Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (27 commits)
  ACPI / ACPICA: Simplify acpi_ev_initialize_gpe_block()
  ACPI / ACPICA: Fail acpi_gpe_wakeup() if ACPI_GPE_CAN_WAKE is unset
  ACPI / ACPICA: Do not execute _PRW methods during initialization
  ACPI: Fix bogus GPE test in acpi_bus_set_run_wake_flags()
  ACPICA: Update version to 20100702
  ACPICA: Fix for Alias references within Package objects
  ACPICA: Fix lint warning for 64-bit constant
  ACPICA: Remove obsolete GPE function
  ACPICA: Update debug output components
  ACPICA: Add support for WDDT - Watchdog Descriptor Table
  ACPICA: Drop acpi_set_gpe
  ACPICA: Use low-level GPE enable during GPE block initialization
  ACPI / EC: Do not use acpi_set_gpe
  ACPI / EC: Drop suspend and resume routines
  ACPICA: Remove wakeup GPE reference counting which is not used
  ACPICA: Introduce acpi_gpe_wakeup()
  ACPICA: Rename acpi_hw_gpe_register_bit
  ACPICA: Update version to 20100528
  ACPICA: Add signatures for undefined tables: ATKG, GSCI, IEIT
  ACPICA: Optimization: Reduce the number of namespace walks
  ...

48 files changed, 411 insertions, 876 deletions

diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index c3f43daa8be3..e0e6affb0d80 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -78,7 +78,9 @@ 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);
 
 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 899d68afc3c5..18e796fe4295 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..1ee0bcf399aa 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 */
@@ -428,7 +429,6 @@ 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_STATIC_POINTER       0x02
-#define AOPOBJ_DATA_VALID           0x04
-#define AOPOBJ_OBJECT_INITIALIZED   0x08
-#define AOPOBJ_SETUP_COMPLETE       0x10
-#define AOPOBJ_SINGLE_DATUM         0x20
-#define AOPOBJ_INVALID              0x40	/* Used if host OS won't allow an op_region address */
-#define AOPOBJ_MODULE_LEVEL         0x80
+#define AOPOBJ_AML_CONSTANT         0x01	/* Integer is an AML constant */
+#define AOPOBJ_STATIC_POINTER       0x02	/* Data is part of an ACPI table, don't delete */
+#define AOPOBJ_DATA_VALID           0x04	/* Object is intialized and data is valid */
+#define AOPOBJ_OBJECT_INITIALIZED   0x08	/* Region is initialized, _REG was run */
+#define AOPOBJ_SETUP_COMPLETE       0x10	/* Region setup is complete */
+#define AOPOBJ_INVALID              0x20	/* Host OS won't allow a Region address */
+#define AOPOBJ_MODULE_LEVEL         0x40	/* Method is actually module-level code */
+#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
-	/* Not implemented */
+	{{"_WDG", 0, ACPI_RTYPE_BUFFER}},
+	{{"_WED", 1,
+	  ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER}},
 
-	{{"_WDG", 0, ACPI_RTYPE_BUFFER}},  /* MS Extension */
-	{{"_WED", 1, ACPI_RTYPE_PACKAGE}}, /* MS Extension */
+	{{{0, 0, 0, 0}, 0, 0}}  /* Table terminator */
+};
 
+#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;
-	info.op_region_count = 0;
-	info.object_count = 0;
-	info.device_count = 0;
-	info.table_index = table_index;
+	/* Set all init info to zero */
+
+	ACPI_MEMSET(&info, 0, sizeof(struct acpi_init_walk_info));
+
 	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 =
-		    ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_ARG;
+		walk_state->arguments[i].flags = 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 =
-		    ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL;
+		walk_state->local_variables[i].flags = 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
- *              must be fully initialized at this point, including global lock
- *              support.
+ *              (0 and 1). The HW must be fully initialized at this point,
+ *              including global lock support.
  *
  ******************************************************************************/
 
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 7c2c336006a1..7a6a3e6f4be0 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -54,49 +54,84 @@ 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
- *              references (either wake or run) to this GPE
+ * DESCRIPTION: Updates GPE register enable mask based upon whether there are
+ *              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) {
-		ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit);
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * 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);
+