Pull altix-mmr into release branch
[sfrench/cifs-2.6.git] / drivers / acpi / namespace / nseval.c
index 1ae89a1c88268a4a05db959585b6ad86b300c0ab..0191c7d92824234a91444505e517045909dd5b5b 100644 (file)
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
-
 #include <acpi/acpi.h>
 #include <acpi/acparser.h>
 #include <acpi/acinterp.h>
 #include <acpi/acnamesp.h>
 
-
 #define _COMPONENT          ACPI_NAMESPACE
-        ACPI_MODULE_NAME    ("nseval")
+ACPI_MODULE_NAME("nseval")
 
 /* Local prototypes */
-
 static acpi_status
-acpi_ns_execute_control_method (
-       struct acpi_parameter_info      *info);
-
-static acpi_status
-acpi_ns_get_object_value (
-       struct acpi_parameter_info      *info);
+acpi_ns_execute_control_method(struct acpi_parameter_info *info);
 
+static acpi_status acpi_ns_get_object_value(struct acpi_parameter_info *info);
 
 /*******************************************************************************
  *
@@ -85,48 +78,44 @@ acpi_ns_get_object_value (
  ******************************************************************************/
 
 acpi_status
-acpi_ns_evaluate_relative (
-       char                            *pathname,
-       struct acpi_parameter_info      *info)
+acpi_ns_evaluate_relative(char *pathname, struct acpi_parameter_info *info)
 {
-       acpi_status                     status;
-       struct acpi_namespace_node      *node = NULL;
-       union acpi_generic_state        *scope_info;
-       char                            *internal_path = NULL;
-
-
-       ACPI_FUNCTION_TRACE ("ns_evaluate_relative");
+       acpi_status status;
+       struct acpi_namespace_node *node = NULL;
+       union acpi_generic_state *scope_info;
+       char *internal_path = NULL;
 
+       ACPI_FUNCTION_TRACE("ns_evaluate_relative");
 
        /*
         * Must have a valid object handle
         */
        if (!info || !info->node) {
-               return_ACPI_STATUS (AE_BAD_PARAMETER);
+               return_ACPI_STATUS(AE_BAD_PARAMETER);
        }
 
        /* Build an internal name string for the method */
 
-       status = acpi_ns_internalize_name (pathname, &internal_path);
-       if (ACPI_FAILURE (status)) {
-               return_ACPI_STATUS (status);
+       status = acpi_ns_internalize_name(pathname, &internal_path);
+       if (ACPI_FAILURE(status)) {
+               return_ACPI_STATUS(status);
        }
 
-       scope_info = acpi_ut_create_generic_state ();
+       scope_info = acpi_ut_create_generic_state();
        if (!scope_info) {
                goto cleanup1;
        }
 
        /* Get the prefix handle and Node */
 
-       status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
-       if (ACPI_FAILURE (status)) {
+       status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+       if (ACPI_FAILURE(status)) {
                goto cleanup;
        }
 
-       info->node = acpi_ns_map_handle_to_node (info->node);
+       info->node = acpi_ns_map_handle_to_node(info->node);
        if (!info->node) {
-               (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+               (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
                status = AE_BAD_PARAMETER;
                goto cleanup;
        }
@@ -134,39 +123,38 @@ acpi_ns_evaluate_relative (
        /* Lookup the name in the namespace */
 
        scope_info->scope.node = info->node;
-       status = acpi_ns_lookup (scope_info, internal_path, ACPI_TYPE_ANY,
-                        ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL,
-                        &node);
+       status = acpi_ns_lookup(scope_info, internal_path, ACPI_TYPE_ANY,
+                               ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL,
+                               &node);
 
-       (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+       (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 
-       if (ACPI_FAILURE (status)) {
-               ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "Object [%s] not found [%s]\n",
-                       pathname, acpi_format_exception (status)));
+       if (ACPI_FAILURE(status)) {
+               ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Object [%s] not found [%s]\n",
+                                 pathname, acpi_format_exception(status)));
                goto cleanup;
        }
 
        /*
         * Now that we have a handle to the object, we can attempt to evaluate it.
         */
-       ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "%s [%p] Value %p\n",
-               pathname, node, acpi_ns_get_attached_object (node)));
+       ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
+                         pathname, node, acpi_ns_get_attached_object(node)));
 
        info->node = node;
-       status = acpi_ns_evaluate_by_handle (info);
+       status = acpi_ns_evaluate_by_handle(info);
 
-       ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "*** Completed eval of object %s ***\n",
-               pathname));
+       ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+                         "*** Completed eval of object %s ***\n", pathname));
 
-cleanup:
-       acpi_ut_delete_generic_state (scope_info);
+      cleanup:
+       acpi_ut_delete_generic_state(scope_info);
 
-cleanup1:
-       ACPI_MEM_FREE (internal_path);
-       return_ACPI_STATUS (status);
+      cleanup1:
+       ACPI_MEM_FREE(internal_path);
+       return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_evaluate_by_name
@@ -189,68 +177,63 @@ cleanup1:
  ******************************************************************************/
 
 acpi_status
-acpi_ns_evaluate_by_name (
-       char                            *pathname,
-       struct acpi_parameter_info      *info)
+acpi_ns_evaluate_by_name(char *pathname, struct acpi_parameter_info *info)
 {
-       acpi_status                     status;
-       char                            *internal_path = NULL;
-
-
-       ACPI_FUNCTION_TRACE ("ns_evaluate_by_name");
+       acpi_status status;
+       char *internal_path = NULL;
 
+       ACPI_FUNCTION_TRACE("ns_evaluate_by_name");
 
        /* Build an internal name string for the method */
 
-       status = acpi_ns_internalize_name (pathname, &internal_path);
-       if (ACPI_FAILURE (status)) {
-               return_ACPI_STATUS (status);
+       status = acpi_ns_internalize_name(pathname, &internal_path);
+       if (ACPI_FAILURE(status)) {
+               return_ACPI_STATUS(status);
        }
 
-       status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
-       if (ACPI_FAILURE (status)) {
+       status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+       if (ACPI_FAILURE(status)) {
                goto cleanup;
        }
 
        /* Lookup the name in the namespace */
 
-       status = acpi_ns_lookup (NULL, internal_path, ACPI_TYPE_ANY,
-                        ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL,
-                        &info->node);
+       status = acpi_ns_lookup(NULL, internal_path, ACPI_TYPE_ANY,
+                               ACPI_IMODE_EXECUTE, ACPI_NS_NO_UPSEARCH, NULL,
+                               &info->node);
 
-       (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+       (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 
-       if (ACPI_FAILURE (status)) {
-               ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
-                       "Object at [%s] was not found, status=%.4X\n",
-                       pathname, status));
+       if (ACPI_FAILURE(status)) {
+               ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+                                 "Object at [%s] was not found, status=%.4X\n",
+                                 pathname, status));
                goto cleanup;
        }
 
        /*
         * Now that we have a handle to the object, we can attempt to evaluate it.
         */
-       ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "%s [%p] Value %p\n",
-               pathname, info->node, acpi_ns_get_attached_object (info->node)));
-
-       status = acpi_ns_evaluate_by_handle (info);
+       ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
+                         pathname, info->node,
+                         acpi_ns_get_attached_object(info->node)));
 
-       ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "*** Completed eval of object %s ***\n",
-               pathname));
+       status = acpi_ns_evaluate_by_handle(info);
 
+       ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+                         "*** Completed eval of object %s ***\n", pathname));
 
-cleanup:
+      cleanup:
 
        /* Cleanup */
 
        if (internal_path) {
-               ACPI_MEM_FREE (internal_path);
+               ACPI_MEM_FREE(internal_path);
        }
 
-       return_ACPI_STATUS (status);
+       return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_evaluate_by_handle
@@ -275,26 +258,22 @@ cleanup:
  *
  ******************************************************************************/
 
-acpi_status
-acpi_ns_evaluate_by_handle (
-       struct acpi_parameter_info      *info)
+acpi_status acpi_ns_evaluate_by_handle(struct acpi_parameter_info *info)
 {
-       acpi_status                     status;
-
-
-       ACPI_FUNCTION_TRACE ("ns_evaluate_by_handle");
+       acpi_status status;
 
+       ACPI_FUNCTION_TRACE("ns_evaluate_by_handle");
 
        /* Check if namespace has been initialized */
 
        if (!acpi_gbl_root_node) {
-               return_ACPI_STATUS (AE_NO_NAMESPACE);
+               return_ACPI_STATUS(AE_NO_NAMESPACE);
        }
 
        /* Parameter Validation */
 
        if (!info) {
-               return_ACPI_STATUS (AE_BAD_PARAMETER);
+               return_ACPI_STATUS(AE_BAD_PARAMETER);
        }
 
        /* Initialize the return value to an invalid object */
@@ -303,23 +282,25 @@ acpi_ns_evaluate_by_handle (
 
        /* Get the prefix handle and Node */
 
-       status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
-       if (ACPI_FAILURE (status)) {
-               return_ACPI_STATUS (status);
+       status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+       if (ACPI_FAILURE(status)) {
+               return_ACPI_STATUS(status);
        }
 
-       info->node = acpi_ns_map_handle_to_node (info->node);
+       info->node = acpi_ns_map_handle_to_node(info->node);
        if (!info->node) {
-               (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
-               return_ACPI_STATUS (AE_BAD_PARAMETER);
+               (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+               return_ACPI_STATUS(AE_BAD_PARAMETER);
        }
 
        /*
         * For a method alias, we must grab the actual method node so that proper
         * scoping context will be established before execution.
         */
-       if (acpi_ns_get_type (info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) {
-               info->node = ACPI_CAST_PTR (struct acpi_namespace_node, info->node->object);
+       if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) {
+               info->node =
+                   ACPI_CAST_PTR(struct acpi_namespace_node,
+                                 info->node->object);
        }
 
        /*
@@ -329,17 +310,16 @@ acpi_ns_evaluate_by_handle (
         *
         * In both cases, the namespace is unlocked by the acpi_ns* procedure
         */
-       if (acpi_ns_get_type (info->node) == ACPI_TYPE_METHOD) {
+       if (acpi_ns_get_type(info->node) == ACPI_TYPE_METHOD) {
                /*
                 * Case 1) We have an actual control method to execute
                 */
-               status = acpi_ns_execute_control_method (info);
-       }
-       else {
+               status = acpi_ns_execute_control_method(info);
+       } else {
                /*
                 * Case 2) Object is NOT a method, just return its current value
                 */
-               status = acpi_ns_get_object_value (info);
+               status = acpi_ns_get_object_value(info);
        }
 
        /*
@@ -355,16 +335,16 @@ acpi_ns_evaluate_by_handle (
         * Namespace was unlocked by the handling acpi_ns* function, so we
         * just return
         */
-       return_ACPI_STATUS (status);
+       return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_execute_control_method
  *
  * PARAMETERS:  Info            - Method info block, contains:
  *                  Node            - Method Node to execute
+ *                  obj_desc        - Method object
  *                  Parameters      - List of parameters to pass to the method,
  *                                    terminated by NULL. Params itself may be
  *                                    NULL if no parameters are being passed.
@@ -383,31 +363,29 @@ acpi_ns_evaluate_by_handle (
  ******************************************************************************/
 
 static acpi_status
-acpi_ns_execute_control_method (
-       struct acpi_parameter_info      *info)
+acpi_ns_execute_control_method(struct acpi_parameter_info *info)
 {
-       acpi_status                     status;
-       union acpi_operand_object       *obj_desc;
-
-
-       ACPI_FUNCTION_TRACE ("ns_execute_control_method");
+       acpi_status status;
 
+       ACPI_FUNCTION_TRACE("ns_execute_control_method");
 
        /* Verify that there is a method associated with this object */
 
-       obj_desc = acpi_ns_get_attached_object (info->node);
-       if (!obj_desc) {
-               ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No attached method object\n"));
+       info->obj_desc = acpi_ns_get_attached_object(info->node);
+       if (!info->obj_desc) {
+               ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                                 "No attached method object\n"));
 
-               (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
-               return_ACPI_STATUS (AE_NULL_OBJECT);
+               (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+               return_ACPI_STATUS(AE_NULL_OBJECT);
        }
 
-       ACPI_DUMP_PATHNAME (info->node, "Execute Method:",
-               ACPI_LV_INFO, _COMPONENT);
+       ACPI_DUMP_PATHNAME(info->node, "Execute Method:",
+                          ACPI_LV_INFO, _COMPONENT);
 
-       ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Method at AML address %p Length %X\n",
-               obj_desc->method.aml_start + 1, obj_desc->method.aml_length - 1));
+       ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Method at AML address %p Length %X\n",
+                         info->obj_desc->method.aml_start + 1,
+                         info->obj_desc->method.aml_length - 1));
 
        /*
         * Unlock the namespace before execution.  This allows namespace access
@@ -416,27 +394,26 @@ acpi_ns_execute_control_method (
         * interpreter locks to ensure that no thread is using the portion of the
         * namespace that is being deleted.
         */
-       status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
-       if (ACPI_FAILURE (status)) {
-               return_ACPI_STATUS (status);
+       status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+       if (ACPI_FAILURE(status)) {
+               return_ACPI_STATUS(status);
        }
 
        /*
         * Execute the method via the interpreter.  The interpreter is locked
         * here before calling into the AML parser
         */
-       status = acpi_ex_enter_interpreter ();
-       if (ACPI_FAILURE (status)) {
-               return_ACPI_STATUS (status);
+       status = acpi_ex_enter_interpreter();
+       if (ACPI_FAILURE(status)) {
+               return_ACPI_STATUS(status);
        }
 
-       status = acpi_psx_execute (info);
-       acpi_ex_exit_interpreter ();
+       status = acpi_ps_execute_method(info);
+       acpi_ex_exit_interpreter();
 
-       return_ACPI_STATUS (status);
+       return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_get_object_value
@@ -454,16 +431,12 @@ acpi_ns_execute_control_method (
  *
  ******************************************************************************/
 
-static acpi_status
-acpi_ns_get_object_value (
-       struct acpi_parameter_info      *info)
+static acpi_status acpi_ns_get_object_value(struct acpi_parameter_info *info)
 {
-       acpi_status                     status = AE_OK;
-       struct acpi_namespace_node      *resolved_node = info->node;
-
-
-       ACPI_FUNCTION_TRACE ("ns_get_object_value");
+       acpi_status status = AE_OK;
+       struct acpi_namespace_node *resolved_node = info->node;
 
+       ACPI_FUNCTION_TRACE("ns_get_object_value");
 
        /*
         * Objects require additional resolution steps (e.g., the Node may be a
@@ -486,32 +459,33 @@ acpi_ns_get_object_value (
         *
         * We must release the namespace lock before entering the intepreter.
         */
-       status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
-       if (ACPI_FAILURE (status)) {
-               return_ACPI_STATUS (status);
+       status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+       if (ACPI_FAILURE(status)) {
+               return_ACPI_STATUS(status);
        }
 
-       status = acpi_ex_enter_interpreter ();
-       if (ACPI_SUCCESS (status)) {
-               status = acpi_ex_resolve_node_to_value (&resolved_node, NULL);
+       status = acpi_ex_enter_interpreter();
+       if (ACPI_SUCCESS(status)) {
+               status = acpi_ex_resolve_node_to_value(&resolved_node, NULL);
                /*
                 * If acpi_ex_resolve_node_to_value() succeeded, the return value was placed
                 * in resolved_node.
                 */
-               acpi_ex_exit_interpreter ();
+               acpi_ex_exit_interpreter();
 
-               if (ACPI_SUCCESS (status)) {
+               if (ACPI_SUCCESS(status)) {
                        status = AE_CTRL_RETURN_VALUE;
                        info->return_object = ACPI_CAST_PTR
-                                        (union acpi_operand_object, resolved_node);
-                       ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "Returning object %p [%s]\n",
-                               info->return_object,
-                               acpi_ut_get_object_type_name (info->return_object)));
+                           (union acpi_operand_object, resolved_node);
+                       ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+                                         "Returning object %p [%s]\n",
+                                         info->return_object,
+                                         acpi_ut_get_object_type_name(info->
+                                                                      return_object)));
                }
        }
 
        /* Namespace is unlocked */
 
-       return_ACPI_STATUS (status);
+       return_ACPI_STATUS(status);
 }
-