diff -ur linux-2.4.21/drivers/acpi/utilities/utdelete.c linux-2.4.21.new/drivers/acpi/utilities/utdelete.c
--- linux-2.4.21/drivers/acpi/utilities/utdelete.c	2003-08-22 10:17:26.000000000 +0800
+++ linux-2.4.21.new/drivers/acpi/utilities/utdelete.c	2003-08-22 15:54:09.000000000 +0800
@@ -416,7 +416,7 @@
 	u32                             i;
 	union acpi_generic_state         *state_list = NULL;
 	union acpi_generic_state         *state;
-
+	union acpi_operand_object	*tmp;
 
 	ACPI_FUNCTION_TRACE_PTR ("ut_update_object_reference", object);
 
@@ -448,8 +448,15 @@
 		switch (ACPI_GET_OBJECT_TYPE (object)) {
 		case ACPI_TYPE_DEVICE:
 
-			acpi_ut_update_ref_count (object->device.system_notify, action);
-			acpi_ut_update_ref_count (object->device.device_notify, action);
+			tmp = object->device.system_notify;
+			if(tmp && tmp->common.reference_count<=1 && action == REF_DECREMENT)
+				object->device.system_notify = NULL;
+			acpi_ut_update_ref_count (tmp, action);
+
+			tmp = object->device.device_notify;
+			if(tmp && tmp->common.reference_count <=1 && action == REF_DECREMENT)
+				object->device.device_notify = NULL;
+			acpi_ut_update_ref_count (tmp, action);
 			break;
 
 
@@ -467,6 +474,9 @@
 				 */
 				status = acpi_ut_create_update_state_and_push (
 						 object->package.elements[i], action, &state_list);
+				tmp = object->package.elements[i];
+				if(tmp && tmp->common.reference_count<=1  && action == REF_DECREMENT) /*reference count didn't refresh now*/
+					object->package.elements[i] = NULL;
 				if (ACPI_FAILURE (status)) {
 					goto error_exit;
 				}
@@ -481,6 +491,9 @@
 			if (ACPI_FAILURE (status)) {
 				goto error_exit;
 			}
+			tmp = object->buffer_field.buffer_obj;
+			if( tmp && tmp->common.reference_count <=1  && action == REF_DECREMENT)/*reference count didn't refresh now*/
+				object->buffer_field.buffer_obj = NULL;
 			break;
 
 
@@ -491,6 +504,9 @@
 			if (ACPI_FAILURE (status)) {
 				goto error_exit;
 			}
+			tmp = object->field.region_obj;
+                        if( tmp && tmp->common.reference_count <=1  && action == REF_DECREMENT)/*reference count didn't refresh now*/
+                                object->field.region_obj = NULL;
 		   break;
 
 
@@ -501,12 +517,18 @@
 			if (ACPI_FAILURE (status)) {
 				goto error_exit;
 			}
+			tmp = object->bank_field.bank_obj;
+                        if( tmp && tmp->common.reference_count <=1  && action == REF_DECREMENT)/*reference count didn't refresh now*/
+                                object->bank_field.bank_obj = NULL;			
 
 			status = acpi_ut_create_update_state_and_push (
 					 object->bank_field.region_obj, action, &state_list);
 			if (ACPI_FAILURE (status)) {
 				goto error_exit;
 			}
+			tmp = object->bank_field.region_obj;
+                        if( tmp && tmp->common.reference_count <=1  && action == REF_DECREMENT)/*reference count didn't refresh now*/
+                                object->bank_field.region_obj = NULL;
 			break;
 
 
@@ -517,12 +539,18 @@
 			if (ACPI_FAILURE (status)) {
 				goto error_exit;
 			}
+			tmp = object->index_field.index_obj;
+                        if( tmp && tmp->common.reference_count <=1  && action == REF_DECREMENT)/*reference count didn't refresh now*/
+                                object->index_field.index_obj = NULL;
 
 			status = acpi_ut_create_update_state_and_push (
 					 object->index_field.data_obj, action, &state_list);
 			if (ACPI_FAILURE (status)) {
 				goto error_exit;
 			}
+			tmp = object->index_field.data_obj;
+                        if( tmp && tmp->common.reference_count <=1  && action == REF_DECREMENT)/*reference count didn't refresh now*/
+                                object->index_field.data_obj = NULL;
 			break;