42 files changed, 481 insertions, 834 deletions
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index c3f43daa8be3..36867cd70eac 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -78,7 +78,13 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node *node,
 u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
 acpi_status
-acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info);
+acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info);
+acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
+acpi_status acpi_raw_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
+acpi_status acpi_raw_disable_gpe(struct acpi_gpe_event_info *gpe_event_info);
 struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
                                                       u32 gpe_number);
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 92122292ef1f..1d192142c691 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -100,13 +100,6 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_all_methods_serialized, FALSE);
 u8 ACPI_INIT_GLOBAL(acpi_gbl_create_osi_method, TRUE);
 /*
- * Disable wakeup GPEs during runtime? Default is TRUE because WAKE and
- * RUNTIME GPEs should never be shared, and WAKE GPEs should typically only
- * be enabled just before going to sleep.
- */
-u8 ACPI_INIT_GLOBAL(acpi_gbl_leave_wake_gpes_disabled, TRUE);
-/*
 * Optionally use default values for the ACPI register widths. Set this to
 * TRUE to use the defaults, if an FADT contains incorrect widths/lengths.
 */
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index 32391588e163..120b3af56596 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -90,16 +90,13 @@ acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width);
 /*
 * hwgpe - GPE support
 */
-u32 acpi_hw_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info,
+u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info,
                             struct acpi_gpe_register_info *gpe_register_info);
 acpi_status
 acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action);
 acpi_status
-acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info *gpe_event_info);
-acpi_status
 acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                          struct acpi_gpe_block_info *gpe_block, void *context);
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 147a7e6bd38f..df85b53a674f 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -184,8 +184,9 @@ struct acpi_namespace_node {
        u8 flags;               /* Miscellaneous flags */
        acpi_owner_id owner_id; /* Node creator */
        union acpi_name_union name;     /* ACPI Name, always 4 chars per ACPI spec */
+        struct acpi_namespace_node *parent;     /* Parent node */
        struct acpi_namespace_node *child;      /* First child */
-        struct acpi_namespace_node *peer;       /* Peer. Parent if ANOBJ_END_OF_PEER_LIST set */
+        struct acpi_namespace_node *peer;       /* First peer */
        /*
         * The following fields are used by the ASL compiler and disassembler only
@@ -199,7 +200,7 @@ struct acpi_namespace_node {
 /* Namespace Node flags */
-#define ANOBJ_END_OF_PEER_LIST          0x01    /* End-of-list, Peer field points to parent */
+#define ANOBJ_RESERVED                  0x01    /* Available for use */
 #define ANOBJ_TEMPORARY                 0x02    /* Node is create by a method and is temporary */
 #define ANOBJ_METHOD_ARG                0x04    /* Node is a method argument */
 #define ANOBJ_METHOD_LOCAL              0x08    /* Node is a method local */
@@ -411,6 +412,7 @@ struct acpi_handler_info {
        acpi_event_handler address;     /* Address of handler, if any */
        void *context;          /* Context to be passed to handler */
        struct acpi_namespace_node *method_node;        /* Method node for this GPE level (saved) */
+        u8 orig_flags;          /* Original misc info about this GPE */
 };
 union acpi_gpe_dispatch_info {
@@ -428,7 +430,6 @@ struct acpi_gpe_event_info {
        u8 flags;               /* Misc info about this GPE */
        u8 gpe_number;          /* This GPE */
        u8 runtime_count;       /* References to a run GPE */
-        u8 wakeup_count;        /* References to a wake GPE */
 };
 /* Information about a GPE register pair, one per each status/enable pair in an array */
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index 258159cfcdfa..9f60ff002203 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -369,11 +369,4 @@ struct acpi_namespace_node *acpi_ns_validate_handle(acpi_handle handle);
 void acpi_ns_terminate(void);
-struct acpi_namespace_node *acpi_ns_get_parent_node(struct acpi_namespace_node
-                                                    *node);
-struct acpi_namespace_node *acpi_ns_get_next_valid_node(struct
-                                                        acpi_namespace_node
-                                                        *node);
 #endif                          /* __ACNAMESP_H__ */
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index cde18ea82656..54857fa87aaf 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -91,14 +91,14 @@
 /* Values for Flag byte above */
-#define AOPOBJ_AML_CONSTANT         0x01
+#define AOPOBJ_AML_CONSTANT         0x01        /* Integer is an AML constant */
-#define AOPOBJ_STATIC_POINTER       0x02
+#define AOPOBJ_STATIC_POINTER       0x02        /* Data is part of an ACPI table, don't delete */
-#define AOPOBJ_DATA_VALID           0x04
+#define AOPOBJ_DATA_VALID           0x04        /* Object is intialized and data is valid */
-#define AOPOBJ_OBJECT_INITIALIZED   0x08
+#define AOPOBJ_OBJECT_INITIALIZED   0x08        /* Region is initialized, _REG was run */
-#define AOPOBJ_SETUP_COMPLETE       0x10
+#define AOPOBJ_SETUP_COMPLETE       0x10        /* Region setup is complete */
-#define AOPOBJ_SINGLE_DATUM         0x20
+#define AOPOBJ_INVALID              0x20        /* Host OS won't allow a Region address */
-#define AOPOBJ_INVALID              0x40        /* Used if host OS won't allow an op_region address */
+#define AOPOBJ_MODULE_LEVEL         0x40        /* Method is actually module-level code */
-#define AOPOBJ_MODULE_LEVEL         0x80
+#define AOPOBJ_MODIFIED_NAMESPACE   0x80        /* Method modified the namespace */
 /******************************************************************************
 *
diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h
index 97116082cb6c..10998d369ad0 100644
--- a/drivers/acpi/acpica/acpredef.h
+++ b/drivers/acpi/acpica/acpredef.h
@@ -503,15 +503,16 @@ static const union acpi_predefined_info predefined_names[] =
        {{"_WAK", 1, ACPI_RTYPE_NONE | ACPI_RTYPE_INTEGER | ACPI_RTYPE_PACKAGE}},
                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2,0}, 0,0}}, /* Fixed-length (2 Int), but is optional */
-        {{{0,0,0,0}, 0,0}} /* Table terminator */
+        /* _WDG/_WED are MS extensions defined by "Windows Instrumentation" */
-};
-#if 0
+        {{"_WDG", 0, ACPI_RTYPE_BUFFER}},
-        /* Not implemented */
+        {{"_WED", 1,
+          ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER}},
-        {{"_WDG", 0, ACPI_RTYPE_BUFFER}},  /* MS Extension */
+        {{{0, 0, 0, 0}, 0, 0}}  /* Table terminator */
-        {{"_WED", 1, ACPI_RTYPE_PACKAGE}}, /* MS Extension */
+};
+#if 0
        /* This is an internally implemented control method, no need to check */
        {{"_OSI", 1, ACPI_RTYPE_INTEGER}},
diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h
index 161bc0e3d70a..6e5dd97949fe 100644
--- a/drivers/acpi/acpica/acstruct.h
+++ b/drivers/acpi/acpica/acstruct.h
@@ -127,22 +127,22 @@ struct acpi_walk_state {
        acpi_parse_upwards ascending_callback;
 };
-/* Info used by acpi_ps_init_objects */
+/* Info used by acpi_ns_initialize_objects and acpi_ds_initialize_objects */
 struct acpi_init_walk_info {
-        u16 method_count;
-        u16 device_count;
-        u16 op_region_count;
-        u16 field_count;
-        u16 buffer_count;
-        u16 package_count;
-        u16 op_region_init;
-        u16 field_init;
-        u16 buffer_init;
-        u16 package_init;
-        u16 object_count;
-        acpi_owner_id owner_id;
        u32 table_index;
+        u32 object_count;
+        u32 method_count;
+        u32 device_count;
+        u32 op_region_count;
+        u32 field_count;
+        u32 buffer_count;
+        u32 package_count;
+        u32 op_region_init;
+        u32 field_init;
+        u32 buffer_init;
+        u32 package_init;
+        acpi_owner_id owner_id;
 };
 struct acpi_get_devices_info {
@@ -201,11 +201,11 @@ struct acpi_evaluate_info {
 /* 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;
+        u32 device_count;
+        u32 num_STA;
+        u32 num_INI;
 };
 /* TBD: [Restructure] Merge with struct above */
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
index abe140318a74..cc4a38c57558 100644
--- a/drivers/acpi/acpica/dsinit.c
+++ b/drivers/acpi/acpica/dsinit.c
@@ -171,12 +171,12 @@ acpi_ds_initialize_objects(u32 table_index,
                          "**** Starting initialization of namespace objects ****\n"));
        ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "Parsing all Control Methods:"));
-        info.method_count = 0;
+        /* Set all init info to zero */
-        info.op_region_count = 0;
-        info.object_count = 0;
+        ACPI_MEMSET(&info, 0, sizeof(struct acpi_init_walk_info));
-        info.device_count = 0;
-        info.table_index = table_index;
        info.owner_id = owner_id;
+        info.table_index = table_index;
        /* Walk entire namespace from the supplied root */
@@ -204,13 +204,13 @@ acpi_ds_initialize_objects(u32 table_index,
        }
        ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
-                              "\nTable [%4.4s](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
+                              "\nTable [%4.4s](id %4.4X) - %u Objects with %u Devices %u Methods %u Regions\n",
                              table->signature, owner_id, info.object_count,
                              info.device_count, info.method_count,
                              info.op_region_count));
        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
-                          "%hd Methods, %hd Regions\n", info.method_count,
+                          "%u Methods, %u Regions\n", info.method_count,
                          info.op_region_count));
        return_ACPI_STATUS(AE_OK);
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 2a9a561c2f01..64750ee96e20 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -584,8 +584,22 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
                 * want make the objects permanent.
                 */
                if (!(method_desc->method.flags & AOPOBJ_MODULE_LEVEL)) {
-                        acpi_ns_delete_namespace_by_owner(method_desc->method.
-                                                          owner_id);
+                        /* Delete any direct children of (created by) this method */
+                        acpi_ns_delete_namespace_subtree(walk_state->
+                                                         method_node);
+                        /*
+                         * Delete any objects that were created by this method
+                         * elsewhere in the namespace (if any were created).
+                         */
+                        if (method_desc->method.
+                            flags & AOPOBJ_MODIFIED_NAMESPACE) {
+                                acpi_ns_delete_namespace_by_owner(method_desc->
+                                                                  method.
+                                                                  owner_id);
+                        }
                }
        }
@@ -605,7 +619,7 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
                 * we immediately reuse it for the next thread executing this method
                 */
                ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
-                                  "*** Completed execution of one thread, %d threads remaining\n",
+                                  "*** Completed execution of one thread, %u threads remaining\n",
                                  method_desc->method.thread_count));
        } else {
                /* This is the only executing thread for this method */
diff --git a/drivers/acpi/acpica/dsmthdat.c b/drivers/acpi/acpica/dsmthdat.c
index f3d52f59250b..8095306fcd8c 100644
--- a/drivers/acpi/acpica/dsmthdat.c
+++ b/drivers/acpi/acpica/dsmthdat.c
@@ -102,8 +102,7 @@ void acpi_ds_method_data_init(struct acpi_walk_state *walk_state)
                walk_state->arguments[i].name.integer |= (i << 24);
                walk_state->arguments[i].descriptor_type = ACPI_DESC_TYPE_NAMED;
                walk_state->arguments[i].type = ACPI_TYPE_ANY;
-                walk_state->arguments[i].flags =
+                walk_state->arguments[i].flags = ANOBJ_METHOD_ARG;
-                    ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_ARG;
        }
        /* Init the method locals */
@@ -116,8 +115,7 @@ void acpi_ds_method_data_init(struct acpi_walk_state *walk_state)
                walk_state->local_variables[i].descriptor_type =
                    ACPI_DESC_TYPE_NAMED;
                walk_state->local_variables[i].type = ACPI_TYPE_ANY;
-                walk_state->local_variables[i].flags =
+                walk_state->local_variables[i].flags = ANOBJ_METHOD_LOCAL;
-                    ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL;
        }
        return_VOID;
@@ -146,7 +144,7 @@ void acpi_ds_method_data_delete_all(struct acpi_walk_state *walk_state)
        for (index = 0; index < ACPI_METHOD_NUM_LOCALS; index++) {
                if (walk_state->local_variables[index].object) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Local%d=%p\n",
+                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Local%u=%p\n",
                                          index,
                                          walk_state->local_variables[index].
                                          object));
@@ -162,7 +160,7 @@ void acpi_ds_method_data_delete_all(struct acpi_walk_state *walk_state)
        for (index = 0; index < ACPI_METHOD_NUM_ARGS; index++) {
                if (walk_state->arguments[index].object) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Arg%d=%p\n",
+                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Arg%u=%p\n",
                                          index,
                                          walk_state->arguments[index].object));
@@ -226,7 +224,7 @@ acpi_ds_method_data_init_args(union acpi_operand_object **params,
                index++;
        }
-        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%d args passed to method\n", index));
+        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%u args passed to method\n", index));
        return_ACPI_STATUS(AE_OK);
 }
@@ -323,7 +321,7 @@ acpi_ds_method_data_set_value(u8 type,
        ACPI_FUNCTION_TRACE(ds_method_data_set_value);
        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                          "NewObj %p Type %2.2X, Refs=%d [%s]\n", object,
+                          "NewObj %p Type %2.2X, Refs=%u [%s]\n", object,
                          type, object->common.reference_count,
                          acpi_ut_get_type_name(object->common.type)));
@@ -543,7 +541,7 @@ acpi_ds_store_object_to_local(u8 type,
        union acpi_operand_object *new_obj_desc;
        ACPI_FUNCTION_TRACE(ds_store_object_to_local);
-        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Type=%2.2X Index=%d Obj=%p\n",
+        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Type=%2.2X Index=%u Obj=%p\n",
                          type, index, obj_desc));
        /* Parameter validation */
diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c
index 3607adcaf085..8e85f54a8e0e 100644
--- a/drivers/acpi/acpica/dsobject.c
+++ b/drivers/acpi/acpica/dsobject.c
@@ -81,6 +81,7 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
 {
        union acpi_operand_object *obj_desc;
        acpi_status status;
+        acpi_object_type type;
        ACPI_FUNCTION_TRACE(ds_build_internal_object);
@@ -172,7 +173,20 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
                                return_ACPI_STATUS(status);
                        }
-                        switch (op->common.node->type) {
+                        /*
+                         * Special handling for Alias objects. We need to setup the type
+                         * and the Op->Common.Node to point to the Alias target. Note,
+                         * Alias has at most one level of indirection internally.
+                         */
+                        type = op->common.node->type;
+                        if (type == ACPI_TYPE_LOCAL_ALIAS) {
+                                type = obj_desc->common.type;
+                                op->common.node =
+                                    ACPI_CAST_PTR(struct acpi_namespace_node,
+                                                  op->common.node->object);
+                        }
+                        switch (type) {
                                /*
                                 * For these types, we need the actual node, not the subobject.
                                 * However, the subobject did not get an extra reference count above.
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index 53a7e416f33e..7c0e74227171 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -213,7 +213,7 @@ acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc)
        /* Execute the AML code for the term_arg arguments */
-        status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
+        status = acpi_ds_execute_arguments(node, node->parent,
                                           extra_desc->extra.aml_length,
                                           extra_desc->extra.aml_start);
        return_ACPI_STATUS(status);
@@ -257,7 +257,7 @@ acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc)
        /* Execute the AML code for the term_arg arguments */
-        status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
+        status = acpi_ds_execute_arguments(node, node->parent,
                                           extra_desc->extra.aml_length,
                                           extra_desc->extra.aml_start);
        return_ACPI_STATUS(status);
@@ -394,7 +394,7 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
        /* Execute the argument AML */
-        status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
+        status = acpi_ds_execute_arguments(node, node->parent,
                                           extra_desc->extra.aml_length,
                                           extra_desc->extra.aml_start);
        if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/acpica/dsutils.c b/drivers/acpi/acpica/dsutils.c
index 306c62ab2e88..15135c25aa9b 100644
--- a/drivers/acpi/acpica/dsutils.c
+++ b/drivers/acpi/acpica/dsutils.c
@@ -746,7 +746,7 @@ acpi_ds_create_operands(struct acpi_walk_state *walk_state,
                index--;
                ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
-                                  "Arg #%d (%p) done, Arg1=%p\n", index, arg,
+                                  "Arg #%u (%p) done, Arg1=%p\n", index, arg,
                                  first_arg));
        }
@@ -760,7 +760,7 @@ acpi_ds_create_operands(struct acpi_walk_state *walk_state,
         */
        acpi_ds_obj_stack_pop_and_delete(arg_count, walk_state);
-        ACPI_EXCEPTION((AE_INFO, status, "While creating Arg %d", index));
+        ACPI_EXCEPTION((AE_INFO, status, "While creating Arg %u", index));
        return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index f5795915a2e9..303618889da0 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -102,9 +102,8 @@ acpi_status acpi_ev_initialize_events(void)
 * RETURN:      Status
 *
 * DESCRIPTION: Completes initialization of the FADT-defined GPE blocks
- *              (0 and 1). This causes the _PRW methods to be run, so the HW
+ *              (0 and 1). The HW must be fully initialized at this point,
- *              must be fully initialized at this point, including global lock
+ *              including global lock support.
- *              support.
 *
 ******************************************************************************/
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 7c2c336006a1..f226eac314db 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -54,51 +54,159 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context);
 /*******************************************************************************
 *
- * FUNCTION:    acpi_ev_update_gpe_enable_masks
+ * FUNCTION:    acpi_ev_update_gpe_enable_mask
 *
 * PARAMETERS:  gpe_event_info          - GPE to update
 *
 * RETURN:      Status
 *
- * DESCRIPTION: Updates GPE register enable masks based upon whether there are
+ * DESCRIPTION: Updates GPE register enable mask based upon whether there are
- *              references (either wake or run) to this GPE
+ *              runtime references to this GPE
 *
 ******************************************************************************/
 acpi_status
-acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
+acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info)
 {
        struct acpi_gpe_register_info *gpe_register_info;
        u32 register_bit;
-        ACPI_FUNCTION_TRACE(ev_update_gpe_enable_masks);
+        ACPI_FUNCTION_TRACE(ev_update_gpe_enable_mask);
        gpe_register_info = gpe_event_info->register_info;
        if (!gpe_register_info) {
                return_ACPI_STATUS(AE_NOT_EXIST);
        }
-        register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+        register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
                                                gpe_register_info);
-        /* Clear the wake/run bits up front */
+        /* Clear the run bit up front */
-        ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, register_bit);
        ACPI_CLEAR_BIT(gpe_register_info->enable_for_run, register_bit);
-        /* Set the mask bits only if there are references to this GPE */
+        /* Set the mask bit only if there are references to this GPE */
        if (gpe_event_info->runtime_count) {
-                ACPI_SET_BIT(gpe_register_info->enable_for_run, register_bit);
+                ACPI_SET_BIT(gpe_register_info->enable_for_run, (u8)register_bit);
        }
-        if (gpe_event_info->wakeup_count) {
+        return_ACPI_STATUS(AE_OK);
-                ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit);
+}
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_enable_gpe
+ *
+ * PARAMETERS:  gpe_event_info  - GPE to enable
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clear the given GPE from stale events and enable it.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+{
+        acpi_status status;
+        ACPI_FUNCTION_TRACE(ev_enable_gpe);
+        /*
+         * We will only allow a GPE to be enabled if it has either an
+         * associated method (_Lxx/_Exx) or a handler. Otherwise, the
+         * GPE will be immediately disabled by acpi_ev_gpe_dispatch the
+         * first time it fires.
+         */
+        if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)) {
+                return_ACPI_STATUS(AE_NO_HANDLER);
        }
-        return_ACPI_STATUS(AE_OK);
+        /* Clear the GPE (of stale events) */
+        status = acpi_hw_clear_gpe(gpe_event_info);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+        /* Enable the requested GPE */
+        status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);
+        return_ACPI_STATUS(status);
+}
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_raw_enable_gpe
+ *
+ * PARAMETERS:  gpe_event_info  - GPE to enable
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
+ *              hardware-enabled.
+ *
+ ******************************************************************************/
+acpi_status acpi_raw_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+{
+        acpi_status status = AE_OK;
+        if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
+                return_ACPI_STATUS(AE_LIMIT);
+        }
+        gpe_event_info->runtime_count++;
+        if (gpe_event_info->runtime_count == 1) {
+                status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
+                if (ACPI_SUCCESS(status)) {
+                        status = acpi_ev_enable_gpe(gpe_event_info);
+                }
+                if (ACPI_FAILURE(status)) {
+                        gpe_event_info->runtime_count--;
+                }
+        }
+        return_ACPI_STATUS(status);
 }
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_raw_disable_gpe
+ *
+ * PARAMETERS:  gpe_event_info  - GPE to disable
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Remove a reference to a GPE. When the last reference is
+ *              removed, the GPE is hardware-disabled.
+ *
+ ******************************************************************************/
+acpi_status acpi_raw_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+{
+        acpi_status status = AE_OK;
+        if (!gpe_event_info->runtime_count) {
+                return_ACPI_STATUS(AE_LIMIT);
+        }
+        gpe_event_info->runtime_count--;
+        if (!gpe_event_info->runtime_count) {
+                status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
+                if (ACPI_SUCCESS(status)) {
+                        status = acpi_hw_low_set_gpe(gpe_event_info,
+                                                     ACPI_GPE_DISABLE);
+                }
+                if (ACPI_FAILURE(status)) {
+                        gpe_event_info->runtime_count++;
+                }
+        }
+        return_ACPI_STATUS(status);
+}
 /*******************************************************************************
 *
@@ -417,8 +525,12 @@ static void acpi_ev_asynch_enable_gpe(void *context)
                }
        }
-        /* Enable this GPE */
+        /*
-        (void)acpi_hw_write_gpe_enable_reg(gpe_event_info);
+         * Enable this GPE, conditionally. This means that the GPE will only be
+         * physically enabled if the enable_for_run bit is set in the event_info
+         */
+        (void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_COND_ENABLE);
        return_VOID;
 }
diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index 341a38ce8aa6..85445fb5844e 100644
--- a/drivers/acpi/acpica/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -439,8 +439,6 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
 {
        acpi_status status;
        struct acpi_gpe_event_info *gpe_event_info;
-        struct acpi_gpe_walk_info walk_info;
-        u32 wake_gpe_count;
        u32 gpe_enabled_count;
        u32 gpe_index;
        u32 gpe_number;
@@ -456,37 +454,9 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
        }
        /*
-         * Runtime option: Should wake GPEs be enabled at runtime?  The default
+         * Enable all GPEs that have a corresponding method.  Any other GPEs
-         * is no, they should only be enabled just as the machine goes to sleep.
+         * within this block must be enabled via the acpi_enable_gpe interface.
         */
-        if (acpi_gbl_leave_wake_gpes_disabled) {
-                /*
-                 * Differentiate runtime vs wake GPEs, via the _PRW control methods.
-                 * Each GPE that has one or more _PRWs that reference it is by
-                 * definition a wake GPE and will not be enabled while the machine
-                 * is running.
-                 */
-                walk_info.gpe_block = gpe_block;
-                walk_info.gpe_device = gpe_device;
-                walk_info.execute_by_owner_id = FALSE;
-                status =
-                    acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                                           ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
-                                           acpi_ev_match_prw_and_gpe, NULL,
-                                           &walk_info, NULL);
-                if (ACPI_FAILURE(status)) {
-                        ACPI_EXCEPTION((AE_INFO, status,
-                                        "While executing _PRW methods"));
-                }
-        }
-        /*
-         * Enable all GPEs that have a corresponding method and are not
-         * capable of generating wakeups. Any other GPEs within this block
-         * must be enabled via the acpi_enable_gpe interface.
-         */
-        wake_gpe_count = 0;
        gpe_enabled_count = 0;
        if (gpe_device == acpi_gbl_fadt_gpe_device) {
@@ -502,35 +472,21 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
                        gpe_event_info = &gpe_block->event_info[gpe_index];
                        gpe_number = gpe_index + gpe_block->block_base_number;
-                        /*
-                         * If the GPE has already been enabled for runtime
-                         * signaling, make sure it remains enabled, but do not
-                         * increment its reference counter.
-                         */
-                        if (gpe_event_info->runtime_count) {
-                                acpi_set_gpe(gpe_device, gpe_number,
-                                                ACPI_GPE_ENABLE);
-                                gpe_enabled_count++;
-                                continue;
-                        }
-                        if (gpe_event_info->flags & ACPI_GPE_CAN_WAKE) {
-                                wake_gpe_count++;
-                                if (acpi_gbl_leave_wake_gpes_disabled) {
-                                        continue;
-                                }
-                        }
                        /* Ignore GPEs that have no corresponding _Lxx/_Exx method */
                        if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD)) {
                                continue;
                        }
-                        /* Enable this GPE */
+                        /*
+                         * If the GPE has already been enabled for runtime
+                         * signaling, make sure it remains enabled, but do not
+                         * increment its reference counter.
+                         */
+                        status = gpe_event_info->runtime_count ?
+                                acpi_ev_enable_gpe(gpe_event_info) :
+                                acpi_enable_gpe(gpe_device, gpe_number);
-                        status = acpi_enable_gpe(gpe_device, gpe_number,
-                                                 ACPI_GPE_TYPE_RUNTIME);
                        if (ACPI_FAILURE(status)) {
                                ACPI_EXCEPTION((AE_INFO, status,
                                                "Could not enable GPE 0x%02X",
@@ -542,10 +498,10 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
                }
        }
-        if (gpe_enabled_count || wake_gpe_count) {
+        if (gpe_enabled_count) {
                ACPI_DEBUG_PRINT((ACPI_DB_INIT,
-                                  "Enabled %u Runtime GPEs, added %u Wake GPEs in this block\n",
+                                  "Enabled %u GPEs in this block\n",
-                                  gpe_enabled_count, wake_gpe_count));
+                                  gpe_enabled_count));
        }
        return_ACPI_STATUS(AE_OK);
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index 3f6c2d26410d..3084c5de1bba 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -211,9 +211,7 @@ acpi_status acpi_ev_gpe_initialize(void)
 * DESCRIPTION: Check for new GPE methods (_Lxx/_Exx) made available as a
 *              result of a Load() or load_table() operation. If new GPE
 *              methods have been installed, register the new methods and
- *              enable and runtime GPEs that are associated with them. Also,
+ *              enable and runtime GPEs that are associated with them.
- *              run any newly loaded _PRW methods in order to discover any
- *              new CAN_WAKE GPEs.
 *
 ******************************************************************************/
@@ -223,49 +221,12 @@ void acpi_ev_update_gpes(acpi_owner_id table_owner_id)
        struct acpi_gpe_block_info *gpe_block;
        struct acpi_gpe_walk_info walk_info;
        acpi_status status = AE_OK;
-        u32 new_wake_gpe_count = 0;
-        /* We will examine only _PRW/_Lxx/_Exx methods owned by this table */
-        walk_info.owner_id = table_owner_id;
-        walk_info.execute_by_owner_id = TRUE;
-        walk_info.count = 0;
-        if (acpi_gbl_leave_wake_gpes_disabled) {
-                /*
-                 * 1) Run any newly-loaded _PRW methods to find any GPEs that
-                 * can now be marked as CAN_WAKE GPEs. Note: We must run the
-                 * _PRW methods before we process the _Lxx/_Exx methods because
-                 * we will enable all runtime GPEs associated with the new
-                 * _Lxx/_Exx methods at the time we process those methods.
-                 *
-                 * Unlock interpreter so that we can run the _PRW methods.
-                 */
-                walk_info.gpe_block = NULL;
-                walk_info.gpe_device = NULL;
-                acpi_ex_exit_interpreter();
-                status =
-                    acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                                           ACPI_UINT32_MAX,
-                                           ACPI_NS_WALK_NO_UNLOCK,
-                                           acpi_ev_match_prw_and_gpe, NULL,
-                                           &walk_info, NULL);
-                if (ACPI_FAILURE(status)) {
-                        ACPI_EXCEPTION((AE_INFO, status,
-                                        "While executing _PRW methods"));
-                }
-                acpi_ex_enter_interpreter();
-                new_wake_gpe_count = walk_info.count;
-        }
        /*
         * 2) Find any _Lxx/_Exx GPE methods that have just been loaded.
         *
-         * Any GPEs that correspond to new _Lxx/_Exx methods and are not
+         * Any GPEs that correspond to new _Lxx/_Exx methods are immediately
-         * marked as CAN_WAKE are immediately enabled.
+         * enabled.
         *
         * Examine the namespace underneath each gpe_device within the
         * gpe_block lists.
@@ -275,6 +236,8 @@ void acpi_ev_update_gpes(acpi_owner_id table_owner_id)
                return;
        }
+        walk_info.owner_id = table_owner_id;
+        walk_info.execute_by_owner_id = TRUE;
        walk_info.count = 0;
        walk_info.enable_this_gpe = TRUE;
@@ -307,10 +270,8 @@ void acpi_ev_update_gpes(acpi_owner_id table_owner_id)
                gpe_xrupt_info = gpe_xrupt_info->next;
        }
-        if (walk_info.count || new_wake_gpe_count) {
+        if (walk_info.count) {
-                ACPI_INFO((AE_INFO,
+                ACPI_INFO((AE_INFO, "Enabled %u new GPEs", walk_info.count));
-                           "Enabled %u new runtime GPEs, added %u new wakeup GPEs",
-                           walk_info.count, new_wake_gpe_count));
        }
        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
@@ -386,9 +347,6 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
        /*
         * 3) Edge/Level determination is based on the 2nd character
         *    of the method name
-         *
-         * NOTE: Default GPE type is RUNTIME only. Later, if a _PRW object is
-         * found that points to this GPE, the ACPI_GPE_CAN_WAKE flag is set.
         */
        switch (name[1]) {
        case 'L':
@@ -471,24 +429,18 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
         */
        if (walk_info->enable_this_gpe) {
-                /* Ignore GPEs that can wake the system */
+                walk_info->count++;
+                gpe_device = walk_info->gpe_device;
-                if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE) ||
+                if (gpe_device == acpi_gbl_fadt_gpe_device) {
-                    !acpi_gbl_leave_wake_gpes_disabled) {
+                        gpe_device = NULL;
-                        walk_info->count++;
+                }
-                        gpe_device = walk_info->gpe_device;
-                        if (gpe_device == acpi_gbl_fadt_gpe_device) {
-                                gpe_device = NULL;
-                        }
-                        status = acpi_enable_gpe(gpe_device, gpe_number,
+                status = acpi_enable_gpe(gpe_device, gpe_number);
-                                                 ACPI_GPE_TYPE_RUNTIME);
+                if (ACPI_FAILURE(status)) {
-                        if (ACPI_FAILURE(status)) {
+                        ACPI_EXCEPTION((AE_INFO, status,
-                                ACPI_EXCEPTION((AE_INFO, status,
+                                        "Could not enable GPE 0x%02X",
-                                                "Could not enable GPE 0x%02X",
+                                        gpe_number));
-                                                gpe_number));
-                        }
                }
        }
@@ -497,157 +449,3 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
                          name, gpe_number));
        return_ACPI_STATUS(AE_OK);
 }
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ev_match_prw_and_gpe
- *
- * PARAMETERS:  Callback from walk_namespace
- *
- * RETURN:      Status. NOTE: We ignore errors so that the _PRW walk is
- *              not aborted on a single _PRW failure.
- *
- * DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a
- *              Device. Run the _PRW method. If present, extract the GPE
- *              number and mark the GPE as a CAN_WAKE GPE. Allows a
- *              per-owner_id execution if execute_by_owner_id is TRUE in the
- *              walk_info parameter block.
- *
- * If walk_info->execute_by_owner_id is TRUE, we only execute _PRWs with that
- *    owner.
- * If walk_info->gpe_device is NULL, we execute every _PRW found. Otherwise,
- *    we only execute _PRWs that refer to the input gpe_device.
- *
- ******************************************************************************/
-acpi_status
-acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
-                          u32 level, void *context, void **return_value)
-{
-        struct acpi_gpe_walk_info *walk_info =
-            ACPI_CAST_PTR(struct acpi_gpe_walk_info, context);
-        struct acpi_namespace_node *gpe_device;
-        struct acpi_gpe_block_info *gpe_block;
-        struct acpi_namespace_node *target_gpe_device;
-        struct acpi_namespace_node *prw_node;
-        struct acpi_gpe_event_info *gpe_event_info;
-        union acpi_operand_object *pkg_desc;
-        union acpi_operand_object *obj_desc;
-        u32 gpe_number;
-        acpi_status status;
-        ACPI_FUNCTION_TRACE(ev_match_prw_and_gpe);
-        /* Check for a _PRW method under this device */
-        status = acpi_ns_get_node(obj_handle, METHOD_NAME__PRW,
-                                  ACPI_NS_NO_UPSEARCH, &prw_node);
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(AE_OK);
-        }
-        /* Check if requested owner_id matches this owner_id */
-        if ((walk_info->execute_by_owner_id) &&
-            (prw_node->owner_id != walk_info->owner_id)) {
-                return_ACPI_STATUS(AE_OK);
-        }
-        /* Execute the _PRW */
-        status = acpi_ut_evaluate_object(prw_node, NULL,
-                                         ACPI_BTYPE_PACKAGE, &pkg_desc);
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(AE_OK);
-        }
-        /* The returned _PRW package must have at least two elements */
-        if (pkg_desc->package.count < 2) {
-                goto cleanup;
-        }
-        /* Extract pointers from the input context */
-        gpe_device = walk_info->gpe_device;
-        gpe_block = walk_info->gpe_block;
-        /*
-         * The _PRW object must return a package, we are only interested
-         * in the first element
-         */
-        obj_desc = pkg_desc->package.elements[0];
-        if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
-                /* Use FADT-defined GPE device (from definition of _PRW) */
-                target_gpe_device = NULL;
-                if (gpe_device) {
-                        target_gpe_device = acpi_gbl_fadt_gpe_device;
-                }
-                /* Integer is the GPE number in the FADT described GPE blocks */
-                gpe_number = (u32)obj_desc->integer.value;
-        } else if (obj_desc->common.type == ACPI_TYPE_PACKAGE) {
-                /* Package contains a GPE reference and GPE number within a GPE block */
-                if ((obj_desc->package.count < 2) ||
-                    ((obj_desc->package.elements[0])->common.type !=
-                     ACPI_TYPE_LOCAL_REFERENCE) ||
-                    ((obj_desc->package.elements[1])->common.type !=
-                     ACPI_TYPE_INTEGER)) {
-                        goto cleanup;
-                }
-                /* Get GPE block reference and decode */
-                target_gpe_device =
-                    obj_desc->package.elements[0]->reference.node;
-                gpe_number = (u32)obj_desc->package.elements[1]->integer.value;
-        } else {
-                /* Unknown type, just ignore it */
-                goto cleanup;
-        }
-        /* Get the gpe_event_info for this GPE */
-        if (gpe_device) {
-                /*
-                 * Is this GPE within this block?
-                 *
-                 * TRUE if and only if these conditions are true:
-                 *     1) The GPE devices match.
-                 *     2) The GPE index(number) is within the range of the Gpe Block
-                 *          associated with the GPE device.
-                 */
-                if (gpe_device != target_gpe_device) {
-                        goto cleanup;
-                }
-                gpe_event_info =
-                    acpi_ev_low_get_gpe_info(gpe_number, gpe_block);
-        } else {
-                /* gpe_device is NULL, just match the target_device and gpe_number */
-                gpe_event_info =
-                    acpi_ev_get_gpe_event_info(target_gpe_device, gpe_number);
-        }
-        if (gpe_event_info) {
-                if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
-                        /* This GPE can wake the system */
-                        gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
-                        walk_info->count++;
-                }
-        }
-      cleanup:
-        acpi_ut_remove_reference(pkg_desc);
-        return_ACPI_STATUS(AE_OK);
-}
diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 2e3b0334072f..f40d271bf568 100644
--- a/drivers/acpi/acpica/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -199,7 +199,7 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
                return_ACPI_STATUS(status);
        }
-        parent_node = acpi_ns_get_parent_node(region_obj->region.node);
+        parent_node = region_obj->region.node->parent;
        /*
         * Get the _SEG and _BBN values from the device upon which the handler
@@ -248,7 +248,7 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
                                break;
                        }
-                        pci_root_node = acpi_ns_get_parent_node(pci_root_node);
+                        pci_root_node = pci_root_node->parent;
                }
                /* PCI root bridge not found, use namespace root node */
@@ -280,7 +280,7 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
         */
        pci_device_node = region_obj->region.node;
        while (pci_device_node && (pci_device_node->type != ACPI_TYPE_DEVICE)) {
-                pci_device_node = acpi_ns_get_parent_node(pci_device_node);
+                pci_device_node = pci_device_node->parent;
        }
        if (!pci_device_node) {
@@ -521,7 +521,7 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
                return_ACPI_STATUS(AE_NOT_EXIST);
        }
-        node = acpi_ns_get_parent_node(region_obj->region.node);
+        node = region_obj->region.node->parent;
        space_id = region_obj->region.space_id;
        /* Setup defaults */
@@ -654,7 +654,7 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
                /* This node does not have the handler we need; Pop up one level */
-                node = acpi_ns_get_parent_node(node);
+                node = node->parent;
        }
        /* If we get here, there is no handler for this region */
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 4a531cdf7942..14e48add32fa 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -691,12 +691,22 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
                return_ACPI_STATUS(status);
        }
+        /* Allocate memory for the handler object */
+        handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_handler_info));
+        if (!handler) {
+                status = AE_NO_MEMORY;
+                goto unlock_and_exit;
+        }
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
        /* Ensure that we have a valid GPE number */
        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
        if (!gpe_event_info) {
                status = AE_BAD_PARAMETER;
-                goto unlock_and_exit;
+                goto free_and_exit;
        }
        /* Make sure that there isn't a handler there already */
@@ -704,24 +714,30 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
        if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
            ACPI_GPE_DISPATCH_HANDLER) {
                status = AE_ALREADY_EXISTS;
-                goto unlock_and_exit;
+                goto free_and_exit;
        }
        /* Allocate and init handler object */
-        handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_handler_info));
-        if (!handler) {
-                status = AE_NO_MEMORY;
-                goto unlock_and_exit;
-        }
        handler->address = address;
        handler->context = context;
        handler->method_node = gpe_event_info->dispatch.method_node;
+        handler->orig_flags = gpe_event_info->flags &
+                        (ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
+        /*
+         * If the GPE is associated with a method and it cannot wake up the
+         * system from sleep states, it was enabled automatically during
+         * initialization, so it has to be disabled now to avoid spurious
+         * execution of the handler.
+         */
+        if ((handler->orig_flags & ACPI_GPE_DISPATCH_METHOD)
+            && !(gpe_event_info->flags & ACPI_GPE_CAN_WAKE))
+                (void)acpi_raw_disable_gpe(gpe_event_info);
        /* Install the handler */
-        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
        gpe_event_info->dispatch.handler = handler;
        /* Setup up dispatch flags to indicate handler (vs. method) */
@@ -735,6 +751,11 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
 unlock_and_exit:
        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
        return_ACPI_STATUS(status);
+free_and_exit:
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+        ACPI_FREE(handler);
+        goto unlock_and_exit;
 }
 ACPI_EXPORT_SYMBOL(acpi_install_gpe_handler)
@@ -770,11 +791,17 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
                return_ACPI_STATUS(AE_BAD_PARAMETER);
        }
+        /* Make sure all deferred tasks are completed */
+        acpi_os_wait_events_complete(NULL);
        status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
        }
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
        /* Ensure that we have a valid GPE number */
        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
@@ -798,34 +825,34 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
                goto unlock_and_exit;
        }
-        /* Make sure all deferred tasks are completed */
-        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
-        acpi_os_wait_events_complete(NULL);
-        status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(status);
-        }
        /* Remove the handler */
-        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
        handler = gpe_event_info->dispatch.handler;
        /* Restore Method node (if any), set dispatch flags */
        gpe_event_info->dispatch.method_node = handler->method_node;
-        gpe_event_info->flags &= ~ACPI_GPE_DISPATCH_MASK;       /* Clear bits */
+        gpe_event_info->flags &=
-        if (handler->method_node) {
+                ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
-                gpe_event_info->flags |= ACPI_GPE_DISPATCH_METHOD;
+        gpe_event_info->flags |= handler->orig_flags;
-        }
-        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+        /*
+         * If the GPE was previously associated with a method and it cannot wake
+         * up the system from sleep states, it should be enabled at this point
+         * to restore the post-initialization configuration.
+         */
+        if ((handler->orig_flags & ACPI_GPE_DISPATCH_METHOD)
+            && !(gpe_event_info->flags & ACPI_GPE_CAN_WAKE))
+                (void)acpi_raw_enable_gpe(gpe_event_info);
        /* Now we can free the handler object */
        ACPI_FREE(handler);
-      unlock_and_exit:
+unlock_and_exit:
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
        return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index 18b3f1468b7d..304825528d48 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -213,101 +213,71 @@ ACPI_EXPORT_SYMBOL(acpi_enable_event)
 /*******************************************************************************
 *
- * FUNCTION:    acpi_clear_and_enable_gpe
+ * FUNCTION:    acpi_gpe_wakeup
- *
- * PARAMETERS:  gpe_event_info  - GPE to enable
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Clear the given GPE from stale events and enable it.
- *
- ******************************************************************************/
-static acpi_status
-acpi_clear_and_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
-{
-        acpi_status status;
-        /*
-         * We will only allow a GPE to be enabled if it has either an
-         * associated method (_Lxx/_Exx) or a handler. Otherwise, the
-         * GPE will be immediately disabled by acpi_ev_gpe_dispatch the
-         * first time it fires.
-         */
-        if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK)) {
-                return_ACPI_STATUS(AE_NO_HANDLER);
-        }
-        /* Clear the GPE (of stale events) */
-        status = acpi_hw_clear_gpe(gpe_event_info);
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(status);
-        }
-        /* Enable the requested GPE */
-        status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);
-        return_ACPI_STATUS(status);
-}
-/*******************************************************************************
- *
- * FUNCTION:    acpi_set_gpe
 *
 * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
 *              gpe_number      - GPE level within the GPE block
- *              action          - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE
+ *              Action          - Enable or Disable
 *
 * RETURN:      Status
 *
- * DESCRIPTION: Enable or disable an individual GPE. This function bypasses
+ * DESCRIPTION: Set or clear the GPE's wakeup enable mask bit.
- *              the reference count mechanism used in the acpi_enable_gpe and
- *              acpi_disable_gpe interfaces -- and should be used with care.
- *
- * Note: Typically used to disable a runtime GPE for short period of time,
- * then re-enable it, without disturbing the existing reference counts. This
- * is useful, for example, in the Embedded Controller (EC) driver.
 *
 ******************************************************************************/
-acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action)
+acpi_status acpi_gpe_wakeup(acpi_handle gpe_device, u32 gpe_number, u8 action)
 {
+        acpi_status status = AE_OK;
        struct acpi_gpe_event_info *gpe_event_info;
-        acpi_status status;
+        struct acpi_gpe_register_info *gpe_register_info;
        acpi_cpu_flags flags;
+        u32 register_bit;
-        ACPI_FUNCTION_TRACE(acpi_set_gpe);
+        ACPI_FUNCTION_TRACE(acpi_gpe_wakeup);
        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
        /* Ensure that we have a valid GPE number */
        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
-        if (!gpe_event_info) {
+        if (!gpe_event_info || !(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
                status = AE_BAD_PARAMETER;
                goto unlock_and_exit;
        }
+        gpe_register_info = gpe_event_info->register_info;
+        if (!gpe_register_info) {
+                status = AE_NOT_EXIST;
+                goto unlock_and_exit;
+        }
+        register_bit =
+            acpi_hw_get_gpe_register_bit(gpe_event_info, gpe_register_info);
        /* Perform the action */
        switch (action) {
        case ACPI_GPE_ENABLE:
-                status = acpi_clear_and_enable_gpe(gpe_event_info);
+                ACPI_SET_BIT(gpe_register_info->enable_for_wake,
+                             (u8)register_bit);
                break;
        case ACPI_GPE_DISABLE:
-                status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
+                ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
+                               (u8)register_bit);
                break;
        default:
+                ACPI_ERROR((AE_INFO, "%u, Invalid action", action));
                status = AE_BAD_PARAMETER;
                break;
        }
-      unlock_and_exit:
+unlock_and_exit:
        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
        return_ACPI_STATUS(status);
 }
-ACPI_EXPORT_SYMBOL(acpi_set_gpe)
+ACPI_EXPORT_SYMBOL(acpi_gpe_wakeup)
 /*******************************************************************************
 *
@@ -315,84 +285,30 @@ ACPI_EXPORT_SYMBOL(acpi_set_gpe)
 *
 * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
 *              gpe_number      - GPE level within the GPE block
- *              gpe_type        - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE
- *                                or both
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
- *              hardware-enabled (for runtime GPEs), or the GPE register mask
+ *              hardware-enabled.
- *              is updated (for wake GPEs).
 *
 ******************************************************************************/
-acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
+acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
-        acpi_status status = AE_OK;
+        acpi_status status = AE_BAD_PARAMETER;
        struct acpi_gpe_event_info *gpe_event_info;
        acpi_cpu_flags flags;
        ACPI_FUNCTION_TRACE(acpi_enable_gpe);
-        /* Parameter validation */
-        if (!gpe_type || (gpe_type & ~ACPI_GPE_TYPE_WAKE_RUN)) {
-                return_ACPI_STATUS(AE_BAD_PARAMETER);
-        }
        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
        /* Ensure that we have a valid GPE number */
        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
-        if (!gpe_event_info) {
+        if (gpe_event_info) {
-                status = AE_BAD_PARAMETER;
+                status = acpi_raw_enable_gpe(gpe_event_info);
-                goto unlock_and_exit;
-        }
-        if (gpe_type & ACPI_GPE_TYPE_RUNTIME) {
-                if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
-                        status = AE_LIMIT;      /* Too many references */
-                        goto unlock_and_exit;
-                }
-                gpe_event_info->runtime_count++;
-                if (gpe_event_info->runtime_count == 1) {
-                        status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
-                        if (ACPI_SUCCESS(status)) {
-                                status = acpi_clear_and_enable_gpe(gpe_event_info);
-                        }
-                        if (ACPI_FAILURE(status)) {
-                                gpe_event_info->runtime_count--;
-                                goto unlock_and_exit;
-                        }
-                }
-        }
-        if (gpe_type & ACPI_GPE_TYPE_WAKE) {
-                /* The GPE must have the ability to wake the system */
-                if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
-                        status = AE_TYPE;
-                        goto unlock_and_exit;
-                }
-                if (gpe_event_info->wakeup_count == ACPI_UINT8_MAX) {
-                        status = AE_LIMIT;      /* Too many references */
-                        goto unlock_and_exit;
-                }
-                /*
-                 * Update the enable mask on the first wakeup reference. Wake GPEs
-                 * are only hardware-enabled just before sleeping.
-                 */
-                gpe_event_info->wakeup_count++;
-                if (gpe_event_info->wakeup_count == 1) {
-                        status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
-                }
        }
-unlock_and_exit:
        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
        return_ACPI_STATUS(status);
 }
@@ -404,8 +320,6 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
 *
 * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
 *              gpe_number      - GPE level within the GPE block
- *              gpe_type        - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE
- *                                or both
 *
 * RETURN:      Status
 *
@@ -414,20 +328,52 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
 *              the GPE mask bit disabled (for wake GPEs)
 *
 ******************************************************************************/
-acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
+acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
-        acpi_status status = AE_OK;
+        acpi_status status = AE_BAD_PARAMETER;
        struct acpi_gpe_event_info *gpe_event_info;
        acpi_cpu_flags flags;
        ACPI_FUNCTION_TRACE(acpi_disable_gpe);
-        /* Parameter validation */
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+        /* Ensure that we have a valid GPE number */
-        if (!gpe_type || (gpe_type & ~ACPI_GPE_TYPE_WAKE_RUN)) {
+        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
-                return_ACPI_STATUS(AE_BAD_PARAMETER);
+        if (gpe_event_info) {
+                status = acpi_raw_disable_gpe(gpe_event_info) ;
        }
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+        return_ACPI_STATUS(status);
+}
+ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_gpe_can_wake
+ *
+ * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
+ *              gpe_number      - GPE level within the GPE block
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Set the ACPI_GPE_CAN_WAKE flag for the given GPE.  If the GPE
+ *              has a corresponding method and is currently enabled, disable it
+ *              (GPEs with corresponding methods are enabled unconditionally
+ *              during initialization, but GPEs that can wake up are expected
+ *              to be initially disabled).
+ *
+ ******************************************************************************/
+acpi_status acpi_gpe_can_wake(acpi_handle gpe_device, u32 gpe_number)
+{
+        acpi_status status = AE_OK;
+        struct acpi_gpe_event_info *gpe_event_info;
+        acpi_cpu_flags flags;
+        ACPI_FUNCTION_TRACE(acpi_gpe_can_wake);
        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
        /* Ensure that we have a valid GPE number */
@@ -438,51 +384,20 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
                goto unlock_and_exit;
        }
-        /* Hardware-disable a runtime GPE on removal of the last reference */
+        if (gpe_event_info->flags & ACPI_GPE_CAN_WAKE) {
+                goto unlock_and_exit;
-        if (gpe_type & ACPI_GPE_TYPE_RUNTIME) {
-                if (!gpe_event_info->runtime_count) {
-                        status = AE_LIMIT;      /* There are no references to remove */
-                        goto unlock_and_exit;
-                }
-                gpe_event_info->runtime_count--;
-                if (!gpe_event_info->runtime_count) {
-                        status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
-                        if (ACPI_SUCCESS(status)) {
-                                status = acpi_hw_low_set_gpe(gpe_event_info,
-                                                             ACPI_GPE_DISABLE);
-                        }
-                        if (ACPI_FAILURE(status)) {
-                                gpe_event_info->runtime_count++;
-                                goto unlock_and_exit;
-                        }
-                }
        }
-        /*
+        gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
-         * Update masks for wake GPE on removal of the last reference.
+        if (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD) {
-         * No need to hardware-disable wake GPEs here, they are not currently
+                (void)acpi_raw_disable_gpe(gpe_event_info);
-         * enabled.
-         */
-        if (gpe_type & ACPI_GPE_TYPE_WAKE) {
-                if (!gpe_event_info->wakeup_count) {
-                        status = AE_LIMIT;      /* There are no references to remove */
-                        goto unlock_and_exit;
-                }
-                gpe_event_info->wakeup_count--;
-                if (!gpe_event_info->wakeup_count) {
-                        status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
-                }
        }
 unlock_and_exit:
        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
        return_ACPI_STATUS(status);
 }
-ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
+ACPI_EXPORT_SYMBOL(acpi_gpe_can_wake)
 /*******************************************************************************
 *
@@ -800,7 +715,7 @@ acpi_install_gpe_block(acpi_handle gpe_device,
        obj_desc->device.gpe_block = gpe_block;
-        /* Run the _PRW methods and enable the runtime GPEs in the new block */
+        /* Enable the runtime GPEs in the new block */
        status = acpi_ev_initialize_gpe_block(node, gpe_block);
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 008621c5ad85..18832205b631 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -120,7 +120,7 @@ acpi_ex_add_table(u32 table_index,
        acpi_ns_exec_module_code_list();
        acpi_ex_enter_interpreter();
-        /* Update GPEs for any new _PRW or _Lxx/_Exx methods. Ignore errors */
+        /* Update GPEs for any new _Lxx/_Exx methods. Ignore errors */
        status = acpi_tb_get_owner_id(table_index, &owner_id);
        if (ACPI_SUCCESS(status)) {
diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index d39d438ba1e3..f067bbb0d961 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -742,7 +742,7 @@ acpi_ex_dump_operands(union acpi_operand_object **operands,
        }
        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                          "**** Start operand dump for opcode [%s], %d operands\n",
+                          "**** Start operand dump for opcode [%s], %u operands\n",
                          opcode_name, num_operands));
        if (num_operands == 0) {
@@ -812,7 +812,7 @@ void acpi_ex_dump_namespace_node(struct acpi_namespace_node *node, u32 flags)
        acpi_ex_out_string("Type", acpi_ut_get_type_name(node->type));
        acpi_ex_out_pointer("Attached Object",
                            acpi_ns_get_attached_object(node));
-        acpi_ex_out_pointer("Parent", acpi_ns_get_parent_node(node));
+        acpi_ex_out_pointer("Parent", node->parent);
        acpi_ex_dump_object(ACPI_CAST_PTR(union acpi_operand_object, node),
                            acpi_ex_dump_node);
@@ -945,7 +945,7 @@ acpi_ex_dump_package_obj(union acpi_operand_object *obj_desc,
        case ACPI_TYPE_PACKAGE:
-                acpi_os_printf("[Package] Contains %d Elements:\n",
+                acpi_os_printf("[Package] Contains %u Elements:\n",
                               obj_desc->package.count);
                for (i = 0; i < obj_desc->package.count; i++) {
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index a6dc26f0b3be..047217303a4b 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -534,13 +534,13 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
        if (ACPI_SUCCESS(status)) {
                if (read_write == ACPI_READ) {
                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                          "Value Read %8.8X%8.8X, Width %d\n",
+                                          "Value Read %8.8X%8.8X, Width %u\n",
                                          ACPI_FORMAT_UINT64(*value),
                                          obj_desc->common_field.
                                          access_byte_width));
                } else {
                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                          "Value Written %8.8X%8.8X, Width %d\n",
+                                          "Value Written %8.8X%8.8X, Width %u\n",
                                          ACPI_FORMAT_UINT64(*value),
                                          obj_desc->common_field.
                                          access_byte_width));
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index 25059dace0ad..98a331d2249b 100644
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -108,11 +108,11 @@ acpi_ex_generate_access(u32 field_bit_offset,
        field_byte_length = field_byte_end_offset - field_byte_offset;
        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                          "Bit length %d, Bit offset %d\n",
+                          "Bit length %u, Bit offset %u\n",
                          field_bit_length, field_bit_offset));
        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                          "Byte Length %d, Byte Offset %d, End Offset %d\n",
+                          "Byte Length %u, Byte Offset %u, End Offset %u\n",
                          field_byte_length, field_byte_offset,
                          field_byte_end_offset));
@@ -147,11 +147,11 @@ acpi_ex_generate_access(u32 field_bit_offset,
                        accesses = field_end_offset - field_start_offset;
                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                          "AccessWidth %d end is within region\n",
+                                          "AccessWidth %u end is within region\n",
                                          access_byte_width));
                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                          "Field Start %d, Field End %d -- requires %d accesses\n",
+                                          "Field Start %u, Field End %u -- requires %u accesses\n",
                                          field_start_offset, field_end_offset,
                                          accesses));
@@ -159,7 +159,7 @@ acpi_ex_generate_access(u32 field_bit_offset,
                        if (accesses <= 1) {
                                ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                                  "Entire field can be accessed with one operation of size %d\n",
+                                                  "Entire field can be accessed with one operation of size %u\n",
                                                  access_byte_width));
                                return_VALUE(access_byte_width);
                        }
@@ -174,7 +174,7 @@ acpi_ex_generate_access(u32 field_bit_offset,
                        }
                } else {
                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                          "AccessWidth %d end is NOT within region\n",
+                                          "AccessWidth %u end is NOT within region\n",
                                          access_byte_width));
                        if (access_byte_width == 1) {
                                ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
@@ -190,7 +190,7 @@ acpi_ex_generate_access(u32 field_bit_offset,
                         * previous access
                         */
                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                          "Backing off to previous optimal access width of %d\n",
+                                          "Backing off to previous optimal access width of %u\n",
                                          minimum_access_width));
                        return_VALUE(minimum_access_width);
                }
@@ -385,15 +385,6 @@ acpi_ex_prep_common_field_object(union acpi_operand_object *obj_desc,
            (field_bit_position -
             ACPI_MUL_8(obj_desc->common_field.base_byte_offset));
-        /*
-         * Does the entire field fit within a single field access element? (datum)
-         * (i.e., without crossing a datum boundary)
-         */
-        if ((obj_desc->common_field.start_field_bit_offset +
-             field_bit_length) <= (u16) access_bit_width) {
-                obj_desc->common.flags |= AOPOBJ_SINGLE_DATUM;
-        }
        return_ACPI_STATUS(AE_OK);
 }
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index 531000fc77d2..8819d2ac5aee 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -194,7 +194,7 @@ acpi_ex_system_memory_space_handler(u32 function,
            ((u64) address - (u64) mem_info->mapped_physical_address);
        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                          "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n",
+                          "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
                          bit_width, function,
                          ACPI_FORMAT_NATIVE_UINT(address)));
@@ -297,7 +297,7 @@ acpi_ex_system_io_space_handler(u32 function,
        ACPI_FUNCTION_TRACE(ex_system_io_space_handler);
        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                          "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n",
+                          "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n",
                          bit_width, function,
                          ACPI_FORMAT_NATIVE_UINT(address)));
@@ -373,7 +373,7 @@ acpi_ex_pci_config_space_handler(u32 function,
        pci_register = (u16) (u32) address;
        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                          "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
+                          "Pci-Config %u (%u) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
                          function, bit_width, pci_id->segment, pci_id->bus,
                          pci_id->device, pci_id->function, pci_register));
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index 3450309c2786..14750db2a1b8 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -57,7 +57,7 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 /******************************************************************************
 *
- * FUNCTION:    acpi_hw_gpe_register_bit
+ * FUNCTION:    acpi_hw_get_gpe_register_bit
 *
 * PARAMETERS:  gpe_event_info      - Info block for the GPE
 *              gpe_register_info   - Info block for the GPE register
@@ -69,7 +69,7 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 *
 ******************************************************************************/
-u32 acpi_hw_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info,
+u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info,
                             struct acpi_gpe_register_info *gpe_register_info)
 {
        return (u32)1 << (gpe_event_info->gpe_number -
@@ -115,7 +115,7 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action)
        /* Set ot clear just the bit that corresponds to this GPE */
-        register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+        register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
                                                gpe_register_info);
        switch (action) {
        case ACPI_GPE_COND_ENABLE:
@@ -143,31 +143,6 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action)
 /******************************************************************************
 *
- * FUNCTION:    acpi_hw_write_gpe_enable_reg
- *
- * PARAMETERS:  gpe_event_info      - Info block for the GPE to be enabled
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Write a GPE enable register.  Note: The bit for this GPE must
- *              already be cleared or set in the parent register
- *              enable_for_run mask.
- *
- ******************************************************************************/
-acpi_status
-acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info * gpe_event_info)
-{
-        acpi_status status;
-        ACPI_FUNCTION_ENTRY();
-        status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_COND_ENABLE);
-        return (status);
-}
-/******************************************************************************
- *
 * FUNCTION:    acpi_hw_clear_gpe
 *
 * PARAMETERS:  gpe_event_info      - Info block for the GPE to be cleared
@@ -193,7 +168,7 @@ acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
                return (AE_NOT_EXIST);
        }
-        register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+        register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
                                                gpe_register_info);
        /*
@@ -241,7 +216,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
        /* Get the register bitmask for this GPE */
-        register_bit = acpi_hw_gpe_register_bit(gpe_event_info,
+        register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
                                                gpe_register_info);
        /* GPE currently enabled? (enabled for runtime?) */
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index 36eb803dd9d0..3796811276ac 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -307,7 +307,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
                return_ACPI_STATUS(status);
        }
        ACPI_DEBUG_PRINT((ACPI_DB_INIT,
-                          "Entering sleep state [S%d]\n", sleep_state));
+                          "Entering sleep state [S%u]\n", sleep_state));
        /* Clear the SLP_EN and SLP_TYP fields */
diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index 3a2814676ac3..0cd925be5fc1 100644
--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -338,8 +338,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                         */
                        while (!acpi_ns_opens_scope(prefix_node->type) &&
                               prefix_node->type != ACPI_TYPE_ANY) {
-                                prefix_node =
+                                prefix_node = prefix_node->parent;
-                                    acpi_ns_get_parent_node(prefix_node);
                        }
                }
        }
@@ -419,7 +418,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                                /* Backup to the parent node */
                                num_carats++;
-                                this_node = acpi_ns_get_parent_node(this_node);
+                                this_node = this_node->parent;
                                if (!this_node) {
                                        /* Current scope has no parent scope */
@@ -433,7 +432,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                        if (search_parent_flag == ACPI_NS_NO_UPSEARCH) {
                                ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
-                                                  "Search scope is [%4.4s], path has %d carat(s)\n",
+                                                  "Search scope is [%4.4s], path has %u carat(s)\n",
                                                  acpi_ut_get_node_name
                                                  (this_node), num_carats));
                        }
@@ -495,7 +494,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                        path++;
                        ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
-                                          "Multi Pathname (%d Segments, Flags=%X)\n",
+                                          "Multi Pathname (%u Segments, Flags=%X)\n",
                                          num_segments, flags));
                        break;
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index 982269c1fa48..1e5ff803d9ad 100644
--- a/drivers/acpi/acpica/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -159,7 +159,7 @@ void acpi_ns_remove_node(struct acpi_namespace_node *node)
        ACPI_FUNCTION_TRACE_PTR(ns_remove_node, node);
-        parent_node = acpi_ns_get_parent_node(node);
+        parent_node = node->parent;
        prev_node = NULL;
        next_node = parent_node->child;
@@ -168,29 +168,20 @@ void acpi_ns_remove_node(struct acpi_namespace_node *node)
        while (next_node != node) {
                prev_node = next_node;
-                next_node = prev_node->peer;
+                next_node = next_node->peer;
        }
        if (prev_node) {
                /* Node is not first child, unlink it */
-                prev_node->peer = next_node->peer;
+                prev_node->peer = node->peer;
-                if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
-                        prev_node->flags |= ANOBJ_END_OF_PEER_LIST;
-                }
        } else {
-                /* Node is first child (has no previous peer) */
+                /*
+                 * Node is first child (has no previous peer).
-                if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
+                 * Link peer list to parent
+                 */
-                        /* No peers at all */
+                parent_node->child = node->peer;
-                        parent_node->child = NULL;
-                } else {        /* Link peer list to parent */
-                        parent_node->child = next_node->peer;
-                }
        }
        /* Delete the node and any attached objects */
@@ -228,33 +219,42 @@ void acpi_ns_install_node(struct acpi_walk_state *walk_state, struct acpi_namesp
        ACPI_FUNCTION_TRACE(ns_install_node);
-        /*
-         * Get the owner ID from the Walk state. The owner ID is used to track
-         * table deletion and deletion of objects created by methods.
-         */
        if (walk_state) {
+                /*
+                 * Get the owner ID from the Walk state. The owner ID is used to
+                 * track table deletion and deletion of objects created by methods.
+                 */
                owner_id = walk_state->owner_id;
+                if ((walk_state->method_desc) &&
+                    (parent_node != walk_state->method_node)) {
+                        /*
+                         * A method is creating a new node that is not a child of the
+                         * method (it is non-local). Mark the executing method as having
+                         * modified the namespace. This is used for cleanup when the
+                         * method exits.
+                         */
+                        walk_state->method_desc->method.flags |=
+                            AOPOBJ_MODIFIED_NAMESPACE;
+                }
        }
        /* Link the new entry into the parent and existing children */
+        node->peer = NULL;
+        node->parent = parent_node;
        child_node = parent_node->child;
        if (!child_node) {
                parent_node->child = node;
-                node->flags |= ANOBJ_END_OF_PEER_LIST;
-                node->peer = parent_node;
        } else {
-                while (!(child_node->flags & ANOBJ_END_OF_PEER_LIST)) {
+                /* Add node to the end of the peer list */
+                while (child_node->peer) {
                        child_node = child_node->peer;
                }
                child_node->peer = node;
-                /* Clear end-of-list flag */
-                child_node->flags &= ~ANOBJ_END_OF_PEER_LIST;
-                node->flags |= ANOBJ_END_OF_PEER_LIST;
-                node->peer = parent_node;
        }
        /* Init the new entry */
@@ -288,9 +288,8 @@ void acpi_ns_install_node(struct acpi_walk_state *walk_state, struct acpi_namesp
 void acpi_ns_delete_children(struct acpi_namespace_node *parent_node)
 {
-        struct acpi_namespace_node *child_node;
        struct acpi_namespace_node *next_node;
-        u8 flags;
+        struct acpi_namespace_node *node_to_delete;
        ACPI_FUNCTION_TRACE_PTR(ns_delete_children, parent_node);
@@ -298,37 +297,26 @@ void acpi_ns_delete_children(struct acpi_namespace_node *parent_node)
                return_VOID;
        }
-        /* If no children, all done! */
-        child_node = parent_node->child;
-        if (!child_node) {
-                return_VOID;
-        }
        /* Deallocate all children at this level */
-        do {
+        next_node = parent_node->child;
+        while (next_node) {
-                /* Get the things we need */
-                next_node = child_node->peer;
-                flags = child_node->flags;
                /* Grandchildren should have all been deleted already */
-                if (child_node->child) {
+                if (next_node->child) {
                        ACPI_ERROR((AE_INFO, "Found a grandchild! P=%p C=%p",
-                                    parent_node, child_node));
+                                    parent_node, next_node));
                }
                /*
                 * Delete this child node and move on to the next child in the list.
                 * No need to unlink the node since we are deleting the entire branch.
                 */
-                acpi_ns_delete_node(child_node);
+                node_to_delete = next_node;
-                child_node = next_node;
+                next_node = next_node->peer;
+                acpi_ns_delete_node(node_to_delete);
-        } while (!(flags & ANOBJ_END_OF_PEER_LIST));
+        };
        /* Clear the parent's child pointer */
@@ -405,7 +393,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
                        /* Move up the tree to the grandparent */
-                        parent_node = acpi_ns_get_parent_node(parent_node);
+                        parent_node = parent_node->parent;
                }
        }
@@ -510,7 +498,7 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
                        /* Move up the tree to the grandparent */
-                        parent_node = acpi_ns_get_parent_node(parent_node);
+                        parent_node = parent_node->parent;
                }
        }
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 2110cc2360f0..a54dc39e304b 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -441,7 +441,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
                        return (AE_OK);
                }
-                acpi_os_printf("(R%d)", obj_desc->common.reference_count);
+                acpi_os_printf("(R%u)", obj_desc->common.reference_count);
                switch (type) {
                case ACPI_TYPE_METHOD:
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c
index 4e5272c313e0..660a2728908d 100644
--- a/drivers/acpi/acpica/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -103,8 +103,8 @@ acpi_status acpi_ns_initialize_objects(void)
        }
        ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
-                              "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd "
+                              "\nInitialized %u/%u Regions %u/%u Fields %u/%u "
-                              "Buffers %hd/%hd Packages (%hd nodes)\n",
+                              "Buffers %u/%u Packages (%u nodes)\n",
                              info.op_region_init, info.op_region_count,
                              info.field_init, info.field_count,
                              info.buffer_init, info.buffer_count,
@@ -112,9 +112,9 @@ acpi_status acpi_ns_initialize_objects(void)
                              info.object_count));
        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
-                          "%hd Control Methods found\n", info.method_count));
+                          "%u Control Methods found\n", info.method_count));
        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
-                          "%hd Op Regions found\n", info.op_region_count));
+                          "%u Op Regions found\n", info.op_region_count));
        return_ACPI_STATUS(AE_OK);
 }
@@ -208,8 +208,8 @@ acpi_status acpi_ns_initialize_devices(void)
        }
        ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
-                              "\nExecuted %hd _INI methods requiring %hd _STA executions "
+                              "\nExecuted %u _INI methods requiring %u _STA executions "
-                              "(examined %hd objects)\n",
+                              "(examined %u objects)\n",
                              info.num_INI, info.num_STA, info.device_count));
        return_ACPI_STATUS(status);
@@ -410,7 +410,7 @@ acpi_ns_find_ini_methods(acpi_handle obj_handle,
         * The only _INI methods that we care about are those that are
         * present under Device, Processor, and Thermal objects.
         */
-        parent_node = acpi_ns_get_parent_node(node);
+        parent_node = node->parent;
        switch (parent_node->type) {
        case ACPI_TYPE_DEVICE:
        case ACPI_TYPE_PROCESSOR:
@@ -420,7 +420,7 @@ acpi_ns_find_ini_methods(acpi_handle obj_handle,
                while (parent_node) {
                        parent_node->flags |= ANOBJ_SUBTREE_HAS_INI;
-                        parent_node = acpi_ns_get_parent_node(parent_node);
+                        parent_node = parent_node->parent;
                }
                break;
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index 7dea0031605c..d3104af57e13 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -93,7 +93,7 @@ acpi_ns_build_external_path(struct acpi_namespace_node *node,
                /* Put the name into the buffer */
                ACPI_MOVE_32_TO_32((name_buffer + index), &parent_node->name);
-                parent_node = acpi_ns_get_parent_node(parent_node);
+                parent_node = parent_node->parent;
                /* Prefix name with the path separator */
@@ -198,7 +198,7 @@ acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node)
                        return 0;
                }
                size += ACPI_PATH_SEGMENT_LENGTH;
-                next_node = acpi_ns_get_parent_node(next_node);
+                next_node = next_node->parent;
        }
        if (!size) {
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c
index 27cda52c76bc..5808c89e9fac 100644
--- a/drivers/acpi/acpica/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -136,8 +136,8 @@ acpi_ns_one_complete_parse(u32 pass_number,
        /* Parse the AML */
-        ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %d parse\n",
+        ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %u parse\n",
-                          (unsigned)pass_number));
+                          pass_number));
        status = acpi_ps_parse_aml(walk_state);
      cleanup:
diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c
index d4be37751be4..d1c136692667 100644
--- a/drivers/acpi/acpica/nsrepair.c
+++ b/drivers/acpi/acpica/nsrepair.c
@@ -556,7 +556,7 @@ acpi_ns_repair_null_element(struct acpi_predefined_data *data,
                /* Need an Integer - create a zero-value integer */
-                new_object = acpi_ut_create_integer_object(0);
+                new_object = acpi_ut_create_integer_object((u64)0);
        } else if (expected_btypes & ACPI_RTYPE_STRING) {
                /* Need a String - create a NULL string */
diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index 61bd0f6755d2..4009498fbabd 100644
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -112,6 +112,13 @@ acpi_ns_sort_list(union acpi_operand_object **elements,
 * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
 * _PSS: Sort the list descending by Power
 * _TSS: Sort the list descending by Power
+ *
+ * Names that must be packages, but cannot be sorted:
+ *
+ * _BCL: Values are tied to the Package index where they appear, and cannot
+ * be moved or sorted. These index values are used for _BQC and _BCM.
+ * However, we can fix the case where a buffer is returned, by converting
+ * it to a Package of integers.
 */
 static const struct acpi_repair_info acpi_ns_repairable_names[] = {
        {"_ALR", acpi_ns_repair_ALR},
diff --git a/drivers/acpi/acpica/nssearch.c b/drivers/acpi/acpica/nssearch.c
index a8e42b5e9463..41102a84272f 100644
--- a/drivers/acpi/acpica/nssearch.c
+++ b/drivers/acpi/acpica/nssearch.c
@@ -152,17 +152,6 @@ acpi_ns_search_one_scope(u32 target_name,
                        return_ACPI_STATUS(AE_OK);
                }
-                /*
-                 * The last entry in the list points back to the parent,
-                 * so a flag is used to indicate the end-of-list
-                 */
-                if (node->flags & ANOBJ_END_OF_PEER_LIST) {
-                        /* Searched entire list, we are done */
-                        break;
-                }
                /* Didn't match name, move on to the next peer object */
                node = node->peer;
@@ -217,7 +206,7 @@ acpi_ns_search_parent_tree(u32 target_name,
        ACPI_FUNCTION_TRACE(ns_search_parent_tree);
-        parent_node = acpi_ns_get_parent_node(node);
+        parent_node = node->parent;
        /*
         * If there is no parent (i.e., we are at the root) or type is "local",
@@ -261,7 +250,7 @@ acpi_ns_search_parent_tree(u32 target_name,
                /* Not found here, go up another level (until we reach the root) */
-                parent_node = acpi_ns_get_parent_node(parent_node);
+                parent_node = parent_node->parent;
        }
        /* Not found in parent tree */
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index bab559712da1..e1add3491b04 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -847,116 +847,3 @@ acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
        ACPI_FREE(internal_path);
        return_ACPI_STATUS(status);
 }
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_get_parent_node
- *
- * PARAMETERS:  Node       - Current table entry
- *
- * RETURN:      Parent entry of the given entry
- *
- * DESCRIPTION: Obtain the parent entry for a given entry in the namespace.
- *
- ******************************************************************************/
-struct acpi_namespace_node *acpi_ns_get_parent_node(struct acpi_namespace_node
-                                                    *node)
-{
-        ACPI_FUNCTION_ENTRY();
-        if (!node) {
-                return (NULL);
-        }
-        /*
-         * Walk to the end of this peer list. The last entry is marked with a flag
-         * and the peer pointer is really a pointer back to the parent. This saves
-         * putting a parent back pointer in each and every named object!
-         */
-        while (!(node->flags & ANOBJ_END_OF_PEER_LIST)) {
-                node = node->peer;
-        }
-        return (node->peer);
-}
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_get_next_valid_node
- *
- * PARAMETERS:  Node       - Current table entry
- *
- * RETURN:      Next valid Node in the linked node list. NULL if no more valid
- *              nodes.
- *
- * DESCRIPTION: Find the next valid node within a name table.
- *              Useful for implementing NULL-end-of-list loops.
- *
- ******************************************************************************/
-struct acpi_namespace_node *acpi_ns_get_next_valid_node(struct
-                                                        acpi_namespace_node
-                                                        *node)
-{
-        /* If we are at the end of this peer list, return NULL */
-        if (node->flags & ANOBJ_END_OF_PEER_LIST) {
-                return NULL;
-        }
-        /* Otherwise just return the next peer */
-        return (node->peer);
-}
-#ifdef ACPI_OBSOLETE_FUNCTIONS
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_find_parent_name
- *
- * PARAMETERS:  *child_node            - Named Obj whose name is to be found
- *
- * RETURN:      The ACPI name
- *
- * DESCRIPTION: Search for the given obj in its parent scope and return the
- *              name segment, or "????" if the parent name can't be found
- *              (which "should not happen").
- *
- ******************************************************************************/
-acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node * child_node)
-{
-        struct acpi_namespace_node *parent_node;
-        ACPI_FUNCTION_TRACE(ns_find_parent_name);
-        if (child_node) {
-                /* Valid entry.  Get the parent Node */
-                parent_node = acpi_ns_get_parent_node(child_node);
-                if (parent_node) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                          "Parent of %p [%4.4s] is %p [%4.4s]\n",
-                                          child_node,
-                                          acpi_ut_get_node_name(child_node),
-                                          parent_node,
-                                          acpi_ut_get_node_name(parent_node)));
-                        if (parent_node->name.integer) {
-                                return_VALUE((acpi_name) parent_node->name.
-                                             integer);
-                        }
-                }
-                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                  "Unable to find parent of %p (%4.4s)\n",
-                                  child_node,
-                                  acpi_ut_get_node_name(child_node)));
-        }
-        return_VALUE(ACPI_UNKNOWN_NAME);
-}
-#endif
diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c
index 00e79fb26029..2cd5be8fe10f 100644
--- a/drivers/acpi/acpica/nswalk.c
+++ b/drivers/acpi/acpica/nswalk.c
@@ -79,15 +79,6 @@ struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node
                return parent_node->child;
        }
-        /*
-         * Get the next node.
-         *
-         * If we are at the end of this peer list, return NULL
-         */
-        if (child_node->flags & ANOBJ_END_OF_PEER_LIST) {
-                return NULL;
-        }
        /* Otherwise just return the next peer */
        return child_node->peer;
@@ -146,9 +137,9 @@ struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type,
                        return (next_node);
                }
-                /* Otherwise, move on to the next node */
+                /* Otherwise, move on to the next peer node */
-                next_node = acpi_ns_get_next_valid_node(next_node);
+                next_node = next_node->peer;
        }
        /* Not found */
@@ -355,7 +346,7 @@ acpi_ns_walk_namespace(acpi_object_type type,
                         */
                        level--;
                        child_node = parent_node;
-                        parent_node = acpi_ns_get_parent_node(parent_node);
+                        parent_node = parent_node->parent;
                        node_previously_visited = TRUE;
                }
diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c
index eafef24ea448..a1f04e9b8030 100644
--- a/drivers/acpi/acpica/nsxfobj.c
+++ b/drivers/acpi/acpica/nsxfobj.c
@@ -190,7 +190,7 @@ acpi_status acpi_get_parent(acpi_handle handle, acpi_handle * ret_handle)
        /* Get the parent entry */
-        parent_node = acpi_ns_get_parent_node(node);
+        parent_node = node->parent;
        *ret_handle = ACPI_CAST_PTR(acpi_handle, parent_node);
        /* Return exception if parent is null */
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index 66116750a0f9..0558747579ef 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -813,10 +813,10 @@ acpi_status acpi_ut_init_globals(void)
        acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
        acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
        acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
+        acpi_gbl_root_node_struct.parent = NULL;
        acpi_gbl_root_node_struct.child = NULL;
        acpi_gbl_root_node_struct.peer = NULL;
        acpi_gbl_root_node_struct.object = NULL;
-        acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
 #ifdef ACPI_DEBUG_OUTPUT
        acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index db9d8ca57987..7f8cefcb2b32 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -293,12 +293,8 @@ acpi_status acpi_initialize_objects(u32 flags)
         * Complete the GPE initialization for the GPE blocks defined in the FADT
         * (GPE block 0 and 1).
         *
-         * Note1: This is where the _PRW methods are executed for the GPEs. These
+         * NOTE: Currently, there seems to be no need to run the _REG methods
-         * methods can only be executed after the SCI and Global Lock handlers are
+         * before enabling the GPEs.
-         * installed and initialized.
-         *
-         * Note2: Currently, there seems to be no need to run the _REG methods
-         * before execution of the _PRW methods and enabling of the GPEs.
         */
        if (!(flags & ACPI_NO_EVENT_INIT)) {
                status = acpi_ev_install_fadt_gpes();