_TABLES:
 
                 if (sub_status <= AE_CODE_TBL_MAX) {
                         exception = acpi_gbl_exception_names_tbl [sub_status -1];
-                        break;
                 }
-                goto unknown;
+                break;
 
         case AE_CODE_AML:
 
                 if (sub_status <= AE_CODE_AML_MAX) {
                         exception = acpi_gbl_exception_names_aml [sub_status -1];
-                        break;
                 }
-                goto unknown;
+                break;
 
         case AE_CODE_CONTROL:
 
                 if (sub_status <= AE_CODE_CTRL_MAX) {
                         exception = acpi_gbl_exception_names_ctrl [sub_status -1];
-                        break;
                 }
-                goto unknown;
+                break;
 
         default:
-                goto unknown;
+                break;
         }
 
+        if (!exception) {
+                /* Exception code was not recognized */
 
-        return ((const char *) exception);
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                        "Unknown exception code: 0x%8.8X\n", status));
 
-unknown:
+                return ((const char *) "UNKNOWN_STATUS_CODE");
+        }
 
-        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown exception code: 0x%8.8X\n", status));
         return ((const char *) exception);
 }
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * Static global variable initialization.
  *
@@ -212,13 +210,12 @@ const char                          *acpi_gbl_valid_osi_strings[ACPI_NUM_OSI_STR
 };
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * Namespace globals
  *
  ******************************************************************************/
 
-
 /*
  * Predefined ACPI Names (Built-in to the Interpreter)
  *
@@ -241,9 +238,11 @@ const struct acpi_predefined_names      acpi_gbl_pre_defined_names[] =
 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
         {"_OSI",    ACPI_TYPE_METHOD,           (char *) 1},
 #endif
-        {NULL,      ACPI_TYPE_ANY,              NULL}              /* Table terminator */
-};
 
+        /* Table terminator */
+
+        {NULL,      ACPI_TYPE_ANY,              NULL}
+};
 
 /*
  * Properties of the ACPI Object Types, both internal and external.
@@ -288,22 +287,25 @@ const u8                                acpi_gbl_ns_properties[] =
 /* Hex to ASCII conversion table */
 
 static const char                   acpi_gbl_hex_to_ascii[] =
-                          {'0','1','2','3','4','5','6','7',
-                                         '8','9','A','B','C','D','E','F'};
+{
+        '0','1','2','3','4','5','6','7',
+        '8','9','A','B','C','D','E','F'
+};
+
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_hex_to_ascii_char
  *
  * PARAMETERS:  Integer             - Contains the hex digit
  *              Position            - bit position of the digit within the
- *                                    integer
+ *                                    integer (multiple of 4)
  *
- * RETURN:      Ascii character
+ * RETURN:      The converted Ascii character
  *
- * DESCRIPTION: Convert a hex digit to an ascii character
+ * DESCRIPTION: Convert a hex digit to an Ascii character
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 char
 acpi_ut_hex_to_ascii_char (
@@ -315,7 +317,7 @@ acpi_ut_hex_to_ascii_char (
 }
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * Table name globals
  *
@@ -324,7 +326,7 @@ acpi_ut_hex_to_ascii_char (
  * that are not used by the subsystem are simply ignored.
  *
  * Do NOT add any table to this list that is not consumed directly by this
- * subsystem.
+ * subsystem (No MADT, ECDT, SBST, etc.)
  *
  ******************************************************************************/
 
@@ -391,7 +393,7 @@ struct acpi_fixed_event_info        acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVE
         /* ACPI_EVENT_RTC           */  {ACPI_BITREG_RT_CLOCK_STATUS,       ACPI_BITREG_RT_CLOCK_ENABLE,     ACPI_BITMASK_RT_CLOCK_STATUS,       ACPI_BITMASK_RT_CLOCK_ENABLE},
 };
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_get_region_name
  *
@@ -401,7 +403,7 @@ struct acpi_fixed_event_info        acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVE
  *
  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 /* Region type decoding */
 
@@ -429,7 +431,6 @@ acpi_ut_get_region_name (
         {
                 return ("user_defined_region");
         }
-
         else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS)
         {
                 return ("invalid_space_id");
@@ -439,7 +440,7 @@ acpi_ut_get_region_name (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_get_event_name
  *
@@ -449,7 +450,7 @@ acpi_ut_get_region_name (
  *
  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 /* Event type decoding */
 
@@ -477,7 +478,7 @@ acpi_ut_get_event_name (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_get_type_name
  *
@@ -487,20 +488,21 @@ acpi_ut_get_event_name (
  *
  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 /*
  * Elements of acpi_gbl_ns_type_names below must match
  * one-to-one with values of acpi_object_type
  *
- * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching; when
- * stored in a table it really means that we have thus far seen no evidence to
- * indicate what type is actually going to be stored for this entry.
+ * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
+ * when stored in a table it really means that we have thus far seen no
+ * evidence to indicate what type is actually going to be stored for this entry.
  */
 static const char                   acpi_gbl_bad_type[] = "UNDEFINED";
-#define TYPE_NAME_LENGTH    12                           /* Maximum length of each string */
 
-static const char                   *acpi_gbl_ns_type_names[] = /* printable names of ACPI types */
+/* Printable names of the ACPI object types */
+
+static const char                   *acpi_gbl_ns_type_names[] =
 {
         /* 00 */ "Untyped",
         /* 01 */ "Integer",
@@ -564,7 +566,7 @@ acpi_ut_get_object_type_name (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_get_node_name
  *
@@ -574,7 +576,7 @@ acpi_ut_get_object_type_name (
  *
  * DESCRIPTION: Validate the node and return the node's ACPI name.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 char *
 acpi_ut_get_node_name (
@@ -618,7 +620,7 @@ acpi_ut_get_node_name (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_get_descriptor_name
  *
@@ -628,9 +630,11 @@ acpi_ut_get_node_name (
  *
  * DESCRIPTION: Validate object and return the descriptor type
  *
- ****************************************************************************/
+ ******************************************************************************/
+
+/* Printable names of object descriptor types */
 
-static const char                   *acpi_gbl_desc_type_names[] = /* printable names of descriptor types */
+static const char                   *acpi_gbl_desc_type_names[] =
 {
         /* 00 */ "Invalid",
         /* 01 */ "Cached",
@@ -676,17 +680,18 @@ acpi_ut_get_descriptor_name (
  * Strings and procedures used for debug only
  */
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_get_mutex_name
  *
- * PARAMETERS:  None.
+ * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
  *
- * RETURN:      Status
+ * RETURN:      String containing the name of the mutex. Always returns a valid
+ *              pointer.
  *
  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 char *
 acpi_ut_get_mutex_name (
@@ -700,21 +705,20 @@ acpi_ut_get_mutex_name (
 
         return (acpi_gbl_mutex_names[mutex_id]);
 }
-
 #endif
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_valid_object_type
  *
  * PARAMETERS:  Type            - Object type to be validated
  *
- * RETURN:      TRUE if valid object type
+ * RETURN:      TRUE if valid object type, FALSE otherwise
  *
  * DESCRIPTION: Validate an object type
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 u8
 acpi_ut_valid_object_type (
@@ -732,7 +736,7 @@ acpi_ut_valid_object_type (
 }
 
 
-/****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_allocate_owner_id
  *
@@ -740,7 +744,10 @@ acpi_ut_valid_object_type (
  *
  * DESCRIPTION: Allocate a table or method owner id
  *
- ***************************************************************************/
+ * NOTE: this algorithm has a wraparound problem at 64_k method invocations, and
+ *       should be revisited (TBD)
+ *
+ ******************************************************************************/
 
 acpi_owner_id
 acpi_ut_allocate_owner_id (
@@ -796,16 +803,18 @@ acpi_ut_allocate_owner_id (
 }
 
 
-/****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ut_init_globals
  *
- * PARAMETERS:  none
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
  *
  * DESCRIPTION: Init library globals.  All globals that require specific
  *              initialization should be initialized here!
  *
- ***************************************************************************/
+ ******************************************************************************/
 
 void
 acpi_ut_init_globals (