diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
index e348db0..21f0599 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -231,7 +231,7 @@
 	struct acpi_namespace_node *method_node;
 	struct acpi_walk_state *next_walk_state = NULL;
 	union acpi_operand_object *obj_desc;
-	struct acpi_parameter_info info;
+	struct acpi_evaluate_info *info;
 	u32 i;
 
 	ACPI_FUNCTION_TRACE_PTR(ds_call_control_method, this_walk_state);
@@ -319,12 +319,24 @@
 	 */
 	this_walk_state->operands[this_walk_state->num_operands] = NULL;
 
-	info.parameters = &this_walk_state->operands[0];
-	info.parameter_type = ACPI_PARAM_ARGS;
+	/*
+	 * Allocate and initialize the evaluation information block
+	 * TBD: this is somewhat inefficient, should change interface to
+	 * ds_init_aml_walk. For now, keeps this struct off the CPU stack
+	 */
+	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+	if (!info) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	info->parameters = &this_walk_state->operands[0];
+	info->parameter_type = ACPI_PARAM_ARGS;
 
 	status = acpi_ds_init_aml_walk(next_walk_state, NULL, method_node,
 				       obj_desc->method.aml_start,
-				       obj_desc->method.aml_length, &info, 3);
+				       obj_desc->method.aml_length, info, 3);
+
+	ACPI_FREE(info);
 	if (ACPI_FAILURE(status)) {
 		goto cleanup;
 	}
diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
index 8afb203..3acbd91 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -295,7 +295,7 @@
 
 	case AML_CLASS_NAMED_OBJECT:
 
-		if (walk_state->walk_type == ACPI_WALK_METHOD) {
+		if (walk_state->walk_type & ACPI_WALK_METHOD) {
 			/*
 			 * Found a named object declaration during method execution;
 			 * we must enter this object into the namespace.  The created
diff --git a/drivers/acpi/dispatcher/dswstate.c b/drivers/acpi/dispatcher/dswstate.c
index 82c1e21..7817e55 100644
--- a/drivers/acpi/dispatcher/dswstate.c
+++ b/drivers/acpi/dispatcher/dswstate.c
@@ -703,7 +703,7 @@
 		      struct acpi_namespace_node *method_node,
 		      u8 * aml_start,
 		      u32 aml_length,
-		      struct acpi_parameter_info *info, u8 pass_number)
+		      struct acpi_evaluate_info *info, u8 pass_number)
 {
 	acpi_status status;
 	struct acpi_parse_state *parser_state = &walk_state->parser_state;
@@ -825,9 +825,12 @@
 		return;
 	}
 
+	/* There should not be any open scopes */
+
 	if (walk_state->parser_state.scope) {
 		ACPI_ERROR((AE_INFO, "%p walk still has a scope list",
 			    walk_state));
+		acpi_ps_cleanup_scope(&walk_state->parser_state);
 	}
 
 	/* Always must free any linked control states */
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index aa179dc..23fe53b 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -488,9 +488,9 @@
  *
  * RETURN:      None
  *
- * DESCRIPTION: Perform the actual execution of a GPE control method.  This
- *              function is called from an invocation of acpi_os_exece
- *              (and therefore does NOT execute at interrupt level) so that
+ * DESCRIPTION: Perform the actual execution of a GPE control method. This
+ *              function is called from an invocation of acpi_os_execute and
+ *              therefore does NOT execute at interrupt level - so that
  *              the control method itself is not executed in the context of
  *              an interrupt handler.
  *
@@ -502,7 +502,7 @@
 	u32 gpe_number = 0;
 	acpi_status status;
 	struct acpi_gpe_event_info local_gpe_event_info;
-	struct acpi_parameter_info info;
+	struct acpi_evaluate_info *info;
 
 	ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
 
@@ -540,16 +540,29 @@
 	 */
 	if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) ==
 	    ACPI_GPE_DISPATCH_METHOD) {
-		/*
-		 * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
-		 * control method that corresponds to this GPE
-		 */
-		info.node = local_gpe_event_info.dispatch.method_node;
-		info.parameters =
-		    ACPI_CAST_PTR(union acpi_operand_object *, gpe_event_info);
-		info.parameter_type = ACPI_PARAM_GPE;
 
-		status = acpi_ns_evaluate_by_handle(&info);
+		/* Allocate the evaluation information block */
+
+		info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+		if (!info) {
+			status = AE_NO_MEMORY;
+		} else {
+			/*
+			 * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
+			 * control method that corresponds to this GPE
+			 */
+			info->prefix_node =
+			    local_gpe_event_info.dispatch.method_node;
+			info->parameters =
+			    ACPI_CAST_PTR(union acpi_operand_object *,
+					  gpe_event_info);
+			info->parameter_type = ACPI_PARAM_GPE;
+			info->flags = ACPI_IGNORE_RETURN_VALUE;
+
+			status = acpi_ns_evaluate(info);
+			ACPI_FREE(info);
+		}
+
 		if (ACPI_FAILURE(status)) {
 			ACPI_EXCEPTION((AE_INFO, status,
 					"While evaluating method [%4.4s] for GPE[%2X]",
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index 24e0b8d..6eef4ef 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -49,12 +49,13 @@
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evmisc")
 
+/* Names for Notify() values, used for debug output */
 #ifdef ACPI_DEBUG_OUTPUT
 static const char *acpi_notify_value_names[] = {
 	"Bus Check",
 	"Device Check",
 	"Device Wake",
-	"Eject request",
+	"Eject Request",
 	"Device Check Light",
 	"Frequency Mismatch",
 	"Bus Mode Mismatch",
@@ -191,8 +192,9 @@
 		notify_info->notify.value = (u16) notify_value;
 		notify_info->notify.handler_obj = handler_obj;
 
-		status = acpi_os_execute(OSL_NOTIFY_HANDLER,
-					 acpi_ev_notify_dispatch, notify_info);
+		status =
+		    acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_notify_dispatch,
+				    notify_info);
 		if (ACPI_FAILURE(status)) {
 			acpi_ut_delete_generic_state(notify_info);
 		}
@@ -345,8 +347,9 @@
 
 		/* Run the Global Lock thread which will signal all waiting threads */
 
-		status = acpi_os_execute(OSL_GLOBAL_LOCK_HANDLER,
-					 acpi_ev_global_lock_thread, context);
+		status =
+		    acpi_os_execute(OSL_GLOBAL_LOCK_HANDLER,
+				    acpi_ev_global_lock_thread, context);
 		if (ACPI_FAILURE(status)) {
 			ACPI_EXCEPTION((AE_INFO, status,
 					"Could not queue Global Lock thread"));
@@ -462,8 +465,9 @@
 	 * Acquire the global lock semaphore first.
 	 * Since this wait will block, we must release the interpreter
 	 */
-	status = acpi_ex_system_wait_semaphore(acpi_gbl_global_lock_semaphore,
-					       timeout);
+	status =
+	    acpi_ex_system_wait_semaphore(acpi_gbl_global_lock_semaphore,
+					  timeout);
 	return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/events/evregion.c b/drivers/acpi/events/evregion.c
index edf9d2e..094a17e 100644
--- a/drivers/acpi/events/evregion.c
+++ b/drivers/acpi/events/evregion.c
@@ -193,8 +193,8 @@
 acpi_status
 acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)
 {
-	struct acpi_parameter_info info;
-	union acpi_operand_object *params[3];
+	struct acpi_evaluate_info *info;
+	union acpi_operand_object *args[3];
 	union acpi_operand_object *region_obj2;
 	acpi_status status;
 
@@ -209,47 +209,60 @@
 		return_ACPI_STATUS(AE_OK);
 	}
 
-	/*
-	 * The _REG method has two arguments:
-	 *
-	 * Arg0, Integer: Operation region space ID
-	 *          Same value as region_obj->Region.space_id
-	 * Arg1, Integer: connection status
-	 *          1 for connecting the handler,
-	 *          0 for disconnecting the handler
-	 *          Passed as a parameter
-	 */
-	params[0] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
-	if (!params[0]) {
+	/* Allocate and initialize the evaluation information block */
+
+	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+	if (!info) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
-	params[1] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
-	if (!params[1]) {
+	info->prefix_node = region_obj2->extra.method_REG;
+	info->pathname = NULL;
+	info->parameters = args;
+	info->parameter_type = ACPI_PARAM_ARGS;
+	info->flags = ACPI_IGNORE_RETURN_VALUE;
+
+	/*
+	 * The _REG method has two arguments:
+	 *
+	 * Arg0 - Integer:
+	 *  Operation region space ID Same value as region_obj->Region.space_id
+	 *
+	 * Arg1 - Integer:
+	 *  connection status 1 for connecting the handler, 0 for disconnecting
+	 *  the handler (Passed as a parameter)
+	 */
+	args[0] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
+	if (!args[0]) {
 		status = AE_NO_MEMORY;
-		goto cleanup;
+		goto cleanup1;
+	}
+
+	args[1] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
+	if (!args[1]) {
+		status = AE_NO_MEMORY;
+		goto cleanup2;
 	}
 
 	/* Setup the parameter objects */
 
-	params[0]->integer.value = region_obj->region.space_id;
-	params[1]->integer.value = function;
-	params[2] = NULL;
-
-	info.node = region_obj2->extra.method_REG;
-	info.parameters = params;
-	info.parameter_type = ACPI_PARAM_ARGS;
+	args[0]->integer.value = region_obj->region.space_id;
+	args[1]->integer.value = function;
+	args[2] = NULL;
 
 	/* Execute the method, no return value */
 
 	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
-			(ACPI_TYPE_METHOD, info.node, NULL));
-	status = acpi_ns_evaluate_by_handle(&info);
+			(ACPI_TYPE_METHOD, info->prefix_node, NULL));
 
-	acpi_ut_remove_reference(params[1]);
+	status = acpi_ns_evaluate(info);
+	acpi_ut_remove_reference(args[1]);
 
-      cleanup:
-	acpi_ut_remove_reference(params[0]);
+      cleanup2:
+	acpi_ut_remove_reference(args[0]);
+
+      cleanup1:
+	ACPI_FREE(info);
 	return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index 1cecd57..5b3c7a8 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -475,8 +475,9 @@
 
 	/* Find any "_REG" method associated with this region definition */
 
-	status = acpi_ns_search_node(*reg_name_ptr, node,
-				     ACPI_TYPE_METHOD, &method_node);
+	status =
+	    acpi_ns_search_one_scope(*reg_name_ptr, node, ACPI_TYPE_METHOD,
+				     &method_node);
 	if (ACPI_SUCCESS(status)) {
 		/*
 		 * The _REG method is optional and there can be only one per region
diff --git a/drivers/acpi/executer/exconfig.c b/drivers/acpi/executer/exconfig.c
index 9ae3cb5..8233524 100644
--- a/drivers/acpi/executer/exconfig.c
+++ b/drivers/acpi/executer/exconfig.c
@@ -214,9 +214,8 @@
 		 * location within the namespace where the table will be loaded.
 		 */
 		status =
-		    acpi_ns_get_node_by_path(operand[3]->string.pointer,
-					     start_node, ACPI_NS_SEARCH_PARENT,
-					     &parent_node);
+		    acpi_ns_get_node(start_node, operand[3]->string.pointer,
+				     ACPI_NS_SEARCH_PARENT, &parent_node);
 		if (ACPI_FAILURE(status)) {
 			return_ACPI_STATUS(status);
 		}
@@ -237,9 +236,8 @@
 		/* Find the node referenced by the parameter_path_string */
 
 		status =
-		    acpi_ns_get_node_by_path(operand[4]->string.pointer,
-					     start_node, ACPI_NS_SEARCH_PARENT,
-					     &parameter_node);
+		    acpi_ns_get_node(start_node, operand[4]->string.pointer,
+				     ACPI_NS_SEARCH_PARENT, &parameter_node);
 		if (ACPI_FAILURE(status)) {
 			return_ACPI_STATUS(status);
 		}
diff --git a/drivers/acpi/executer/exfldio.c b/drivers/acpi/executer/exfldio.c
index ca9925c..3b7c435 100644
--- a/drivers/acpi/executer/exfldio.c
+++ b/drivers/acpi/executer/exfldio.c
@@ -145,10 +145,10 @@
 	 * length of one field datum (access width) must fit within the region.
 	 * (Region length is specified in bytes)
 	 */
-	if (rgn_desc->region.length < (obj_desc->common_field.base_byte_offset +
-				       field_datum_byte_offset +
-				       obj_desc->common_field.
-				       access_byte_width)) {
+	if (rgn_desc->region.length <
+	    (obj_desc->common_field.base_byte_offset +
+	     field_datum_byte_offset +
+	     obj_desc->common_field.access_byte_width)) {
 		if (acpi_gbl_enable_interpreter_slack) {
 			/*
 			 * Slack mode only:  We will go ahead and allow access to this
@@ -811,13 +811,15 @@
 
 	mask =
 	    ACPI_MASK_BITS_BELOW(obj_desc->common_field.start_field_bit_offset);
-	datum_count =
-	    ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length,
-			     obj_desc->common_field.access_bit_width);
-	field_datum_count =
-	    ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length +
-			     obj_desc->common_field.start_field_bit_offset,
-			     obj_desc->common_field.access_bit_width);
+
+	datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length,
+				       obj_desc->common_field.access_bit_width);
+
+	field_datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length +
+					     obj_desc->common_field.
+					     start_field_bit_offset,
+					     obj_desc->common_field.
+					     access_bit_width);
 
 	/* Get initial Datum from the input buffer */
 
diff --git a/drivers/acpi/executer/exmisc.c b/drivers/acpi/executer/exmisc.c
index 794d9b8..bd98aab 100644
--- a/drivers/acpi/executer/exmisc.c
+++ b/drivers/acpi/executer/exmisc.c
@@ -445,10 +445,24 @@
 
 	case AML_SHIFT_LEFT_OP:	/* shift_left (Operand, shift_count, Result) */
 
+		/*
+		 * We need to check if the shiftcount is larger than the integer bit
+		 * width since the behavior of this is not well-defined in the C language.
+		 */
+		if (integer1 >= acpi_gbl_integer_bit_width) {
+			return (0);
+		}
 		return (integer0 << integer1);
 
 	case AML_SHIFT_RIGHT_OP:	/* shift_right (Operand, shift_count, Result) */
 
+		/*
+		 * We need to check if the shiftcount is larger than the integer bit
+		 * width since the behavior of this is not well-defined in the C language.
+		 */
+		if (integer1 >= acpi_gbl_integer_bit_width) {
+			return (0);
+		}
 		return (integer0 >> integer1);
 
 	case AML_SUBTRACT_OP:	/* Subtract (Integer0, Integer1, Result) */
diff --git a/drivers/acpi/executer/exoparg1.c b/drivers/acpi/executer/exoparg1.c
index 05b89c5..8284c52 100644
--- a/drivers/acpi/executer/exoparg1.c
+++ b/drivers/acpi/executer/exoparg1.c
@@ -874,16 +874,14 @@
 				 *    Field, so we need to resolve the node to a value.
 				 */
 				status =
-				    acpi_ns_get_node_by_path(operand[0]->string.
-							     pointer,
-							     walk_state->
-							     scope_info->scope.
-							     node,
-							     ACPI_NS_SEARCH_PARENT,
-							     ACPI_CAST_INDIRECT_PTR
-							     (struct
-							      acpi_namespace_node,
-							      &return_desc));
+				    acpi_ns_get_node(walk_state->scope_info->
+						     scope.node,
+						     operand[0]->string.pointer,
+						     ACPI_NS_SEARCH_PARENT,
+						     ACPI_CAST_INDIRECT_PTR
+						     (struct
+						      acpi_namespace_node,
+						      &return_desc));
 				if (ACPI_FAILURE(status)) {
 					goto cleanup;
 				}
diff --git a/drivers/acpi/executer/exregion.c b/drivers/acpi/executer/exregion.c
index 4fba452..3cc97ba 100644
--- a/drivers/acpi/executer/exregion.c
+++ b/drivers/acpi/executer/exregion.c
@@ -477,23 +477,16 @@
 				 acpi_integer * value,
 				 void *handler_context, void *region_context)
 {
-	acpi_status status = AE_OK;
-	u32 byte_width = ACPI_DIV_8(bit_width);
-	u32 i;
-	char *logical_addr_ptr;
-
 	ACPI_FUNCTION_TRACE(ex_data_table_space_handler);
 
-	logical_addr_ptr = ACPI_PHYSADDR_TO_PTR(address);
-
 	/* Perform the memory read or write */
 
 	switch (function) {
 	case ACPI_READ:
 
-		for (i = 0; i < byte_width; i++) {
-			((char *)value)[i] = logical_addr_ptr[i];
-		}
+		ACPI_MEMCPY(ACPI_CAST_PTR(char, value),
+			    ACPI_PHYSADDR_TO_PTR(address),
+			    ACPI_DIV_8(bit_width));
 		break;
 
 	case ACPI_WRITE:
@@ -502,5 +495,5 @@
 		return_ACPI_STATUS(AE_SUPPORT);
 	}
 
-	return_ACPI_STATUS(status);
+	return_ACPI_STATUS(AE_OK);
 }
diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/hardware/hwregs.c
index ec9f5a1..5a3aa8d 100644
--- a/drivers/acpi/hardware/hwregs.c
+++ b/drivers/acpi/hardware/hwregs.c
@@ -127,8 +127,7 @@
 acpi_get_sleep_type_data(u8 sleep_state, u8 * sleep_type_a, u8 * sleep_type_b)
 {
 	acpi_status status = AE_OK;
-	struct acpi_parameter_info info;
-	char *sleep_state_name;
+	struct acpi_evaluate_info *info;
 
 	ACPI_FUNCTION_TRACE(acpi_get_sleep_type_data);
 
@@ -138,34 +137,39 @@
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	/* Evaluate the namespace object containing the values for this state */
+	/* Allocate the evaluation information block */
 
-	info.parameters = NULL;
-	info.return_object = NULL;
-	sleep_state_name =
+	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+	if (!info) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	info->pathname =
 	    ACPI_CAST_PTR(char, acpi_gbl_sleep_state_names[sleep_state]);
 
-	status = acpi_ns_evaluate_by_name(sleep_state_name, &info);
+	/* Evaluate the namespace object containing the values for this state */
+
+	status = acpi_ns_evaluate(info);
 	if (ACPI_FAILURE(status)) {
 		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 				  "%s while evaluating SleepState [%s]\n",
 				  acpi_format_exception(status),
-				  sleep_state_name));
+				  info->pathname));
 
-		return_ACPI_STATUS(status);
+		goto cleanup;
 	}
 
 	/* Must have a return object */
 
-	if (!info.return_object) {
+	if (!info->return_object) {
 		ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
-			    sleep_state_name));
+			    info->pathname));
 		status = AE_NOT_EXIST;
 	}
 
 	/* It must be of type Package */
 
-	else if (ACPI_GET_OBJECT_TYPE(info.return_object) != ACPI_TYPE_PACKAGE) {
+	else if (ACPI_GET_OBJECT_TYPE(info->return_object) != ACPI_TYPE_PACKAGE) {
 		ACPI_ERROR((AE_INFO,
 			    "Sleep State return object is not a Package"));
 		status = AE_AML_OPERAND_TYPE;
@@ -178,7 +182,7 @@
 	 * by BIOS vendors seems to be to have 2 or more elements, at least
 	 * one per sleep type (A/B).
 	 */
-	else if (info.return_object->package.count < 2) {
+	else if (info->return_object->package.count < 2) {
 		ACPI_ERROR((AE_INFO,
 			    "Sleep State return package does not have at least two elements"));
 		status = AE_AML_NO_OPERAND;
@@ -186,35 +190,38 @@
 
 	/* The first two elements must both be of type Integer */
 
-	else if ((ACPI_GET_OBJECT_TYPE(info.return_object->package.elements[0])
+	else if ((ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[0])
 		  != ACPI_TYPE_INTEGER) ||
-		 (ACPI_GET_OBJECT_TYPE(info.return_object->package.elements[1])
+		 (ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[1])
 		  != ACPI_TYPE_INTEGER)) {
 		ACPI_ERROR((AE_INFO,
 			    "Sleep State return package elements are not both Integers (%s, %s)",
-			    acpi_ut_get_object_type_name(info.return_object->
+			    acpi_ut_get_object_type_name(info->return_object->
 							 package.elements[0]),
-			    acpi_ut_get_object_type_name(info.return_object->
+			    acpi_ut_get_object_type_name(info->return_object->
 							 package.elements[1])));
 		status = AE_AML_OPERAND_TYPE;
 	} else {
 		/* Valid _Sx_ package size, type, and value */
 
 		*sleep_type_a = (u8)
-		    (info.return_object->package.elements[0])->integer.value;
+		    (info->return_object->package.elements[0])->integer.value;
 		*sleep_type_b = (u8)
-		    (info.return_object->package.elements[1])->integer.value;
+		    (info->return_object->package.elements[1])->integer.value;
 	}
 
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status,
 				"While evaluating SleepState [%s], bad Sleep object %p type %s",
-				sleep_state_name, info.return_object,
-				acpi_ut_get_object_type_name(info.
+				info->pathname, info->return_object,
+				acpi_ut_get_object_type_name(info->
 							     return_object)));
 	}
 
-	acpi_ut_remove_reference(info.return_object);
+	acpi_ut_remove_reference(info->return_object);
+
+      cleanup:
+	ACPI_FREE(info);
 	return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/namespace/nsaccess.c
index ba8ad56..48fadad 100644
--- a/drivers/acpi/namespace/nsaccess.c
+++ b/drivers/acpi/namespace/nsaccess.c
@@ -259,10 +259,8 @@
 	/* Save a handle to "_GPE", it is always present */
 
 	if (ACPI_SUCCESS(status)) {
-		status =
-		    acpi_ns_get_node_by_path("\\_GPE", NULL,
-					     ACPI_NS_NO_UPSEARCH,
-					     &acpi_gbl_fadt_gpe_device);
+		status = acpi_ns_get_node(NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
+					  &acpi_gbl_fadt_gpe_device);
 	}
 
 	return_ACPI_STATUS(status);
diff --git a/drivers/acpi/namespace/nseval.c b/drivers/acpi/namespace/nseval.c
index 4b05406..4b0a4a8 100644
--- a/drivers/acpi/namespace/nseval.c
+++ b/drivers/acpi/namespace/nseval.c
@@ -1,7 +1,6 @@
 /*******************************************************************************
  *
- * Module Name: nseval - Object evaluation interfaces -- includes control
- *                       method lookup and execution.
+ * Module Name: nseval - Object evaluation, includes control method execution
  *
  ******************************************************************************/
 
@@ -50,196 +49,14 @@
 #define _COMPONENT          ACPI_NAMESPACE
 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);
-
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ns_evaluate_relative
+ * FUNCTION:    acpi_ns_evaluate
  *
- * PARAMETERS:  Pathname        - Name of method to execute, If NULL, the
- *                                handle is the object to execute
- *              Info            - Method info block, contains:
- *                  return_object   - Where to put method's return value (if
- *                                    any).  If NULL, no value is returned.
- *                  Params          - List of parameters to pass to the method,
- *                                    terminated by NULL.  Params itself may be
- *                                    NULL if no parameters are being passed.
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Evaluate the object or find and execute the requested method
- *
- * MUTEX:       Locks Namespace
- *
- ******************************************************************************/
-
-acpi_status
-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);
-
-	/*
-	 * Must have a valid object handle
-	 */
-	if (!info || !info->node) {
-		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);
-	}
-
-	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)) {
-		goto cleanup;
-	}
-
-	info->node = acpi_ns_map_handle_to_node(info->node);
-	if (!info->node) {
-		(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-		status = AE_BAD_PARAMETER;
-		goto cleanup;
-	}
-
-	/* 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);
-
-	(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)));
-		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)));
-
-	info->node = node;
-	status = acpi_ns_evaluate_by_handle(info);
-
-	ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
-			  "*** Completed eval of object %s ***\n", pathname));
-
-      cleanup:
-	acpi_ut_delete_generic_state(scope_info);
-
-      cleanup1:
-	ACPI_FREE(internal_path);
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_evaluate_by_name
- *
- * PARAMETERS:  Pathname        - Fully qualified pathname to the object
- *              Info                - Method info block, contains:
- *                  return_object   - Where to put method's return value (if
- *                                    any).  If NULL, no value is returned.
- *                  Params          - List of parameters to pass to the method,
- *                                    terminated by NULL.  Params itself may be
- *                                    NULL if no parameters are being passed.
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Evaluate the object or rind and execute the requested method
- *              passing the given parameters
- *
- * MUTEX:       Locks Namespace
- *
- ******************************************************************************/
-
-acpi_status
-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);
-
-	/* 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_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);
-
-	(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));
-		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,
-			  "*** Completed eval of object %s ***\n", pathname));
-
-      cleanup:
-
-	/* Cleanup */
-
-	if (internal_path) {
-		ACPI_FREE(internal_path);
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_evaluate_by_handle
- *
- * PARAMETERS:  Info            - Method info block, contains:
- *                  Node            - Method/Object Node to execute
+ * PARAMETERS:  Info            - Evaluation info block, contains:
+ *                  prefix_node     - Prefix or Method/Object Node to execute
+ *                  Pathname        - Name of method to execute, If NULL, the
+ *                                    Node is the object to execute
  *                  Parameters      - List of parameters to pass to the method,
  *                                    terminated by NULL. Params itself may be
  *                                    NULL if no parameters are being passed.
@@ -248,29 +65,21 @@
  *                  parameter_type  - Type of Parameter list
  *                  return_object   - Where to put method's return value (if
  *                                    any). If NULL, no value is returned.
+ *                  Flags           - ACPI_IGNORE_RETURN_VALUE to delete return
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Evaluate object or execute the requested method passing the
- *              given parameters
+ * DESCRIPTION: Execute a control method or return the current value of an
+ *              ACPI namespace object.
  *
- * MUTEX:       Locks Namespace
+ * MUTEX:       Locks interpreter
  *
  ******************************************************************************/
-
-acpi_status acpi_ns_evaluate_by_handle(struct acpi_parameter_info *info)
+acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info)
 {
 	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);
-	}
-
-	/* Parameter Validation */
+	ACPI_FUNCTION_TRACE(ns_evaluate);
 
 	if (!info) {
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
@@ -280,203 +89,120 @@
 
 	info->return_object = NULL;
 
-	/* Get the prefix handle and Node */
-
-	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	/*
+	 * Get the actual namespace node for the target object. Handles these cases:
+	 *
+	 * 1) Null node, Pathname (absolute path)
+	 * 2) Node, Pathname (path relative to Node)
+	 * 3) Node, Null Pathname
+	 */
+	status = acpi_ns_get_node(info->prefix_node, info->pathname,
+				  ACPI_NS_NO_UPSEARCH, &info->resolved_node);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
 
-	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);
-	}
-
 	/*
 	 * 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 =
+	if (acpi_ns_get_type(info->resolved_node) ==
+	    ACPI_TYPE_LOCAL_METHOD_ALIAS) {
+		info->resolved_node =
 		    ACPI_CAST_PTR(struct acpi_namespace_node,
-				  info->node->object);
+				  info->resolved_node->object);
 	}
 
+	ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", info->pathname,
+			  info->resolved_node,
+			  acpi_ns_get_attached_object(info->resolved_node)));
+
 	/*
 	 * Two major cases here:
-	 * 1) The object is an actual control method -- execute it.
-	 * 2) The object is not a method -- just return it's current value
 	 *
-	 * In both cases, the namespace is unlocked by the acpi_ns* procedure
+	 * 1) The object is a control method -- execute it
+	 * 2) The object is not a method -- just return it's current value
 	 */
-	if (acpi_ns_get_type(info->node) == ACPI_TYPE_METHOD) {
+	if (acpi_ns_get_type(info->resolved_node) == ACPI_TYPE_METHOD) {
 		/*
-		 * Case 1) We have an actual control method to execute
+		 * 1) Object is a control method - execute it
 		 */
-		status = acpi_ns_execute_control_method(info);
+
+		/* Verify that there is a method object associated with this node */
+
+		info->obj_desc =
+		    acpi_ns_get_attached_object(info->resolved_node);
+		if (!info->obj_desc) {
+			ACPI_ERROR((AE_INFO,
+				    "Control method has no attached sub-object"));
+			return_ACPI_STATUS(AE_NULL_OBJECT);
+		}
+
+		ACPI_DUMP_PATHNAME(info->resolved_node, "Execute Method:",
+				   ACPI_LV_INFO, _COMPONENT);
+
+		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));
+
+		/*
+		 * Any namespace deletion must acquire both the namespace and
+		 * interpreter locks to ensure that no thread is using the portion of
+		 * the namespace that is being deleted.
+		 *
+		 * 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_ps_execute_method(info);
+		acpi_ex_exit_interpreter();
 	} else {
 		/*
-		 * Case 2) Object is NOT a method, just return its current value
+		 * 2) Object is not a method, return its current value
 		 */
-		status = acpi_ns_get_object_value(info);
-	}
 
-	/*
-	 * Check if there is a return value on the stack that must be dealt with
-	 */
-	if (status == AE_CTRL_RETURN_VALUE) {
+		/*
+		 * Objects require additional resolution steps (e.g., the Node may be
+		 * a field that must be read, etc.) -- we can't just grab the object
+		 * out of the node.
+		 *
+		 * Use resolve_node_to_value() to get the associated value.
+		 *
+		 * NOTE: we can get away with passing in NULL for a walk state because
+		 * resolved_node is guaranteed to not be a reference to either a method
+		 * local or a method argument (because this interface is never called
+		 * from a running method.)
+		 *
+		 * Even though we do not directly invoke the interpreter for object
+		 * resolution, we must lock it because we could access an opregion.
+		 * The opregion access code assumes that the interpreter is locked.
+		 */
+		status = acpi_ex_enter_interpreter();
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
+		}
 
-		/* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
+		/* Function has a strange interface */
 
-		status = AE_OK;
-	}
+		status =
+		    acpi_ex_resolve_node_to_value(&info->resolved_node, NULL);
+		acpi_ex_exit_interpreter();
 
-	/*
-	 * Namespace was unlocked by the handling acpi_ns* function, so we
-	 * just return
-	 */
-	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.
- *                  return_object   - Where to put method's return value (if
- *                                    any). If NULL, no value is returned.
- *                  parameter_type  - Type of Parameter list
- *                  return_object   - Where to put method's return value (if
- *                                    any). If NULL, no value is returned.
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Execute the requested method passing the given parameters
- *
- * MUTEX:       Assumes namespace is locked
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ns_execute_control_method(struct acpi_parameter_info *info)
-{
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE(ns_execute_control_method);
-
-	/* Verify that there is a method associated with this object */
-
-	info->obj_desc = acpi_ns_get_attached_object(info->node);
-	if (!info->obj_desc) {
-		ACPI_ERROR((AE_INFO, "No attached method 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_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
-	 * via the external Acpi* interfaces while a method is being executed.
-	 * However, any namespace deletion must acquire both the namespace and
-	 * 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);
-	}
-
-	/*
-	 * 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_ps_execute_method(info);
-	acpi_ex_exit_interpreter();
-
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_get_object_value
- *
- * PARAMETERS:  Info            - Method info block, contains:
- *                  Node            - Object's NS node
- *                  return_object   - Where to put object value (if
- *                                    any). If NULL, no value is returned.
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Return the current value of the object
- *
- * MUTEX:       Assumes namespace is locked, leaves namespace unlocked
- *
- ******************************************************************************/
-
-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);
-
-	/*
-	 * Objects require additional resolution steps (e.g., the Node may be a
-	 * field that must be read, etc.) -- we can't just grab the object out of
-	 * the node.
-	 */
-
-	/*
-	 * Use resolve_node_to_value() to get the associated value. This call always
-	 * deletes obj_desc (allocated above).
-	 *
-	 * NOTE: we can get away with passing in NULL for a walk state because
-	 * obj_desc is guaranteed to not be a reference to either a method local or
-	 * a method argument (because this interface can only be called from the
-	 * acpi_evaluate external interface, never called from a running method.)
-	 *
-	 * Even though we do not directly invoke the interpreter for this, we must
-	 * enter it because we could access an opregion. The opregion access code
-	 * assumes that the interpreter is locked.
-	 *
-	 * 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_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();
-
 		if (ACPI_SUCCESS(status)) {
 			status = AE_CTRL_RETURN_VALUE;
-			info->return_object = ACPI_CAST_PTR
-			    (union acpi_operand_object, resolved_node);
+			info->return_object =
+			    ACPI_CAST_PTR(union acpi_operand_object,
+					  info->resolved_node);
+
 			ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
 					  "Returning object %p [%s]\n",
 					  info->return_object,
@@ -485,7 +211,30 @@
 		}
 	}
 
-	/* Namespace is unlocked */
+	/*
+	 * Check if there is a return value that must be dealt with
+	 */
+	if (status == AE_CTRL_RETURN_VALUE) {
 
+		/* If caller does not want the return value, delete it */
+
+		if (info->flags & ACPI_IGNORE_RETURN_VALUE) {
+			acpi_ut_remove_reference(info->return_object);
+			info->return_object = NULL;
+		}
+
+		/* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
+
+		status = AE_OK;
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+			  "*** Completed evaluation of object %s ***\n",
+			  info->pathname));
+
+	/*
+	 * Namespace was unlocked by the handling acpi_ns* function, so we
+	 * just return
+	 */
 	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
index bf1d8db..1c9ca6e 100644
--- a/drivers/acpi/namespace/nsinit.c
+++ b/drivers/acpi/namespace/nsinit.c
@@ -154,7 +154,16 @@
 					ACPI_UINT32_MAX, FALSE,
 					acpi_ns_find_ini_methods, &info, NULL);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
+		goto error_exit;
+	}
+
+	/* Allocate the evaluation information block */
+
+	info.evaluate_info =
+	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+	if (!info.evaluate_info) {
+		status = AE_NO_MEMORY;
+		goto error_exit;
 	}
 
 	/* Walk namespace to execute all _INIs on present devices */
@@ -162,8 +171,10 @@
 	status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
 					ACPI_UINT32_MAX, FALSE,
 					acpi_ns_init_one_device, &info, NULL);
+
+	ACPI_FREE(info.evaluate_info);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
+		goto error_exit;
 	}
 
 	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
@@ -171,6 +182,10 @@
 			      info.num_INI, info.num_STA, info.device_count));
 
 	return_ACPI_STATUS(status);
+
+      error_exit:
+	ACPI_EXCEPTION((AE_INFO, status, "During device initialization"));
+	return_ACPI_STATUS(status);
 }
 
 /*******************************************************************************
@@ -398,9 +413,9 @@
 acpi_ns_init_one_device(acpi_handle obj_handle,
 			u32 nesting_level, void *context, void **return_value)
 {
-	struct acpi_device_walk_info *info =
+	struct acpi_device_walk_info *walk_info =
 	    ACPI_CAST_PTR(struct acpi_device_walk_info, context);
-	struct acpi_parameter_info pinfo;
+	struct acpi_evaluate_info *info = walk_info->evaluate_info;
 	u32 flags;
 	acpi_status status;
 	struct acpi_namespace_node *device_node;
@@ -460,7 +475,7 @@
 	 * other words, the device is present, ..., and functioning)"
 	 */
 	if (flags != ACPI_UINT32_MAX) {
-		info->num_STA++;
+		walk_info->num_STA++;
 	}
 
 	/*
@@ -516,20 +531,16 @@
 	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
 			(ACPI_TYPE_METHOD, device_node, METHOD_NAME__INI));
 
-	pinfo.node = device_node;
-	pinfo.parameters = NULL;
-	pinfo.parameter_type = ACPI_PARAM_ARGS;
+	info->prefix_node = device_node;
+	info->pathname = METHOD_NAME__INI;
+	info->parameters = NULL;
+	info->parameter_type = ACPI_PARAM_ARGS;
+	info->flags = ACPI_IGNORE_RETURN_VALUE;
 
-	status = acpi_ns_evaluate_relative(METHOD_NAME__INI, &pinfo);
+	status = acpi_ns_evaluate(info);
 	if (ACPI_SUCCESS(status)) {
+		walk_info->num_INI++;
 
-		/* Delete any return object (especially if implicit_return is enabled) */
-
-		if (pinfo.return_object) {
-			acpi_ut_remove_reference(pinfo.return_object);
-		}
-
-		info->num_INI++;
 		if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
 		    (!(acpi_dbg_level & ACPI_LV_INFO))) {
 			ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
@@ -540,20 +551,24 @@
 
 		/* Ignore error and move on to next device */
 
-		char *scope_name = acpi_ns_get_external_pathname(pinfo.node);
+		char *scope_name =
+		    acpi_ns_get_external_pathname(info->resolved_node);
 
 		ACPI_EXCEPTION((AE_INFO, status, "during %s._INI execution",
 				scope_name));
 		ACPI_FREE(scope_name);
+		status = AE_OK;
 	}
 #endif
 
-	/* If an external initialization handler is present, call it */
-
+	/*
+	 * The _INI method has been run if present; call the Global Initialization
+	 * Handler for this device.
+	 */
 	if (acpi_gbl_init_handler) {
 		status =
-		    acpi_gbl_init_handler(pinfo.node, ACPI_INIT_DEVICE_INI);
+		    acpi_gbl_init_handler(device_node, ACPI_INIT_DEVICE_INI);
 	}
 
-	return_ACPI_STATUS(AE_OK);
+	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/namespace/nssearch.c b/drivers/acpi/namespace/nssearch.c
index d247347..500e2bb 100644
--- a/drivers/acpi/namespace/nssearch.c
+++ b/drivers/acpi/namespace/nssearch.c
@@ -56,16 +56,16 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ns_search_node
+ * FUNCTION:    acpi_ns_search_one_scope
  *
  * PARAMETERS:  target_name     - Ascii ACPI name to search for
- *              Node            - Starting node where search will begin
+ *              parent_node     - Starting node where search will begin
  *              Type            - Object type to match
  *              return_node     - Where the matched Named obj is returned
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Search a single level of the namespace.  Performs a
+ * DESCRIPTION: Search a single level of the namespace. Performs a
  *              simple search of the specified level, and does not add
  *              entries or search parents.
  *
@@ -75,32 +75,37 @@
  *
  *      All namespace searching is linear in this implementation, but
  *      could be easily modified to support any improved search
- *      algorithm.  However, the linear search was chosen for simplicity
+ *      algorithm. However, the linear search was chosen for simplicity
  *      and because the trees are small and the other interpreter
  *      execution overhead is relatively high.
  *
+ *      Note: CPU execution analysis has shown that the AML interpreter spends
+ *      a very small percentage of its time searching the namespace. Therefore,
+ *      the linear search seems to be sufficient, as there would seem to be
+ *      little value in improving the search.
+ *
  ******************************************************************************/
 
 acpi_status
-acpi_ns_search_node(u32 target_name,
-		    struct acpi_namespace_node *node,
-		    acpi_object_type type,
-		    struct acpi_namespace_node **return_node)
+acpi_ns_search_one_scope(u32 target_name,
+			 struct acpi_namespace_node *parent_node,
+			 acpi_object_type type,
+			 struct acpi_namespace_node **return_node)
 {
-	struct acpi_namespace_node *next_node;
+	struct acpi_namespace_node *node;
 
-	ACPI_FUNCTION_TRACE(ns_search_node);
+	ACPI_FUNCTION_TRACE(ns_search_one_scope);
 
 #ifdef ACPI_DEBUG_OUTPUT
 	if (ACPI_LV_NAMES & acpi_dbg_level) {
 		char *scope_name;
 
-		scope_name = acpi_ns_get_external_pathname(node);
+		scope_name = acpi_ns_get_external_pathname(parent_node);
 		if (scope_name) {
 			ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
 					  "Searching %s (%p) For [%4.4s] (%s)\n",
-					  scope_name, node, ACPI_CAST_PTR(char,
-									  &target_name),
+					  scope_name, parent_node,
+					  ACPI_CAST_PTR(char, &target_name),
 					  acpi_ut_get_type_name(type)));
 
 			ACPI_FREE(scope_name);
@@ -112,20 +117,20 @@
 	 * Search for name at this namespace level, which is to say that we
 	 * must search for the name among the children of this object
 	 */
-	next_node = node->child;
-	while (next_node) {
+	node = parent_node->child;
+	while (node) {
 
 		/* Check for match against the name */
 
-		if (next_node->name.integer == target_name) {
+		if (node->name.integer == target_name) {
 
 			/* Resolve a control method alias if any */
 
-			if (acpi_ns_get_type(next_node) ==
+			if (acpi_ns_get_type(node) ==
 			    ACPI_TYPE_LOCAL_METHOD_ALIAS) {
-				next_node =
+				node =
 				    ACPI_CAST_PTR(struct acpi_namespace_node,
-						  next_node->object);
+						  node->object);
 			}
 
 			/* Found matching entry */
@@ -133,12 +138,12 @@
 			ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
 					  "Name [%4.4s] (%s) %p found in scope [%4.4s] %p\n",
 					  ACPI_CAST_PTR(char, &target_name),
-					  acpi_ut_get_type_name(next_node->
-								type),
-					  next_node,
-					  acpi_ut_get_node_name(node), node));
+					  acpi_ut_get_type_name(node->type),
+					  node,
+					  acpi_ut_get_node_name(parent_node),
+					  parent_node));
 
-			*return_node = next_node;
+			*return_node = node;
 			return_ACPI_STATUS(AE_OK);
 		}
 
@@ -146,7 +151,7 @@
 		 * The last entry in the list points back to the parent,
 		 * so a flag is used to indicate the end-of-list
 		 */
-		if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
+		if (node->flags & ANOBJ_END_OF_PEER_LIST) {
 
 			/* Searched entire list, we are done */
 
@@ -155,7 +160,7 @@
 
 		/* Didn't match name, move on to the next peer object */
 
-		next_node = next_node->peer;
+		node = node->peer;
 	}
 
 	/* Searched entire namespace level, not found */
@@ -164,7 +169,8 @@
 			  "Name [%4.4s] (%s) not found in search in scope [%4.4s] %p first child %p\n",
 			  ACPI_CAST_PTR(char, &target_name),
 			  acpi_ut_get_type_name(type),
-			  acpi_ut_get_node_name(node), node, node->child));
+			  acpi_ut_get_node_name(parent_node), parent_node,
+			  parent_node->child));
 
 	return_ACPI_STATUS(AE_NOT_FOUND);
 }
@@ -181,14 +187,14 @@
  * RETURN:      Status
  *
  * DESCRIPTION: Called when a name has not been found in the current namespace
- *              level.  Before adding it or giving up, ACPI scope rules require
+ *              level. Before adding it or giving up, ACPI scope rules require
  *              searching enclosing scopes in cases identified by acpi_ns_local().
  *
  *              "A name is located by finding the matching name in the current
  *              name space, and then in the parent name space. If the parent
  *              name space does not contain the name, the search continues
  *              recursively until either the name is found or the name space
- *              does not have a parent (the root of the name space).  This
+ *              does not have a parent (the root of the name space). This
  *              indicates that the name is not found" (From ACPI Specification,
  *              section 5.3)
  *
@@ -237,11 +243,12 @@
 	 */
 	while (parent_node) {
 		/*
-		 * Search parent scope.  Use TYPE_ANY because we don't care about the
+		 * Search parent scope. Use TYPE_ANY because we don't care about the
 		 * object type at this point, we only care about the existence of
-		 * the actual name we are searching for.  Typechecking comes later.
+		 * the actual name we are searching for. Typechecking comes later.
 		 */
-		status = acpi_ns_search_node(target_name, parent_node,
+		status =
+		    acpi_ns_search_one_scope(target_name, parent_node,
 					     ACPI_TYPE_ANY, return_node);
 		if (ACPI_SUCCESS(status)) {
 			return_ACPI_STATUS(status);
@@ -273,7 +280,7 @@
  * RETURN:      Status
  *
  * DESCRIPTION: Search for a name segment in a single namespace level,
- *              optionally adding it if it is not found.  If the passed
+ *              optionally adding it if it is not found. If the passed
  *              Type is not Any and the type previously stored in the
  *              entry was Any (i.e. unknown), update the stored type.
  *
@@ -332,7 +339,7 @@
 	/* Try to find the name in the namespace level specified by the caller */
 
 	*return_node = ACPI_ENTRY_NOT_FOUND;
-	status = acpi_ns_search_node(target_name, node, type, return_node);
+	status = acpi_ns_search_one_scope(target_name, node, type, return_node);
 	if (status != AE_NOT_FOUND) {
 		/*
 		 * If we found it AND the request specifies that a find is an error,
@@ -348,10 +355,10 @@
 	}
 
 	/*
-	 * The name was not found.  If we are NOT performing the first pass
+	 * The name was not found. If we are NOT performing the first pass
 	 * (name entry) of loading the namespace, search the parent tree (all the
 	 * way to the root if necessary.) We don't want to perform the parent
-	 * search when the namespace is actually being loaded.  We want to perform
+	 * search when the namespace is actually being loaded. We want to perform
 	 * the search when namespace references are being resolved (load pass 2)
 	 * and during the execution phase.
 	 */
@@ -386,6 +393,9 @@
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 #ifdef ACPI_ASL_COMPILER
+	/*
+	 * Node is an object defined by an External() statement
+	 */
 	if (flags & ACPI_NS_EXTERNAL) {
 		new_node->flags |= ANOBJ_IS_EXTERNAL;
 	}
diff --git a/drivers/acpi/namespace/nsutils.c b/drivers/acpi/namespace/nsutils.c
index d1d5503..aa4e799 100644
--- a/drivers/acpi/namespace/nsutils.c
+++ b/drivers/acpi/namespace/nsutils.c
@@ -142,8 +142,9 @@
 	acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
 
 	if (path) {
-		status = acpi_ns_get_node_by_path(path, prefix_node,
-						  ACPI_NS_NO_UPSEARCH, &node);
+		status =
+		    acpi_ns_get_node(prefix_node, path, ACPI_NS_NO_UPSEARCH,
+				     &node);
 		if (ACPI_FAILURE(status)) {
 			acpi_os_printf("[Could not get node by pathname]");
 		}
@@ -685,13 +686,9 @@
 	ACPI_FUNCTION_ENTRY();
 
 	/*
-	 * Simple implementation.
+	 * Simple implementation
 	 */
-	if (!handle) {
-		return (NULL);
-	}
-
-	if (handle == ACPI_ROOT_OBJECT) {
+	if ((!handle) || (handle == ACPI_ROOT_OBJECT)) {
 		return (acpi_gbl_root_node);
 	}
 
@@ -701,7 +698,7 @@
 		return (NULL);
 	}
 
-	return ((struct acpi_namespace_node *)handle);
+	return (ACPI_CAST_PTR(struct acpi_namespace_node, handle));
 }
 
 /*******************************************************************************
@@ -811,12 +808,12 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ns_get_node_by_path
+ * FUNCTION:    acpi_ns_get_node
  *
  * PARAMETERS:  *Pathname   - Name to be found, in external (ASL) format. The
  *                            \ (backslash) and ^ (carat) prefixes, and the
  *                            . (period) to separate segments are supported.
- *              start_node  - Root of subtree to be searched, or NS_ALL for the
+ *              prefix_node  - Root of subtree to be searched, or NS_ALL for the
  *                            root of the name space.  If Name is fully
  *                            qualified (first s8 is '\'), the passed value
  *                            of Scope will not be accessed.
@@ -832,24 +829,29 @@
  ******************************************************************************/
 
 acpi_status
-acpi_ns_get_node_by_path(char *pathname,
-			 struct acpi_namespace_node *start_node,
-			 u32 flags, struct acpi_namespace_node **return_node)
+acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
+		 char *pathname,
+		 u32 flags, struct acpi_namespace_node **return_node)
 {
 	union acpi_generic_state scope_info;
 	acpi_status status;
-	char *internal_path = NULL;
+	char *internal_path;
 
-	ACPI_FUNCTION_TRACE_PTR(ns_get_node_by_path, pathname);
+	ACPI_FUNCTION_TRACE_PTR(ns_get_node, pathname);
 
-	if (pathname) {
-
-		/* Convert path to internal representation */
-
-		status = acpi_ns_internalize_name(pathname, &internal_path);
-		if (ACPI_FAILURE(status)) {
-			return_ACPI_STATUS(status);
+	if (!pathname) {
+		*return_node = prefix_node;
+		if (!prefix_node) {
+			*return_node = acpi_gbl_root_node;
 		}
+		return_ACPI_STATUS(AE_OK);
+	}
+
+	/* Convert path to internal representation */
+
+	status = acpi_ns_internalize_name(pathname, &internal_path);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
 	}
 
 	/* Must lock namespace during lookup */
@@ -861,26 +863,23 @@
 
 	/* Setup lookup scope (search starting point) */
 
-	scope_info.scope.node = start_node;
+	scope_info.scope.node = prefix_node;
 
 	/* Lookup the name in the namespace */
 
-	status = acpi_ns_lookup(&scope_info, internal_path,
-				ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
-				(flags | ACPI_NS_DONT_OPEN_SCOPE),
-				NULL, return_node);
+	status = acpi_ns_lookup(&scope_info, internal_path, ACPI_TYPE_ANY,
+				ACPI_IMODE_EXECUTE,
+				(flags | ACPI_NS_DONT_OPEN_SCOPE), NULL,
+				return_node);
 	if (ACPI_FAILURE(status)) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s, %s\n",
-				  internal_path,
-				  acpi_format_exception(status)));
+				  pathname, acpi_format_exception(status)));
 	}
 
 	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 
       cleanup:
-	if (internal_path) {
-		ACPI_FREE(internal_path);
-	}
+	ACPI_FREE(internal_path);
 	return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index 998b296..6d9bd45a 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -171,51 +171,61 @@
 {
 	acpi_status status;
 	acpi_status status2;
-	struct acpi_parameter_info info;
+	struct acpi_evaluate_info *info;
 	acpi_size buffer_space_needed;
 	u32 i;
 
 	ACPI_FUNCTION_TRACE(acpi_evaluate_object);
 
-	info.node = handle;
-	info.parameters = NULL;
-	info.return_object = NULL;
-	info.parameter_type = ACPI_PARAM_ARGS;
+	/* Allocate and initialize the evaluation information block */
+
+	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+	if (!info) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	info->pathname = pathname;
+	info->parameter_type = ACPI_PARAM_ARGS;
+
+	/* Convert and validate the device handle */
+
+	info->prefix_node = acpi_ns_map_handle_to_node(handle);
+	if (!info->prefix_node) {
+		status = AE_BAD_PARAMETER;
+		goto cleanup;
+	}
 
 	/*
-	 * If there are parameters to be passed to the object
-	 * (which must be a control method), the external objects
-	 * must be converted to internal objects
+	 * If there are parameters to be passed to a control method, the external
+	 * objects must all be converted to internal objects
 	 */
 	if (external_params && external_params->count) {
 		/*
 		 * Allocate a new parameter block for the internal objects
 		 * Add 1 to count to allow for null terminated internal list
 		 */
-		info.parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
-							external_params->count +
-							1) * sizeof(void *));
-		if (!info.parameters) {
-			return_ACPI_STATUS(AE_NO_MEMORY);
+		info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
+							 external_params->
+							 count +
+							 1) * sizeof(void *));
+		if (!info->parameters) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
 		}
 
-		/*
-		 * Convert each external object in the list to an
-		 * internal object
-		 */
+		/* Convert each external object in the list to an internal object */
+
 		for (i = 0; i < external_params->count; i++) {
 			status =
 			    acpi_ut_copy_eobject_to_iobject(&external_params->
 							    pointer[i],
-							    &info.
+							    &info->
 							    parameters[i]);
 			if (ACPI_FAILURE(status)) {
-				acpi_ut_delete_internal_object_list(info.
-								    parameters);
-				return_ACPI_STATUS(status);
+				goto cleanup;
 			}
 		}
-		info.parameters[external_params->count] = NULL;
+		info->parameters[external_params->count] = NULL;
 	}
 
 	/*
@@ -228,12 +238,13 @@
 
 		/* The path is fully qualified, just evaluate by name */
 
-		status = acpi_ns_evaluate_by_name(pathname, &info);
+		info->prefix_node = NULL;
+		status = acpi_ns_evaluate(info);
 	} else if (!handle) {
 		/*
-		 * A handle is optional iff a fully qualified pathname
-		 * is specified.  Since we've already handled fully
-		 * qualified names above, this is an error
+		 * A handle is optional iff a fully qualified pathname is specified.
+		 * Since we've already handled fully qualified names above, this is
+		 * an error
 		 */
 		if (!pathname) {
 			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -246,22 +257,9 @@
 
 		status = AE_BAD_PARAMETER;
 	} else {
-		/*
-		 * We get here if we have a handle -- and if we have a
-		 * pathname it is relative.  The handle will be validated
-		 * in the lower procedures
-		 */
-		if (!pathname) {
-			/*
-			 * The null pathname case means the handle is for
-			 * the actual object to be evaluated
-			 */
-			status = acpi_ns_evaluate_by_handle(&info);
-		} else {
-			/* Both a Handle and a relative Pathname */
+		/* We have a namespace a node and a possible relative path */
 
-			status = acpi_ns_evaluate_relative(pathname, &info);
-		}
+		status = acpi_ns_evaluate(info);
 	}
 
 	/*
@@ -269,10 +267,10 @@
 	 * copy the return value to an external object.
 	 */
 	if (return_buffer) {
-		if (!info.return_object) {
+		if (!info->return_object) {
 			return_buffer->length = 0;
 		} else {
-			if (ACPI_GET_DESCRIPTOR_TYPE(info.return_object) ==
+			if (ACPI_GET_DESCRIPTOR_TYPE(info->return_object) ==
 			    ACPI_DESC_TYPE_NAMED) {
 				/*
 				 * If we received a NS Node as a return object, this means that
@@ -283,17 +281,16 @@
 				 * support for various types at a later date if necessary.
 				 */
 				status = AE_TYPE;
-				info.return_object = NULL;	/* No need to delete a NS Node */
+				info->return_object = NULL;	/* No need to delete a NS Node */
 				return_buffer->length = 0;
 			}
 
 			if (ACPI_SUCCESS(status)) {
-				/*
-				 * Find out how large a buffer is needed
-				 * to contain the returned object
-				 */
+
+				/* Get the size of the returned object */
+
 				status =
-				    acpi_ut_get_object_size(info.return_object,
+				    acpi_ut_get_object_size(info->return_object,
 							    &buffer_space_needed);
 				if (ACPI_SUCCESS(status)) {
 
@@ -319,7 +316,7 @@
 
 						status =
 						    acpi_ut_copy_iobject_to_eobject
-						    (info.return_object,
+						    (info->return_object,
 						     return_buffer);
 					}
 				}
@@ -327,31 +324,33 @@
 		}
 	}
 
-	if (info.return_object) {
+	if (info->return_object) {
 		/*
-		 * Delete the internal return object.  NOTE: Interpreter
-		 * must be locked to avoid race condition.
+		 * Delete the internal return object. NOTE: Interpreter must be
+		 * locked to avoid race condition.
 		 */
 		status2 = acpi_ex_enter_interpreter();
 		if (ACPI_SUCCESS(status2)) {
-			/*
-			 * Delete the internal return object. (Or at least
-			 * decrement the reference count by one)
-			 */
-			acpi_ut_remove_reference(info.return_object);
+
+			/* Remove one reference on the return object (should delete it) */
+
+			acpi_ut_remove_reference(info->return_object);
 			acpi_ex_exit_interpreter();
 		}
 	}
 
+      cleanup:
+
 	/* Free the input parameter list (if we created one) */
 
-	if (info.parameters) {
+	if (info->parameters) {
 
 		/* Free the allocated parameter block */
 
-		acpi_ut_delete_internal_object_list(info.parameters);
+		acpi_ut_delete_internal_object_list(info->parameters);
 	}
 
+	ACPI_FREE(info);
 	return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/namespace/nsxfname.c b/drivers/acpi/namespace/nsxfname.c
index 1303e2b..978213a 100644
--- a/drivers/acpi/namespace/nsxfname.c
+++ b/drivers/acpi/namespace/nsxfname.c
@@ -112,9 +112,8 @@
 	/*
 	 *  Find the Node and convert to a handle
 	 */
-	status =
-	    acpi_ns_get_node_by_path(pathname, prefix_node, ACPI_NS_NO_UPSEARCH,
-				     &node);
+	status = acpi_ns_get_node(prefix_node, pathname, ACPI_NS_NO_UPSEARCH,
+				  &node);
 
 	*ret_handle = NULL;
 	if (ACPI_SUCCESS(status)) {
diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c
index 796f6b7..7ee2f2e 100644
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/parser/psparse.c
@@ -464,6 +464,7 @@
 
 	thread = acpi_ut_create_thread_state();
 	if (!thread) {
+		acpi_ds_delete_walk_state(walk_state);
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
diff --git a/drivers/acpi/parser/psxface.c b/drivers/acpi/parser/psxface.c
index 6b1411f..5d996c1 100644
--- a/drivers/acpi/parser/psxface.c
+++ b/drivers/acpi/parser/psxface.c
@@ -50,14 +50,14 @@
 ACPI_MODULE_NAME("psxface")
 
 /* Local Prototypes */
-static void acpi_ps_start_trace(struct acpi_parameter_info *info);
+static void acpi_ps_start_trace(struct acpi_evaluate_info *info);
 
-static void acpi_ps_stop_trace(struct acpi_parameter_info *info);
+static void acpi_ps_stop_trace(struct acpi_evaluate_info *info);
 
-static acpi_status acpi_ps_execute_pass(struct acpi_parameter_info *info);
+static acpi_status acpi_ps_execute_pass(struct acpi_evaluate_info *info);
 
 static void
-acpi_ps_update_parameter_list(struct acpi_parameter_info *info, u16 action);
+acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);
 
 /*******************************************************************************
  *
@@ -113,7 +113,7 @@
  *
  ******************************************************************************/
 
-static void acpi_ps_start_trace(struct acpi_parameter_info *info)
+static void acpi_ps_start_trace(struct acpi_evaluate_info *info)
 {
 	acpi_status status;
 
@@ -125,7 +125,7 @@
 	}
 
 	if ((!acpi_gbl_trace_method_name) ||
-	    (acpi_gbl_trace_method_name != info->node->name.integer)) {
+	    (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
 		goto exit;
 	}
 
@@ -158,7 +158,7 @@
  *
  ******************************************************************************/
 
-static void acpi_ps_stop_trace(struct acpi_parameter_info *info)
+static void acpi_ps_stop_trace(struct acpi_evaluate_info *info)
 {
 	acpi_status status;
 
@@ -170,7 +170,7 @@
 	}
 
 	if ((!acpi_gbl_trace_method_name) ||
-	    (acpi_gbl_trace_method_name != info->node->name.integer)) {
+	    (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
 		goto exit;
 	}
 
@@ -212,7 +212,7 @@
  *
  ******************************************************************************/
 
-acpi_status acpi_ps_execute_method(struct acpi_parameter_info *info)
+acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
 {
 	acpi_status status;
 
@@ -220,14 +220,15 @@
 
 	/* Validate the Info and method Node */
 
-	if (!info || !info->node) {
+	if (!info || !info->resolved_node) {
 		return_ACPI_STATUS(AE_NULL_ENTRY);
 	}
 
 	/* Init for new method, wait on concurrency semaphore */
 
 	status =
-	    acpi_ds_begin_method_execution(info->node, info->obj_desc, NULL);
+	    acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
+					   NULL);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
@@ -248,7 +249,7 @@
 	 */
 	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 			  "**** Begin Method Parse **** Entry=%p obj=%p\n",
-			  info->node, info->obj_desc));
+			  info->resolved_node, info->obj_desc));
 
 	info->pass_number = 1;
 	status = acpi_ps_execute_pass(info);
@@ -261,7 +262,7 @@
 	 */
 	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 			  "**** Begin Method Execution **** Entry=%p obj=%p\n",
-			  info->node, info->obj_desc));
+			  info->resolved_node, info->obj_desc));
 
 	info->pass_number = 3;
 	status = acpi_ps_execute_pass(info);
@@ -300,7 +301,7 @@
  *
  * FUNCTION:    acpi_ps_update_parameter_list
  *
- * PARAMETERS:  Info            - See struct acpi_parameter_info
+ * PARAMETERS:  Info            - See struct acpi_evaluate_info
  *                                (Used: parameter_type and Parameters)
  *              Action          - Add or Remove reference
  *
@@ -311,7 +312,7 @@
  ******************************************************************************/
 
 static void
-acpi_ps_update_parameter_list(struct acpi_parameter_info *info, u16 action)
+acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action)
 {
 	acpi_native_uint i;
 
@@ -334,7 +335,7 @@
  *
  * FUNCTION:    acpi_ps_execute_pass
  *
- * PARAMETERS:  Info            - See struct acpi_parameter_info
+ * PARAMETERS:  Info            - See struct acpi_evaluate_info
  *                                (Used: pass_number, Node, and obj_desc)
  *
  * RETURN:      Status
@@ -343,7 +344,7 @@
  *
  ******************************************************************************/
 
-static acpi_status acpi_ps_execute_pass(struct acpi_parameter_info *info)
+static acpi_status acpi_ps_execute_pass(struct acpi_evaluate_info *info)
 {
 	acpi_status status;
 	union acpi_parse_object *op;
@@ -368,7 +369,7 @@
 		goto cleanup;
 	}
 
-	status = acpi_ds_init_aml_walk(walk_state, op, info->node,
+	status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
 				       info->obj_desc->method.aml_start,
 				       info->obj_desc->method.aml_length,
 				       info->pass_number == 1 ? NULL : info,
diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/resources/rsutils.c
index 0e493f2..a9cbee8 100644
--- a/drivers/acpi/resources/rsutils.c
+++ b/drivers/acpi/resources/rsutils.c
@@ -442,7 +442,7 @@
  *
  * FUNCTION:    acpi_rs_get_prt_method_data
  *
- * PARAMETERS:  Handle          - Handle to the containing object
+ * PARAMETERS:  Node            - Device node
  *              ret_buffer      - Pointer to a buffer structure for the
  *                                results
  *
@@ -457,7 +457,8 @@
  ******************************************************************************/
 
 acpi_status
-acpi_rs_get_prt_method_data(acpi_handle handle, struct acpi_buffer * ret_buffer)
+acpi_rs_get_prt_method_data(struct acpi_namespace_node * node,
+			    struct acpi_buffer * ret_buffer)
 {
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
@@ -468,7 +469,7 @@
 
 	/* Execute the method, no parameters */
 
-	status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRT,
+	status = acpi_ut_evaluate_object(node, METHOD_NAME__PRT,
 					 ACPI_BTYPE_PACKAGE, &obj_desc);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
@@ -490,7 +491,7 @@
  *
  * FUNCTION:    acpi_rs_get_crs_method_data
  *
- * PARAMETERS:  Handle          - Handle to the containing object
+ * PARAMETERS:  Node            - Device node
  *              ret_buffer      - Pointer to a buffer structure for the
  *                                results
  *
@@ -505,7 +506,8 @@
  ******************************************************************************/
 
 acpi_status
-acpi_rs_get_crs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
+acpi_rs_get_crs_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer)
 {
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
@@ -516,7 +518,7 @@
 
 	/* Execute the method, no parameters */
 
-	status = acpi_ut_evaluate_object(handle, METHOD_NAME__CRS,
+	status = acpi_ut_evaluate_object(node, METHOD_NAME__CRS,
 					 ACPI_BTYPE_BUFFER, &obj_desc);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
@@ -539,7 +541,7 @@
  *
  * FUNCTION:    acpi_rs_get_prs_method_data
  *
- * PARAMETERS:  Handle          - Handle to the containing object
+ * PARAMETERS:  Node            - Device node
  *              ret_buffer      - Pointer to a buffer structure for the
  *                                results
  *
@@ -555,7 +557,8 @@
 
 #ifdef ACPI_FUTURE_USAGE
 acpi_status
-acpi_rs_get_prs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer)
+acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer)
 {
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
@@ -566,7 +569,7 @@
 
 	/* Execute the method, no parameters */
 
-	status = acpi_ut_evaluate_object(handle, METHOD_NAME__PRS,
+	status = acpi_ut_evaluate_object(node, METHOD_NAME__PRS,
 					 ACPI_BTYPE_BUFFER, &obj_desc);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
@@ -641,7 +644,7 @@
  *
  * FUNCTION:    acpi_rs_set_srs_method_data
  *
- * PARAMETERS:  Handle          - Handle to the containing object
+ * PARAMETERS:  Node            - Device node
  *              in_buffer       - Pointer to a buffer structure of the
  *                                parameter
  *
@@ -653,23 +656,37 @@
  *              If the function fails an appropriate status will be returned
  *              and the contents of the callers buffer is undefined.
  *
+ * Note: Parameters guaranteed valid by caller
+ *
  ******************************************************************************/
 
 acpi_status
-acpi_rs_set_srs_method_data(acpi_handle handle, struct acpi_buffer *in_buffer)
+acpi_rs_set_srs_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *in_buffer)
 {
-	struct acpi_parameter_info info;
-	union acpi_operand_object *params[2];
+	struct acpi_evaluate_info *info;
+	union acpi_operand_object *args[2];
 	acpi_status status;
 	struct acpi_buffer buffer;
 
 	ACPI_FUNCTION_TRACE(rs_set_srs_method_data);
 
-	/* Parameters guaranteed valid by caller */
+	/* Allocate and initialize the evaluation information block */
+
+	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+	if (!info) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	info->prefix_node = node;
+	info->pathname = METHOD_NAME__SRS;
+	info->parameters = args;
+	info->parameter_type = ACPI_PARAM_ARGS;
+	info->flags = ACPI_IGNORE_RETURN_VALUE;
 
 	/*
 	 * The in_buffer parameter will point to a linked list of
-	 * resource parameters.  It needs to be formatted into a
+	 * resource parameters. It needs to be formatted into a
 	 * byte stream to be sent in as an input parameter to _SRS
 	 *
 	 * Convert the linked list into a byte stream
@@ -677,42 +694,36 @@
 	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
 	status = acpi_rs_create_aml_resources(in_buffer->pointer, &buffer);
 	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
+		goto cleanup;
 	}
 
-	/* Init the param object */
+	/* Create and initialize the method parameter object */
 
-	params[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
-	if (!params[0]) {
-		acpi_os_free(buffer.pointer);
-		return_ACPI_STATUS(AE_NO_MEMORY);
+	args[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
+	if (!args[0]) {
+		/*
+		 * Must free the buffer allocated above (otherwise it is freed
+		 * later)
+		 */
+		ACPI_FREE(buffer.pointer);
+		status = AE_NO_MEMORY;
+		goto cleanup;
 	}
 
-	/* Set up the parameter object */
+	args[0]->buffer.length = (u32) buffer.length;
+	args[0]->buffer.pointer = buffer.pointer;
+	args[0]->common.flags = AOPOBJ_DATA_VALID;
+	args[1] = NULL;
 
-	params[0]->buffer.length = (u32) buffer.length;
-	params[0]->buffer.pointer = buffer.pointer;
-	params[0]->common.flags = AOPOBJ_DATA_VALID;
-	params[1] = NULL;
+	/* Execute the method, no return value is expected */
 
-	info.node = handle;
-	info.parameters = params;
-	info.parameter_type = ACPI_PARAM_ARGS;
+	status = acpi_ns_evaluate(info);
 
-	/* Execute the method, no return value */
+	/* Clean up and return the status from acpi_ns_evaluate */
 
-	status = acpi_ns_evaluate_relative(METHOD_NAME__SRS, &info);
-	if (ACPI_SUCCESS(status)) {
+	acpi_ut_remove_reference(args[0]);
 
-		/* Delete any return object (especially if implicit_return is enabled) */
-
-		if (info.return_object) {
-			acpi_ut_remove_reference(info.return_object);
-		}
-	}
-
-	/* Clean up and return the status from acpi_ns_evaluate_relative */
-
-	acpi_ut_remove_reference(params[0]);
+      cleanup:
+	ACPI_FREE(info);
 	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/resources/rsxface.c b/drivers/acpi/resources/rsxface.c
index 8c1628c..1999e2a 100644
--- a/drivers/acpi/resources/rsxface.c
+++ b/drivers/acpi/resources/rsxface.c
@@ -43,6 +43,7 @@
 
 #include <acpi/acpi.h>
 #include <acpi/acresrc.h>
+#include <acpi/acnamesp.h>
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsxface")
@@ -66,19 +67,80 @@
 static acpi_status
 acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context);
 
+static acpi_status
+acpi_rs_validate_parameters(acpi_handle device_handle,
+			    struct acpi_buffer *buffer,
+			    struct acpi_namespace_node **return_node);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_validate_parameters
+ *
+ * PARAMETERS:  device_handle   - Handle to a device
+ *              Buffer          - Pointer to a data buffer
+ *              return_node     - Pointer to where the device node is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Common parameter validation for resource interfaces
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_rs_validate_parameters(acpi_handle device_handle,
+			    struct acpi_buffer *buffer,
+			    struct acpi_namespace_node **return_node)
+{
+	acpi_status status;
+	struct acpi_namespace_node *node;
+
+	ACPI_FUNCTION_TRACE(rs_validate_parameters);
+
+	/*
+	 * Must have a valid handle to an ACPI device
+	 */
+	if (!device_handle) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	node = acpi_ns_map_handle_to_node(device_handle);
+	if (!node) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	if (node->type != ACPI_TYPE_DEVICE) {
+		return_ACPI_STATUS(AE_TYPE);
+	}
+
+	/*
+	 * Validate the user buffer object
+	 *
+	 * if there is a non-zero buffer length we also need a valid pointer in
+	 * the buffer. If it's a zero buffer length, we'll be returning the
+	 * needed buffer size (later), so keep going.
+	 */
+	status = acpi_ut_validate_buffer(buffer);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	*return_node = node;
+	return_ACPI_STATUS(AE_OK);
+}
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_get_irq_routing_table
  *
- * PARAMETERS:  device_handle   - a handle to the Bus device we are querying
- *              ret_buffer      - a pointer to a buffer to receive the
+ * PARAMETERS:  device_handle   - Handle to the Bus device we are querying
+ *              ret_buffer      - Pointer to a buffer to receive the
  *                                current resources for the device
  *
  * RETURN:      Status
  *
  * DESCRIPTION: This function is called to get the IRQ routing table for a
- *              specific bus.  The caller must first acquire a handle for the
- *              desired bus.  The routine table is placed in the buffer pointed
+ *              specific bus. The caller must first acquire a handle for the
+ *              desired bus. The routine table is placed in the buffer pointed
  *              to by the ret_buffer variable parameter.
  *
  *              If the function fails an appropriate status will be returned
@@ -94,25 +156,18 @@
 			   struct acpi_buffer *ret_buffer)
 {
 	acpi_status status;
+	struct acpi_namespace_node *node;
 
 	ACPI_FUNCTION_TRACE(acpi_get_irq_routing_table);
 
-	/*
-	 * Must have a valid handle and buffer, So we have to have a handle
-	 * and a return buffer structure, and if there is a non-zero buffer length
-	 * we also need a valid pointer in the buffer. If it's a zero buffer length,
-	 * we'll be returning the needed buffer size, so keep going.
-	 */
-	if (!device_handle) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
+	/* Validate parameters then dispatch to internal routine */
 
-	status = acpi_ut_validate_buffer(ret_buffer);
+	status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
 
-	status = acpi_rs_get_prt_method_data(device_handle, ret_buffer);
+	status = acpi_rs_get_prt_method_data(node, ret_buffer);
 	return_ACPI_STATUS(status);
 }
 
@@ -122,16 +177,16 @@
  *
  * FUNCTION:    acpi_get_current_resources
  *
- * PARAMETERS:  device_handle   - a handle to the device object for the
+ * PARAMETERS:  device_handle   - Handle to the device object for the
  *                                device we are querying
- *              ret_buffer      - a pointer to a buffer to receive the
+ *              ret_buffer      - Pointer to a buffer to receive the
  *                                current resources for the device
  *
  * RETURN:      Status
  *
  * DESCRIPTION: This function is called to get the current resources for a
- *              specific device.  The caller must first acquire a handle for
- *              the desired device.  The resource data is placed in the buffer
+ *              specific device. The caller must first acquire a handle for
+ *              the desired device. The resource data is placed in the buffer
  *              pointed to by the ret_buffer variable parameter.
  *
  *              If the function fails an appropriate status will be returned
@@ -146,25 +201,18 @@
 			   struct acpi_buffer *ret_buffer)
 {
 	acpi_status status;
+	struct acpi_namespace_node *node;
 
 	ACPI_FUNCTION_TRACE(acpi_get_current_resources);
 
-	/*
-	 * Must have a valid handle and buffer, So we have to have a handle
-	 * and a return buffer structure, and if there is a non-zero buffer length
-	 * we also need a valid pointer in the buffer. If it's a zero buffer length,
-	 * we'll be returning the needed buffer size, so keep going.
-	 */
-	if (!device_handle) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
+	/* Validate parameters then dispatch to internal routine */
 
-	status = acpi_ut_validate_buffer(ret_buffer);
+	status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
 
-	status = acpi_rs_get_crs_method_data(device_handle, ret_buffer);
+	status = acpi_rs_get_crs_method_data(node, ret_buffer);
 	return_ACPI_STATUS(status);
 }
 
@@ -175,16 +223,16 @@
  *
  * FUNCTION:    acpi_get_possible_resources
  *
- * PARAMETERS:  device_handle   - a handle to the device object for the
+ * PARAMETERS:  device_handle   - Handle to the device object for the
  *                                device we are querying
- *              ret_buffer      - a pointer to a buffer to receive the
+ *              ret_buffer      - Pointer to a buffer to receive the
  *                                resources for the device
  *
  * RETURN:      Status
  *
  * DESCRIPTION: This function is called to get a list of the possible resources
- *              for a specific device.  The caller must first acquire a handle
- *              for the desired device.  The resource data is placed in the
+ *              for a specific device. The caller must first acquire a handle
+ *              for the desired device. The resource data is placed in the
  *              buffer pointed to by the ret_buffer variable.
  *
  *              If the function fails an appropriate status will be returned
@@ -196,25 +244,18 @@
 			    struct acpi_buffer *ret_buffer)
 {
 	acpi_status status;
+	struct acpi_namespace_node *node;
 
 	ACPI_FUNCTION_TRACE(acpi_get_possible_resources);
 
-	/*
-	 * Must have a valid handle and buffer, So we have to have a handle
-	 * and a return buffer structure, and if there is a non-zero buffer length
-	 * we also need a valid pointer in the buffer. If it's a zero buffer length,
-	 * we'll be returning the needed buffer size, so keep going.
-	 */
-	if (!device_handle) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
+	/* Validate parameters then dispatch to internal routine */
 
-	status = acpi_ut_validate_buffer(ret_buffer);
+	status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
 
-	status = acpi_rs_get_prs_method_data(device_handle, ret_buffer);
+	status = acpi_rs_get_prs_method_data(node, ret_buffer);
 	return_ACPI_STATUS(status);
 }
 
@@ -223,113 +264,18 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_walk_resources
- *
- * PARAMETERS:  device_handle   - Handle to the device object for the
- *                                device we are querying
- *              Name            - Method name of the resources we want
- *                                (METHOD_NAME__CRS or METHOD_NAME__PRS)
- *              user_function   - Called for each resource
- *              Context         - Passed to user_function
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Retrieves the current or possible resource list for the
- *              specified device.  The user_function is called once for
- *              each resource in the list.
- *
- ******************************************************************************/
-acpi_status
-acpi_walk_resources(acpi_handle device_handle,
-		    char *name,
-		    acpi_walk_resource_callback user_function, void *context)
-{
-	acpi_status status;
-	struct acpi_buffer buffer;
-	struct acpi_resource *resource;
-	struct acpi_resource *resource_end;
-
-	ACPI_FUNCTION_TRACE(acpi_walk_resources);
-
-	/* Parameter validation */
-
-	if (!device_handle || !user_function || !name ||
-	    (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
-	     !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS))) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/* Get the _CRS or _PRS resource list */
-
-	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
-	status = acpi_rs_get_method_data(device_handle, name, &buffer);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	/* Buffer now contains the resource list */
-
-	resource = ACPI_CAST_PTR(struct acpi_resource, buffer.pointer);
-	resource_end =
-	    ACPI_ADD_PTR(struct acpi_resource, buffer.pointer, buffer.length);
-
-	/* Walk the resource list until the end_tag is found (or buffer end) */
-
-	while (resource < resource_end) {
-
-		/* Sanity check the resource */
-
-		if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
-			status = AE_AML_INVALID_RESOURCE_TYPE;
-			break;
-		}
-
-		/* Invoke the user function, abort on any error returned */
-
-		status = user_function(resource, context);
-		if (ACPI_FAILURE(status)) {
-			if (status == AE_CTRL_TERMINATE) {
-
-				/* This is an OK termination by the user function */
-
-				status = AE_OK;
-			}
-			break;
-		}
-
-		/* end_tag indicates end-of-list */
-
-		if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
-			break;
-		}
-
-		/* Get the next resource descriptor */
-
-		resource =
-		    ACPI_ADD_PTR(struct acpi_resource, resource,
-				 resource->length);
-	}
-
-	ACPI_FREE(buffer.pointer);
-	return_ACPI_STATUS(status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_walk_resources)
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_set_current_resources
  *
- * PARAMETERS:  device_handle   - a handle to the device object for the
- *                                device we are changing the resources of
- *              in_buffer       - a pointer to a buffer containing the
+ * PARAMETERS:  device_handle   - Handle to the device object for the
+ *                                device we are setting resources
+ *              in_buffer       - Pointer to a buffer containing the
  *                                resources to be set for the device
  *
  * RETURN:      Status
  *
  * DESCRIPTION: This function is called to set the current resources for a
- *              specific device.  The caller must first acquire a handle for
- *              the desired device.  The resource data is passed to the routine
+ *              specific device. The caller must first acquire a handle for
+ *              the desired device. The resource data is passed to the routine
  *              the buffer pointed to by the in_buffer variable.
  *
  ******************************************************************************/
@@ -338,17 +284,24 @@
 			   struct acpi_buffer *in_buffer)
 {
 	acpi_status status;
+	struct acpi_namespace_node *node;
 
 	ACPI_FUNCTION_TRACE(acpi_set_current_resources);
 
-	/* Must have a valid handle and buffer */
+	/* Validate the buffer, don't allow zero length */
 
-	if ((!device_handle) ||
-	    (!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) {
+	if ((!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) {
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	status = acpi_rs_set_srs_method_data(device_handle, in_buffer);
+	/* Validate parameters then dispatch to internal routine */
+
+	status = acpi_rs_validate_parameters(device_handle, in_buffer, &node);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	status = acpi_rs_set_srs_method_data(node, in_buffer);
 	return_ACPI_STATUS(status);
 }
 
@@ -358,15 +311,14 @@
  *
  * FUNCTION:    acpi_resource_to_address64
  *
- * PARAMETERS:  Resource                - Pointer to a resource
- *              Out                     - Pointer to the users's return
- *                                        buffer (a struct
- *                                        struct acpi_resource_address64)
+ * PARAMETERS:  Resource        - Pointer to a resource
+ *              Out             - Pointer to the users's return buffer
+ *                                (a struct acpi_resource_address64)
  *
  * RETURN:      Status
  *
  * DESCRIPTION: If the resource is an address16, address32, or address64,
- *              copy it to the address64 return buffer.  This saves the
+ *              copy it to the address64 return buffer. This saves the
  *              caller from having to duplicate code for different-sized
  *              addresses.
  *
@@ -418,12 +370,12 @@
  *
  * FUNCTION:    acpi_get_vendor_resource
  *
- * PARAMETERS:  device_handle       - Handle for the parent device object
- *              Name                - Method name for the parent resource
- *                                    (METHOD_NAME__CRS or METHOD_NAME__PRS)
- *              Uuid                - Pointer to the UUID to be matched.
- *                                    includes both subtype and 16-byte UUID
- *              ret_buffer          - Where the vendor resource is returned
+ * PARAMETERS:  device_handle   - Handle for the parent device object
+ *              Name            - Method name for the parent resource
+ *                                (METHOD_NAME__CRS or METHOD_NAME__PRS)
+ *              Uuid            - Pointer to the UUID to be matched.
+ *                                includes both subtype and 16-byte UUID
+ *              ret_buffer      - Where the vendor resource is returned
  *
  * RETURN:      Status
  *
@@ -525,3 +477,99 @@
 }
 
 ACPI_EXPORT_SYMBOL(acpi_rs_match_vendor_resource)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_walk_resources
+ *
+ * PARAMETERS:  device_handle   - Handle to the device object for the
+ *                                device we are querying
+ *              Name            - Method name of the resources we want
+ *                                (METHOD_NAME__CRS or METHOD_NAME__PRS)
+ *              user_function   - Called for each resource
+ *              Context         - Passed to user_function
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Retrieves the current or possible resource list for the
+ *              specified device. The user_function is called once for
+ *              each resource in the list.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_walk_resources(acpi_handle device_handle,
+		    char *name,
+		    acpi_walk_resource_callback user_function, void *context)
+{
+	acpi_status status;
+	struct acpi_buffer buffer;
+	struct acpi_resource *resource;
+	struct acpi_resource *resource_end;
+
+	ACPI_FUNCTION_TRACE(acpi_walk_resources);
+
+	/* Parameter validation */
+
+	if (!device_handle || !user_function || !name ||
+	    (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
+	     !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS))) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	/* Get the _CRS or _PRS resource list */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	status = acpi_rs_get_method_data(device_handle, name, &buffer);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Buffer now contains the resource list */
+
+	resource = ACPI_CAST_PTR(struct acpi_resource, buffer.pointer);
+	resource_end =
+	    ACPI_ADD_PTR(struct acpi_resource, buffer.pointer, buffer.length);
+
+	/* Walk the resource list until the end_tag is found (or buffer end) */
+
+	while (resource < resource_end) {
+
+		/* Sanity check the resource */
+
+		if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
+			status = AE_AML_INVALID_RESOURCE_TYPE;
+			break;
+		}
+
+		/* Invoke the user function, abort on any error returned */
+
+		status = user_function(resource, context);
+		if (ACPI_FAILURE(status)) {
+			if (status == AE_CTRL_TERMINATE) {
+
+				/* This is an OK termination by the user function */
+
+				status = AE_OK;
+			}
+			break;
+		}
+
+		/* end_tag indicates end-of-list */
+
+		if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
+			break;
+		}
+
+		/* Get the next resource descriptor */
+
+		resource =
+		    ACPI_ADD_PTR(struct acpi_resource, resource,
+				 resource->length);
+	}
+
+	ACPI_FREE(buffer.pointer);
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_walk_resources)
diff --git a/drivers/acpi/tables/tbget.c b/drivers/acpi/tables/tbget.c
index 3a4f46c..99eacce 100644
--- a/drivers/acpi/tables/tbget.c
+++ b/drivers/acpi/tables/tbget.c
@@ -417,7 +417,7 @@
  *
  * PARAMETERS:  table_type      - one of the defined table types
  *              Instance        - Which table of this type
- *              table_ptr_loc   - pointer to location to place the pointer for
+ *              return_table    - pointer to location to place the pointer for
  *                                return
  *
  * RETURN:      Status
@@ -428,58 +428,34 @@
 
 acpi_status
 acpi_tb_get_table_ptr(acpi_table_type table_type,
-		      u32 instance, struct acpi_table_header **table_ptr_loc)
+		      u32 instance, struct acpi_table_header **return_table)
 {
 	struct acpi_table_desc *table_desc;
 	u32 i;
 
 	ACPI_FUNCTION_TRACE(tb_get_table_ptr);
 
-	if (!acpi_gbl_DSDT) {
-		return_ACPI_STATUS(AE_NO_ACPI_TABLES);
-	}
-
 	if (table_type > ACPI_TABLE_ID_MAX) {
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	/*
-	 * For all table types (Single/Multiple), the first
-	 * instance is always in the list head.
-	 */
-	if (instance == 1) {
-
-		/* Get the first */
-
-		*table_ptr_loc = NULL;
-		if (acpi_gbl_table_lists[table_type].next) {
-			*table_ptr_loc =
-			    acpi_gbl_table_lists[table_type].next->pointer;
-		}
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/* Check for instance out of range */
+	/* Check for instance out of range of the current table count */
 
 	if (instance > acpi_gbl_table_lists[table_type].count) {
 		return_ACPI_STATUS(AE_NOT_EXIST);
 	}
 
-	/* Walk the list to get the desired table
-	 * Since the if (Instance == 1) check above checked for the
-	 * first table, setting table_desc equal to the .Next member
-	 * is actually pointing to the second table.  Therefore, we
-	 * need to walk from the 2nd table until we reach the Instance
-	 * that the user is looking for and return its table pointer.
+	/*
+	 * Walk the list to get the desired table
+	 * Note: Instance is one-based
 	 */
 	table_desc = acpi_gbl_table_lists[table_type].next;
-	for (i = 2; i < instance; i++) {
+	for (i = 1; i < instance; i++) {
 		table_desc = table_desc->next;
 	}
 
 	/* We are now pointing to the requested table's descriptor */
 
-	*table_ptr_loc = table_desc->pointer;
-
+	*return_table = table_desc->pointer;
 	return_ACPI_STATUS(AE_OK);
 }
diff --git a/drivers/acpi/tables/tbrsdt.c b/drivers/acpi/tables/tbrsdt.c
index 4949652..abcb08c 100644
--- a/drivers/acpi/tables/tbrsdt.c
+++ b/drivers/acpi/tables/tbrsdt.c
@@ -78,7 +78,7 @@
 		 */
 		status = acpi_os_map_memory(address->pointer.physical,
 					    sizeof(struct rsdp_descriptor),
-					    (void *)&rsdp);
+					    ACPI_CAST_PTR(void, &rsdp));
 		if (ACPI_FAILURE(status)) {
 			return_ACPI_STATUS(status);
 		}
@@ -95,11 +95,16 @@
 		goto cleanup;
 	}
 
-	/* The RSDP supplied is OK */
+	/* RSDP is ok. Init the table info */
 
 	table_info.pointer = ACPI_CAST_PTR(struct acpi_table_header, rsdp);
 	table_info.length = sizeof(struct rsdp_descriptor);
-	table_info.allocation = ACPI_MEM_MAPPED;
+
+	if (address->pointer_type == ACPI_PHYSICAL_POINTER) {
+		table_info.allocation = ACPI_MEM_MAPPED;
+	} else {
+		table_info.allocation = ACPI_MEM_NOT_ALLOCATED;
+	}
 
 	/* Save the table pointers and allocation info */
 
diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c
index 65a7c2e..7940fc1 100644
--- a/drivers/acpi/utilities/utalloc.c
+++ b/drivers/acpi/utilities/utalloc.c
@@ -61,24 +61,6 @@
 {
 	acpi_status status;
 
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-
-	/* Memory allocation lists */
-
-	status = acpi_ut_create_list("Acpi-Global", 0, &acpi_gbl_global_list);
-	if (ACPI_FAILURE(status)) {
-		return (status);
-	}
-
-	status =
-	    acpi_ut_create_list("Acpi-Namespace",
-				sizeof(struct acpi_namespace_node),
-				&acpi_gbl_ns_node_list);
-	if (ACPI_FAILURE(status)) {
-		return (status);
-	}
-#endif
-
 	/* Object Caches, for frequently used objects */
 
 	status =
@@ -125,6 +107,24 @@
 		return (status);
 	}
 
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+
+	/* Memory allocation lists */
+
+	status = acpi_ut_create_list("Acpi-Global", 0, &acpi_gbl_global_list);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	status =
+	    acpi_ut_create_list("Acpi-Namespace",
+				sizeof(struct acpi_namespace_node),
+				&acpi_gbl_ns_node_list);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+#endif
+
 	return (AE_OK);
 }
 
@@ -158,6 +158,21 @@
 	(void)acpi_os_delete_cache(acpi_gbl_ps_node_ext_cache);
 	acpi_gbl_ps_node_ext_cache = NULL;
 
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+
+	/* Debug only - display leftover memory allocation, if any */
+
+	acpi_ut_dump_allocations(ACPI_UINT32_MAX, NULL);
+
+	/* Free memory lists */
+
+	acpi_os_free(acpi_gbl_global_list);
+	acpi_gbl_global_list = NULL;
+
+	acpi_os_free(acpi_gbl_ns_node_list);
+	acpi_gbl_ns_node_list = NULL;
+#endif
+
 	return (AE_OK);
 }
 
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index 0bb4b59..67b9f32 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -319,11 +319,9 @@
 	new_count = count;
 
 	/*
-	 * Perform the reference count action
-	 * (increment, decrement, or force delete)
+	 * Perform the reference count action (increment, decrement, force delete)
 	 */
 	switch (action) {
-
 	case REF_INCREMENT:
 
 		new_count++;
@@ -360,7 +358,6 @@
 		if (new_count == 0) {
 			acpi_ut_delete_internal_obj(object);
 		}
-
 		break;
 
 	case REF_FORCE_DELETE:
@@ -385,13 +382,10 @@
 	 * (A deleted object will have a huge reference count)
 	 */
 	if (count > ACPI_MAX_REFERENCE_COUNT) {
-
 		ACPI_WARNING((AE_INFO,
-			      "Large Reference Count (%X) in object %p",
-			      count, object));
+			      "Large Reference Count (%X) in object %p", count,
+			      object));
 	}
-
-	return;
 }
 
 /*******************************************************************************
@@ -417,7 +411,7 @@
  ******************************************************************************/
 
 acpi_status
-acpi_ut_update_object_reference(union acpi_operand_object * object, u16 action)
+acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
 {
 	acpi_status status = AE_OK;
 	union acpi_generic_state *state_list = NULL;
@@ -521,11 +515,11 @@
 
 		case ACPI_TYPE_REGION:
 		default:
-			break;	/* No subobjects */
+			break;	/* No subobjects for all other types */
 		}
 
 		/*
-		 * Now we can update the count in the main object.  This can only
+		 * Now we can update the count in the main object. This can only
 		 * happen after we update the sub-objects in case this causes the
 		 * main object to be deleted.
 		 */
@@ -606,8 +600,8 @@
 	ACPI_FUNCTION_TRACE_PTR(ut_remove_reference, object);
 
 	/*
-	 * Allow a NULL pointer to be passed in, just ignore it.  This saves
-	 * each caller from having to check.  Also, ignore NS nodes.
+	 * Allow a NULL pointer to be passed in, just ignore it. This saves
+	 * each caller from having to check. Also, ignore NS nodes.
 	 *
 	 */
 	if (!object ||
@@ -627,7 +621,7 @@
 
 	/*
 	 * Decrement the reference count, and only actually delete the object
-	 * if the reference count becomes 0.  (Must also decrement the ref count
+	 * if the reference count becomes 0. (Must also decrement the ref count
 	 * of all subobjects!)
 	 */
 	(void)acpi_ut_update_object_reference(object, REF_DECREMENT);
diff --git a/drivers/acpi/utilities/uteval.c b/drivers/acpi/utilities/uteval.c
index 444d3a5..d6d7121 100644
--- a/drivers/acpi/utilities/uteval.c
+++ b/drivers/acpi/utilities/uteval.c
@@ -181,19 +181,26 @@
 			u32 expected_return_btypes,
 			union acpi_operand_object **return_desc)
 {
-	struct acpi_parameter_info info;
+	struct acpi_evaluate_info *info;
 	acpi_status status;
 	u32 return_btype;
 
 	ACPI_FUNCTION_TRACE(ut_evaluate_object);
 
-	info.node = prefix_node;
-	info.parameters = NULL;
-	info.parameter_type = ACPI_PARAM_ARGS;
+	/* Allocate the evaluation information block */
+
+	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+	if (!info) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	info->prefix_node = prefix_node;
+	info->pathname = path;
+	info->parameter_type = ACPI_PARAM_ARGS;
 
 	/* Evaluate the object/method */
 
-	status = acpi_ns_evaluate_relative(path, &info);
+	status = acpi_ns_evaluate(info);
 	if (ACPI_FAILURE(status)) {
 		if (status == AE_NOT_FOUND) {
 			ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
@@ -205,25 +212,25 @@
 					  prefix_node, path, status);
 		}
 
-		return_ACPI_STATUS(status);
+		goto cleanup;
 	}
 
 	/* Did we get a return object? */
 
-	if (!info.return_object) {
+	if (!info->return_object) {
 		if (expected_return_btypes) {
 			ACPI_ERROR_METHOD("No object was returned from",
 					  prefix_node, path, AE_NOT_EXIST);
 
-			return_ACPI_STATUS(AE_NOT_EXIST);
+			status = AE_NOT_EXIST;
 		}
 
-		return_ACPI_STATUS(AE_OK);
+		goto cleanup;
 	}
 
 	/* Map the return object type to the bitmapped type */
 
-	switch (ACPI_GET_OBJECT_TYPE(info.return_object)) {
+	switch (ACPI_GET_OBJECT_TYPE(info->return_object)) {
 	case ACPI_TYPE_INTEGER:
 		return_btype = ACPI_BTYPE_INTEGER;
 		break;
@@ -251,8 +258,8 @@
 		 * happen frequently if the "implicit return" feature is enabled.
 		 * Just delete the return object and return AE_OK.
 		 */
-		acpi_ut_remove_reference(info.return_object);
-		return_ACPI_STATUS(AE_OK);
+		acpi_ut_remove_reference(info->return_object);
+		goto cleanup;
 	}
 
 	/* Is the return object one of the expected types? */
@@ -264,19 +271,23 @@
 		ACPI_ERROR((AE_INFO,
 			    "Type returned from %s was incorrect: %s, expected Btypes: %X",
 			    path,
-			    acpi_ut_get_object_type_name(info.return_object),
+			    acpi_ut_get_object_type_name(info->return_object),
 			    expected_return_btypes));
 
 		/* On error exit, we must delete the return object */
 
-		acpi_ut_remove_reference(info.return_object);
-		return_ACPI_STATUS(AE_TYPE);
+		acpi_ut_remove_reference(info->return_object);
+		status = AE_TYPE;
+		goto cleanup;
 	}
 
 	/* Object type is OK, return it */
 
-	*return_desc = info.return_object;
-	return_ACPI_STATUS(AE_OK);
+	*return_desc = info->return_object;
+
+      cleanup:
+	ACPI_FREE(info);
+	return_ACPI_STATUS(status);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/utilities/utinit.c b/drivers/acpi/utilities/utinit.c
index c65747d..ff76055 100644
--- a/drivers/acpi/utilities/utinit.c
+++ b/drivers/acpi/utilities/utinit.c
@@ -228,6 +228,7 @@
 	/* Subsystem appears active, go ahead and shut it down */
 
 	acpi_gbl_shutdown = TRUE;
+	acpi_gbl_startup_flags = 0;
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
 
 	/* Close the acpi_event Handling */
@@ -245,12 +246,5 @@
 	/* Purge the local caches */
 
 	(void)acpi_ut_delete_caches();
-
-	/* Debug only - display leftover memory allocation, if any */
-
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-	acpi_ut_dump_allocations(ACPI_UINT32_MAX, NULL);
-#endif
-
 	return_VOID;
 }
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
index 8744671..5c75d35 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/utilities/utmisc.c
@@ -601,7 +601,8 @@
  * FUNCTION:    acpi_ut_strtoul64
  *
  * PARAMETERS:  String          - Null terminated string
- *              Base            - Radix of the string: 10, 16, or ACPI_ANY_BASE
+ *              Base            - Radix of the string: 16 or ACPI_ANY_BASE;
+ *                                ACPI_ANY_BASE means 'in behalf of to_integer'
  *              ret_integer     - Where the converted integer is returned
  *
  * RETURN:      Status and Converted value
@@ -617,16 +618,17 @@
 	u32 this_digit = 0;
 	acpi_integer return_value = 0;
 	acpi_integer quotient;
+	acpi_integer dividend;
+	u32 to_integer_op = (base == ACPI_ANY_BASE);
+	u32 mode32 = (acpi_gbl_integer_byte_width == 4);
+	u8 valid_digits = 0;
+	u8 sign_of0x = 0;
+	u8 term = 0;
 
 	ACPI_FUNCTION_TRACE(ut_stroul64);
 
-	if ((!string) || !(*string)) {
-		goto error_exit;
-	}
-
 	switch (base) {
 	case ACPI_ANY_BASE:
-	case 10:
 	case 16:
 		break;
 
@@ -635,39 +637,45 @@
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
+	if (!string) {
+		goto error_exit;
+	}
+
 	/* Skip over any white space in the buffer */
 
-	while (ACPI_IS_SPACE(*string) || *string == '\t') {
+	while ((*string) && (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 (to_integer_op) {
+		/*
+		 * Base equal to ACPI_ANY_BASE means 'to_integer operation case'.
+		 * We need to determine if it is decimal or hexadecimal.
+		 */
 		if ((*string == '0') && (ACPI_TOLOWER(*(string + 1)) == 'x')) {
+			sign_of0x = 1;
 			base = 16;
+
+			/* Skip over the leading '0x' */
 			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? Check that '0x' is not followed by white space. */
+
+	if (!(*string) || ACPI_IS_SPACE(*string) || *string == '\t') {
+		if (to_integer_op) {
+			goto error_exit;
+		} else {
+			goto all_done;
+		}
 	}
 
-	/* Any string left? */
+	dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
 
-	if (!(*string)) {
-		goto error_exit;
-	}
+	/* At least one character in the string here */
 
 	/* Main loop: convert the string to a 64-bit integer */
 
@@ -677,14 +685,12 @@
 			/* Convert ASCII 0-9 to Decimal value */
 
 			this_digit = ((u8) * string) - '0';
+		} else if (base == 10) {
+
+			/* Digit is out of range; possible in to_integer case only */
+
+			term = 1;
 		} 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)) {
 
@@ -692,22 +698,49 @@
 
 				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.
-				 */
+				term = 1;
+			}
+		}
+
+		if (term) {
+			if (to_integer_op) {
+				goto error_exit;
+			} else {
 				break;
 			}
+		} else if ((valid_digits == 0) && (this_digit == 0)
+			   && !sign_of0x) {
+
+			/* Skip zeros */
+			string++;
+			continue;
+		}
+
+		valid_digits++;
+
+		if (sign_of0x
+		    && ((valid_digits > 16)
+			|| ((valid_digits > 8) && mode32))) {
+			/*
+			 * This is to_integer operation case.
+			 * No any restrictions for string-to-integer conversion,
+			 * see ACPI spec.
+			 */
+			goto error_exit;
 		}
 
 		/* Divide the digit into the correct position */
 
 		(void)
-		    acpi_ut_short_divide((ACPI_INTEGER_MAX -
-					  (acpi_integer) this_digit), base,
-					 &quotient, NULL);
+		    acpi_ut_short_divide((dividend - (acpi_integer) this_digit),
+					 base, &quotient, NULL);
+
 		if (return_value > quotient) {
-			goto error_exit;
+			if (to_integer_op) {
+				goto error_exit;
+			} else {
+				break;
+			}
 		}
 
 		return_value *= base;
@@ -717,6 +750,8 @@
 
 	/* All done, normal exit */
 
+      all_done:
+
 	*ret_integer = return_value;
 	return_ACPI_STATUS(AE_OK);
 
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 0177ed3..8b52e44 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -63,7 +63,7 @@
 
 /* Current ACPICA subsystem version in YYYYMMDD format */
 
-#define ACPI_CA_VERSION                 0x20060512
+#define ACPI_CA_VERSION                 0x20060526
 
 /*
  * OS name, used for the _OS object.  The _OS object is essentially obsolete,
diff --git a/include/acpi/acdispat.h b/include/acpi/acdispat.h
index fcf03eb..288f849 100644
--- a/include/acpi/acdispat.h
+++ b/include/acpi/acdispat.h
@@ -304,7 +304,7 @@
 		      struct acpi_namespace_node *method_node,
 		      u8 * aml_start,
 		      u32 aml_length,
-		      struct acpi_parameter_info *info, u8 pass_number);
+		      struct acpi_evaluate_info *info, u8 pass_number);
 
 acpi_status
 acpi_ds_obj_stack_pop_and_delete(u32 pop_count,
diff --git a/include/acpi/acnamesp.h b/include/acpi/acnamesp.h
index 2ef8540..83b52f9 100644
--- a/include/acpi/acnamesp.h
+++ b/include/acpi/acnamesp.h
@@ -173,13 +173,7 @@
 /*
  * nseval - Namespace evaluation functions
  */
-acpi_status acpi_ns_evaluate_by_handle(struct acpi_parameter_info *info);
-
-acpi_status
-acpi_ns_evaluate_by_name(char *pathname, struct acpi_parameter_info *info);
-
-acpi_status
-acpi_ns_evaluate_relative(char *pathname, struct acpi_parameter_info *info);
+acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info);
 
 /*
  * nsnames - Name and Scope manipulation
@@ -202,9 +196,9 @@
 acpi_ns_pattern_match(struct acpi_namespace_node *obj_node, char *search_for);
 
 acpi_status
-acpi_ns_get_node_by_path(char *external_pathname,
-			 struct acpi_namespace_node *in_prefix_node,
-			 u32 flags, struct acpi_namespace_node **out_node);
+acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
+		 char *external_pathname,
+		 u32 flags, struct acpi_namespace_node **out_node);
 
 acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node);
 
@@ -247,10 +241,10 @@
 			 u32 flags, struct acpi_namespace_node **ret_node);
 
 acpi_status
-acpi_ns_search_node(u32 entry_name,
-		    struct acpi_namespace_node *node,
-		    acpi_object_type type,
-		    struct acpi_namespace_node **ret_node);
+acpi_ns_search_one_scope(u32 entry_name,
+			 struct acpi_namespace_node *node,
+			 acpi_object_type type,
+			 struct acpi_namespace_node **ret_node);
 
 void
 acpi_ns_install_node(struct acpi_walk_state *walk_state,
diff --git a/include/acpi/acopcode.h b/include/acpi/acopcode.h
index e6d78bd..7659a46 100644
--- a/include/acpi/acopcode.h
+++ b/include/acpi/acopcode.h
@@ -94,7 +94,7 @@
 #define ARGP_CONCAT_RES_OP              ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_TARGET)
 #define ARGP_COND_REF_OF_OP             ARGP_LIST2 (ARGP_SUPERNAME,  ARGP_SUPERNAME)
 #define ARGP_CONTINUE_OP                ARG_NONE
-#define ARGP_COPY_OP                    ARGP_LIST2 (ARGP_SUPERNAME,  ARGP_SIMPLENAME)
+#define ARGP_COPY_OP                    ARGP_LIST2 (ARGP_TERMARG,    ARGP_SIMPLENAME)
 #define ARGP_CREATE_BIT_FIELD_OP        ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_NAME)
 #define ARGP_CREATE_BYTE_FIELD_OP       ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_NAME)
 #define ARGP_CREATE_DWORD_FIELD_OP      ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_NAME)
diff --git a/include/acpi/acparser.h b/include/acpi/acparser.h
index de14492..9d49d3c 100644
--- a/include/acpi/acparser.h
+++ b/include/acpi/acparser.h
@@ -71,7 +71,7 @@
 /*
  * psxface - Parser external interfaces
  */
-acpi_status acpi_ps_execute_method(struct acpi_parameter_info *info);
+acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info);
 
 /*
  * psargs - Parse AML opcode arguments
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index 982e7ea..8f473c8 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -58,8 +58,7 @@
 	OSL_GPE_HANDLER,
 	OSL_DEBUGGER_THREAD,
 	OSL_EC_POLL_HANDLER,
-	OSL_EC_BURST_HANDLER,
-
+	OSL_EC_BURST_HANDLER
 } acpi_execute_type;
 
 #define ACPI_NO_UNIT_LIMIT          ((u32) -1)
@@ -217,7 +216,6 @@
 /*
  * Miscellaneous
  */
-
 acpi_status acpi_os_validate_interface(char *interface);
 
 acpi_status
@@ -265,11 +263,4 @@
 
 void acpi_os_close_directory(void *dir_handle);
 
-/*
- * Debug
- */
-void
-acpi_os_dbg_assert(void *failed_assertion,
-		   void *file_name, u32 line_number, char *message);
-
 #endif				/* __ACPIOSXF_H__ */
diff --git a/include/acpi/acresrc.h b/include/acpi/acresrc.h
index bdd6584..ad11fc1 100644
--- a/include/acpi/acresrc.h
+++ b/include/acpi/acresrc.h
@@ -164,23 +164,26 @@
 /*
  * rsutils
  */
-acpi_status
-acpi_rs_get_prt_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer);
 
 acpi_status
-acpi_rs_get_crs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer);
+acpi_rs_get_prt_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer);
 
-#ifdef	ACPI_FUTURE_USAGE
 acpi_status
-acpi_rs_get_prs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer);
-#endif				/* ACPI_FUTURE_USAGE */
+acpi_rs_get_crs_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer);
+
+acpi_status
+acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer);
 
 acpi_status
 acpi_rs_get_method_data(acpi_handle handle,
 			char *path, struct acpi_buffer *ret_buffer);
 
 acpi_status
-acpi_rs_set_srs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer);
+acpi_rs_set_srs_method_data(struct acpi_namespace_node *node,
+			    struct acpi_buffer *ret_buffer);
 
 /*
  * rscalc
diff --git a/include/acpi/acstruct.h b/include/acpi/acstruct.h
index b8a6d61..5e8095f 100644
--- a/include/acpi/acstruct.h
+++ b/include/acpi/acstruct.h
@@ -53,17 +53,25 @@
  ****************************************************************************/
 
 /*
- * Walk state - current state of a parse tree walk.  Used for both a leisurely stroll through
- * the tree (for whatever reason), and for control method execution.
+ * Walk state - current state of a parse tree walk.  Used for both a leisurely
+ * stroll through the tree (for whatever reason), and for control method
+ * execution.
  */
 #define ACPI_NEXT_OP_DOWNWARD       1
 #define ACPI_NEXT_OP_UPWARD         2
 
+/*
+ * Groups of definitions for walk_type used for different implementations of
+ * walkers (never simultaneously) - flags for interpreter:
+ */
 #define ACPI_WALK_NON_METHOD        0
-#define ACPI_WALK_METHOD            1
-#define ACPI_WALK_METHOD_RESTART    2
-#define ACPI_WALK_CONST_REQUIRED    3
-#define ACPI_WALK_CONST_OPTIONAL    4
+#define ACPI_WALK_METHOD            0x01
+#define ACPI_WALK_METHOD_RESTART    0x02
+
+/* Flags for i_aSL compiler only */
+
+#define ACPI_WALK_CONST_REQUIRED    0x10
+#define ACPI_WALK_CONST_OPTIONAL    0x20
 
 struct acpi_walk_state {
 	struct acpi_walk_state *next;	/* Next walk_state in list */
@@ -134,32 +142,6 @@
 	struct acpi_table_desc *table_desc;
 };
 
-/* Info used by acpi_ns_initialize_devices */
-
-struct acpi_device_walk_info {
-	u16 device_count;
-	u16 num_STA;
-	u16 num_INI;
-	struct acpi_table_desc *table_desc;
-};
-
-/* TBD: [Restructure] Merge with struct above */
-
-struct acpi_walk_info {
-	u32 debug_level;
-	u32 count;
-	acpi_owner_id owner_id;
-	u8 display_type;
-};
-
-/* Display Types */
-
-#define ACPI_DISPLAY_SUMMARY        (u8) 0
-#define ACPI_DISPLAY_OBJECTS        (u8) 1
-#define ACPI_DISPLAY_MASK           (u8) 1
-
-#define ACPI_DISPLAY_SHORT          (u8) 2
-
 struct acpi_get_devices_info {
 	acpi_walk_callback user_function;
 	void *context;
@@ -192,16 +174,21 @@
 	} mid;
 };
 
-/* Internal method parameter list */
-
-struct acpi_parameter_info {
-	struct acpi_namespace_node *node;
+/*
+ * Structure used to pass object evaluation parameters.
+ * Purpose is to reduce CPU stack use.
+ */
+struct acpi_evaluate_info {
+	struct acpi_namespace_node *prefix_node;
+	char *pathname;
 	union acpi_operand_object *obj_desc;
 	union acpi_operand_object **parameters;
+	struct acpi_namespace_node *resolved_node;
 	union acpi_operand_object *return_object;
 	u8 pass_number;
 	u8 parameter_type;
 	u8 return_object_type;
+	u8 flags;
 };
 
 /* Types for parameter_type above */
@@ -209,4 +196,35 @@
 #define ACPI_PARAM_ARGS                 0
 #define ACPI_PARAM_GPE                  1
 
+/* Values for Flags above */
+
+#define ACPI_IGNORE_RETURN_VALUE        1
+
+/* Info used by acpi_ns_initialize_devices */
+
+struct acpi_device_walk_info {
+	u16 device_count;
+	u16 num_STA;
+	u16 num_INI;
+	struct acpi_table_desc *table_desc;
+	struct acpi_evaluate_info *evaluate_info;
+};
+
+/* TBD: [Restructure] Merge with struct above */
+
+struct acpi_walk_info {
+	u32 debug_level;
+	u32 count;
+	acpi_owner_id owner_id;
+	u8 display_type;
+};
+
+/* Display Types */
+
+#define ACPI_DISPLAY_SUMMARY        (u8) 0
+#define ACPI_DISPLAY_OBJECTS        (u8) 1
+#define ACPI_DISPLAY_MASK           (u8) 1
+
+#define ACPI_DISPLAY_SHORT          (u8) 2
+
 #endif