Merge branch 'linus' into perf/urgent

Merge reason: Fix upstream breakage introduced by:

 de5d9bf: Move list types from <linux/list.h> to <linux/types.h>.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

57 files changed, 676 insertions, 1009 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 746411518802..08e0140920e1 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -104,6 +104,24 @@ config ACPI_SYSFS_POWER
         help
           Say N to disable power /sys interface
 
+config ACPI_EC_DEBUGFS
+        tristate "EC read/write access through /sys/kernel/debug/ec"
+        default n
+        help
+          Say N to disable Embedded Controller /sys/kernel/debug interface
+
+          Be aware that using this interface can confuse your Embedded
+          Controller in a way that a normal reboot is not enough. You then
+          have to power of your system, and remove the laptop battery for
+          some seconds.
+          An Embedded Controller typically is available on laptops and reads
+          sensor values like battery state and temperature.
+          The kernel accesses the EC through ACPI parsed code provided by BIOS
+          tables. This option allows to access the EC directly without ACPI
+          code being involved.
+          Thus this option is a debug option that helps to write ACPI drivers
+          and can be used to identify ACPI code or EC firmware bugs.
+
 config ACPI_PROC_EVENT
         bool "Deprecated /proc/acpi/event support"
         depends on PROC_FS
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 6ee33169e1dc..833b582d1762 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_ACPI_SBS)		+= sbshc.o
 obj-$(CONFIG_ACPI_SBS)          += sbs.o
 obj-$(CONFIG_ACPI_POWER_METER)  += power_meter.o
 obj-$(CONFIG_ACPI_HED)          += hed.o
+obj-$(CONFIG_ACPI_EC_DEBUGFS)   += ec_sys.o
 
 # processor has its own "processor." module_param namespace
 processor-y                     := processor_driver.o processor_throttling.o
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 446aced33aff..b76848c80be3 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -77,7 +77,7 @@ static void power_saving_mwait_init(void)
         power_saving_mwait_eax = (highest_cstate << MWAIT_SUBSTATE_SIZE) |
                 (highest_subcstate - 1);
 
-#if defined(CONFIG_GENERIC_TIME) && defined(CONFIG_X86)
+#if defined(CONFIG_X86)
         switch (boot_cpu_data.x86_vendor) {
         case X86_VENDOR_AMD:
         case X86_VENDOR_INTEL:
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);
+
+        return_ACPI_STATUS(status);
 }
 
 
@@ -417,8 +452,12 @@ 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
-         * is no, they should only be enabled just as the machine goes to sleep.
+         * Enable all GPEs that have a corresponding method.  Any other GPEs
+         * 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",
-                                  gpe_enabled_count, wake_gpe_count));
+                                  "Enabled %u GPEs in this block\n",
+                                  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,
- *              run any newly loaded _PRW methods in order to discover any
- *              new CAN_WAKE GPEs.
+ *              enable and runtime GPEs that are associated with them.
  *
  ******************************************************************************/
 
@@ -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
-         * marked as CAN_WAKE are immediately enabled.
+         * Any GPEs that correspond to new _Lxx/_Exx methods are immediately
+         * 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) {
-                ACPI_INFO((AE_INFO,
-                           "Enabled %u new runtime GPEs, added %u new wakeup GPEs",
-                           walk_info.count, new_wake_gpe_count));
+        if (walk_info.count) {
+                ACPI_INFO((AE_INFO, "Enabled %u new GPEs", walk_info.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) ||
-                    !acpi_gbl_leave_wake_gpes_disabled) {
-                        walk_info->count++;
-                        gpe_device = walk_info->gpe_device;
-
-                        if (gpe_device == acpi_gbl_fadt_gpe_device) {
-                                gpe_device = NULL;
-                        }
+                if (gpe_device == acpi_gbl_fadt_gpe_device) {
+                        gpe_device = NULL;
+                }
 
-                        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",
-                                                gpe_number));
-                        }
+                status = acpi_enable_gpe(gpe_device, gpe_number);
+                if (ACPI_FAILURE(status)) {
+                        ACPI_EXCEPTION((AE_INFO, status,
+                                        "Could not enable GPE 0x%02X",
+                                        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/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index 18b3f1468b7d..0ec900da5794 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
- *
- * 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
+ * FUNCTION:    acpi_gpe_wakeup
  *
  * 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
- *              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.
+ * DESCRIPTION: Set or clear the GPE's wakeup enable mask bit.
  *
  ******************************************************************************/
-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)
 
 /*******************************************************************************
  *
@@ -315,17 +285,14 @@ 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
- *              is updated (for wake GPEs).
+ *              hardware-enabled.
  *
  ******************************************************************************/
-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;
         struct acpi_gpe_event_info *gpe_event_info;
@@ -333,12 +300,6 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
 
         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 */
@@ -349,46 +310,19 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
                 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_event_info->runtime_count == ACPI_UINT8_MAX) {
+                status = AE_LIMIT;      /* Too many references */
+                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;
+        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 (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);
+                if (ACPI_FAILURE(status)) {
+                        gpe_event_info->runtime_count--;
                 }
         }
 
@@ -404,8 +338,6 @@ 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
  *
@@ -414,7 +346,7 @@ 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;
         struct acpi_gpe_event_info *gpe_event_info;
@@ -422,12 +354,6 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
 
         ACPI_FUNCTION_TRACE(acpi_disable_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 */
@@ -440,41 +366,21 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
 
         /* Hardware-disable a runtime GPE on removal of the last reference */
 
-        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;
-                        }
-                }
+        if (!gpe_event_info->runtime_count) {
+                status = AE_LIMIT;      /* There are no references to remove */
+                goto unlock_and_exit;
         }
 
-        /*
-         * Update masks for wake GPE on removal of the last reference.
-         * No need to hardware-disable wake GPEs here, they are not currently
-         * 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->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);
                 }
-
-                gpe_event_info->wakeup_count--;
-                if (!gpe_event_info->wakeup_count) {
-                        status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
+                if (ACPI_FAILURE(status)) {
+                        gpe_event_info->runtime_count++;
                 }
         }
 
@@ -486,6 +392,59 @@ 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;
+        u8 disable = 0;
+
+        ACPI_FUNCTION_TRACE(acpi_gpe_can_wake);
+
+        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;
+        }
+
+        if (gpe_event_info->flags & ACPI_GPE_CAN_WAKE) {
+                goto unlock_and_exit;
+        }
+
+        gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
+        disable = (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD)
+                && gpe_event_info->runtime_count;
+
+unlock_and_exit:
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
+        if (disable)
+                status = acpi_disable_gpe(gpe_device, gpe_number);
+
+        return_ACPI_STATUS(status);
+}
+ACPI_EXPORT_SYMBOL(acpi_gpe_can_wake)
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_disable_event
  *
  * PARAMETERS:  Event           - The fixed eventto be enabled
@@ -800,7 +759,7 @@ 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 =
-                                    acpi_ns_get_parent_node(prefix_node);
+                                prefix_node = prefix_node->parent;
                         }
                 }
         }
@@ -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;
-                if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
-                        prev_node->flags |= ANOBJ_END_OF_PEER_LIST;
-                }
+                prev_node->peer = node->peer;
         } else {
-                /* Node is first child (has no previous peer) */
-
-                if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
-
-                        /* No peers at all */
-
-                        parent_node->child = NULL;
-                } else {        /* Link peer list to parent */
-
-                        parent_node->child = next_node->peer;
-                }
+                /*
+                 * Node is first child (has no previous peer).
+                 * Link peer list to parent
+                 */
+                parent_node->child = 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 {
-
-                /* Get the things we need */
-
-                next_node = child_node->peer;
-                flags = child_node->flags;
+        next_node = parent_node->child;
+        while (next_node) {
 
                 /* 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);
-                child_node = next_node;
-
-        } while (!(flags & ANOBJ_END_OF_PEER_LIST));
+                node_to_delete = next_node;
+                next_node = next_node->peer;
+                acpi_ns_delete_node(node_to_delete);
+        };
 
         /* 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 "
-                              "Buffers %hd/%hd Packages (%hd nodes)\n",
+                              "\nInitialized %u/%u Regions %u/%u Fields %u/%u "
+                              "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 "
-                              "(examined %hd objects)\n",
+                              "\nExecuted %u _INI methods requiring %u _STA executions "
+                              "(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",
-                          (unsigned)pass_number));
+        ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %u parse\n",
+                          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
-         * methods can only be executed after the SCI and Global Lock handlers are
-         * 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.
+         * NOTE: Currently, there seems to be no need to run the _REG methods
+         * before enabling the GPEs.
          */
         if (!(flags & ACPI_NO_EVENT_INIT)) {
                 status = acpi_ev_install_fadt_gpes();
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index 864dd46c346f..18645f4e83cd 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -33,6 +33,7 @@
 #include <linux/uaccess.h>
 #include <linux/cper.h>
 #include <linux/nmi.h>
+#include <linux/hardirq.h>
 #include <acpi/apei.h>
 
 #include "apei-internal.h"
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 7d857dabdde4..1575a9b51f1d 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -424,8 +424,7 @@ static int acpi_button_add(struct acpi_device *device)
         if (device->wakeup.flags.valid) {
                 /* Button's GPE is run-wake GPE */
                 acpi_enable_gpe(device->wakeup.gpe_device,
-                                device->wakeup.gpe_number,
-                                ACPI_GPE_TYPE_RUNTIME);
+                                device->wakeup.gpe_number);
                 device->wakeup.run_wake_count++;
                 device->wakeup.state.enabled = 1;
         }
@@ -448,8 +447,7 @@ static int acpi_button_remove(struct acpi_device *device, int type)
 
         if (device->wakeup.flags.valid) {
                 acpi_disable_gpe(device->wakeup.gpe_device,
-                                device->wakeup.gpe_number,
-                                ACPI_GPE_TYPE_RUNTIME);
+                                device->wakeup.gpe_number);
                 device->wakeup.run_wake_count--;
                 device->wakeup.state.enabled = 0;
         }
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index 146135e7a6a1..295dbfa2db9c 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -96,7 +96,8 @@ static const struct acpi_dlevel acpi_debug_levels[] = {
 /* --------------------------------------------------------------------------
                               FS Interface (/sys)
    -------------------------------------------------------------------------- */
-static int param_get_debug_layer(char *buffer, struct kernel_param *kp) {
+static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
+{
         int result = 0;
         int i;
 
@@ -118,7 +119,8 @@ static int param_get_debug_layer(char *buffer, struct kernel_param *kp) {
         return result;
 }
 
-static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
+static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
+{
         int result = 0;
         int i;
 
@@ -137,8 +139,18 @@ static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
         return result;
 }
 
-module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
-module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
+static struct kernel_param_ops acpi_debug_layer_ops = {
+        .set = param_set_uint,
+        .get = param_get_debug_layer,
+};
+
+static struct kernel_param_ops acpi_debug_level_ops = {
+        .set = param_set_uint,
+        .get = param_get_debug_level,
+};
+
+module_param_cb(debug_layer, &acpi_debug_layer_ops, &acpi_dbg_layer, 0644);
+module_param_cb(debug_level, &acpi_debug_level_ops, &acpi_dbg_level, 0644);
 
 static char trace_method_name[6];
 module_param_string(trace_method_name, trace_method_name, 6, 0644);
@@ -147,7 +159,7 @@ module_param(trace_debug_layer, uint, 0644);
 static unsigned int trace_debug_level;
 module_param(trace_debug_level, uint, 0644);
 
-static int param_set_trace_state(const char *val, struct kernel_param *kp)
+static int param_set_trace_state(const char *val, const struct kernel_param *kp)
 {
         int result = 0;
 
@@ -181,7 +193,7 @@ exit:
         return result;
 }
 
-static int param_get_trace_state(char *buffer, struct kernel_param *kp)
+static int param_get_trace_state(char *buffer, const struct kernel_param *kp)
 {
         if (!acpi_gbl_trace_method_name)
                 return sprintf(buffer, "disable");
@@ -194,8 +206,12 @@ static int param_get_trace_state(char *buffer, struct kernel_param *kp)
         return 0;
 }
 
-module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
-                  NULL, 0644);
+static struct kernel_param_ops param_ops_trace_state = {
+        .set = param_set_trace_state,
+        .get = param_get_trace_state,
+};
+
+module_param_cb(trace_state, &param_ops_trace_state, NULL, 0644);
 
 /* --------------------------------------------------------------------------
                                 DebugFS Interface
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 5f2027d782e8..f31291ba94d0 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -34,8 +34,6 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/delay.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
@@ -45,10 +43,13 @@
 #include <acpi/acpi_drivers.h>
 #include <linux/dmi.h>
 
+#include "internal.h"
+
 #define ACPI_EC_CLASS                   "embedded_controller"
 #define ACPI_EC_DEVICE_NAME             "Embedded Controller"
 #define ACPI_EC_FILE_INFO               "info"
 
+#undef PREFIX
 #define PREFIX                          "ACPI: EC: "
 
 /* EC status register */
@@ -106,19 +107,8 @@ struct transaction {
         bool done;
 };
 
-static struct acpi_ec {
-        acpi_handle handle;
-        unsigned long gpe;
-        unsigned long command_addr;
-        unsigned long data_addr;
-        unsigned long global_lock;
-        unsigned long flags;
-        struct mutex lock;
-        wait_queue_head_t wait;
-        struct list_head list;
-        struct transaction *curr;
-        spinlock_t curr_lock;
-} *boot_ec, *first_ec;
+struct acpi_ec *boot_ec, *first_ec;
+EXPORT_SYMBOL(first_ec);
 
 static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */
 static int EC_FLAGS_VALIDATE_ECDT; /* ASUStec ECDTs need to be validated */
@@ -313,11 +303,8 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
         pr_debug(PREFIX "transaction start\n");
         /* disable GPE during transaction if storm is detected */
         if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
-                /*
-                 * It has to be disabled at the hardware level regardless of the
-                 * GPE reference counting, so that it doesn't trigger.
-                 */
-                acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE);
+                /* It has to be disabled, so that it doesn't trigger. */
+                acpi_disable_gpe(NULL, ec->gpe);
         }
 
         status = acpi_ec_transaction_unlocked(ec, t);
@@ -326,12 +313,8 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
         ec_check_sci_sync(ec, acpi_ec_read_status(ec));
         if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
                 msleep(1);
-                /*
-                 * It is safe to enable the GPE outside of the transaction.  Use
-                 * acpi_set_gpe() for that, since we used it to disable the GPE
-                 * above.
-                 */
-                acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE);
+                /* It is safe to enable the GPE outside of the transaction. */
+                acpi_enable_gpe(NULL, ec->gpe);
         } else if (t->irq_count > ACPI_EC_STORM_THRESHOLD) {
                 pr_info(PREFIX "GPE storm detected, "
                         "transactions will use polling mode\n");
@@ -679,72 +662,6 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 }
 
 /* --------------------------------------------------------------------------
-                              FS Interface (/proc)
-   -------------------------------------------------------------------------- */
-
-static struct proc_dir_entry *acpi_ec_dir;
-
-static int acpi_ec_read_info(struct seq_file *seq, void *offset)
-{
-        struct acpi_ec *ec = seq->private;
-
-        if (!ec)
-                goto end;
-
-        seq_printf(seq, "gpe:\t\t\t0x%02x\n", (u32) ec->gpe);
-        seq_printf(seq, "ports:\t\t\t0x%02x, 0x%02x\n",
-                   (unsigned)ec->command_addr, (unsigned)ec->data_addr);
-        seq_printf(seq, "use global lock:\t%s\n",
-                   ec->global_lock ? "yes" : "no");
-      end:
-        return 0;
-}
-
-static int acpi_ec_info_open_fs(struct inode *inode, struct file *file)
-{
-        return single_open(file, acpi_ec_read_info, PDE(inode)->data);
-}
-
-static const struct file_operations acpi_ec_info_ops = {
-        .open = acpi_ec_info_open_fs,
-        .read = seq_read,
-        .llseek = seq_lseek,
-        .release = single_release,
-        .owner = THIS_MODULE,
-};
-
-static int acpi_ec_add_fs(struct acpi_device *device)
-{
-        struct proc_dir_entry *entry = NULL;
-
-        if (!acpi_device_dir(device)) {
-                acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
-                                                     acpi_ec_dir);
-                if (!acpi_device_dir(device))
-                        return -ENODEV;
-        }
-
-        entry = proc_create_data(ACPI_EC_FILE_INFO, S_IRUGO,
-                                 acpi_device_dir(device),
-                                 &acpi_ec_info_ops, acpi_driver_data(device));
-        if (!entry)
-                return -ENODEV;
-        return 0;
-}
-
-static int acpi_ec_remove_fs(struct acpi_device *device)
-{
-
-        if (acpi_device_dir(device)) {
-                remove_proc_entry(ACPI_EC_FILE_INFO, acpi_device_dir(device));
-                remove_proc_entry(acpi_device_bid(device), acpi_ec_dir);
-                acpi_device_dir(device) = NULL;
-        }
-
-        return 0;
-}
-
-/* --------------------------------------------------------------------------
                                Driver Interface
    -------------------------------------------------------------------------- */
 static acpi_status
@@ -822,7 +739,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
         if (ACPI_FAILURE(status))
                 return -ENODEV;
 
-        acpi_enable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+        acpi_enable_gpe(NULL, ec->gpe);
         status = acpi_install_address_space_handler(ec->handle,
                                                     ACPI_ADR_SPACE_EC,
                                                     &acpi_ec_space_handler,
@@ -839,7 +756,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
                 } else {
                         acpi_remove_gpe_handler(NULL, ec->gpe,
                                 &acpi_ec_gpe_handler);
-                        acpi_disable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+                        acpi_disable_gpe(NULL, ec->gpe);
                         return -ENODEV;
                 }
         }
@@ -850,7 +767,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
 
 static void ec_remove_handlers(struct acpi_ec *ec)
 {
-        acpi_disable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+        acpi_disable_gpe(NULL, ec->gpe);
         if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,
                                 ACPI_ADR_SPACE_EC, &acpi_ec_space_handler)))
                 pr_err(PREFIX "failed to remove space handler\n");
@@ -894,7 +811,12 @@ static int acpi_ec_add(struct acpi_device *device)
         if (!first_ec)
                 first_ec = ec;
         device->driver_data = ec;
-        acpi_ec_add_fs(device);
+
+        WARN(!request_region(ec->data_addr, 1, "EC data"),
+             "Could not request EC data io port 0x%lx", ec->data_addr);
+        WARN(!request_region(ec->command_addr, 1, "EC cmd"),
+             "Could not request EC cmd io port 0x%lx", ec->command_addr);
+
         pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n",
                           ec->gpe, ec->command_addr, ec->data_addr);
 
@@ -921,7 +843,8 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
                 kfree(handler);
         }
         mutex_unlock(&ec->lock);
-        acpi_ec_remove_fs(device);
+        release_region(ec->data_addr, 1);
+        release_region(ec->command_addr, 1);
         device->driver_data = NULL;
         if (ec == first_ec)
                 first_ec = NULL;
@@ -1088,22 +1011,6 @@ error:
         return -ENODEV;
 }
 
-static int acpi_ec_suspend(struct acpi_device *device, pm_message_t state)
-{
-        struct acpi_ec *ec = acpi_driver_data(device);
-        /* Stop using the GPE, but keep it reference counted. */
-        acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE);
-        return 0;
-}
-
-static int acpi_ec_resume(struct acpi_device *device)
-{
-        struct acpi_ec *ec = acpi_driver_data(device);
-        /* Enable the GPE again, but don't reference count it once more. */
-        acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE);
-        return 0;
-}
-
 static struct acpi_driver acpi_ec_driver = {
         .name = "ec",
         .class = ACPI_EC_CLASS,
@@ -1111,8 +1018,6 @@ static struct acpi_driver acpi_ec_driver = {
         .ops = {
                 .add = acpi_ec_add,
                 .remove = acpi_ec_remove,
-                .suspend = acpi_ec_suspend,
-                .resume = acpi_ec_resume,
                 },
 };
 
@@ -1120,16 +1025,10 @@ int __init acpi_ec_init(void)
 {
         int result = 0;
 
-        acpi_ec_dir = proc_mkdir(ACPI_EC_CLASS, acpi_root_dir);
-        if (!acpi_ec_dir)
-                return -ENODEV;
-
         /* Now register the driver for the EC */
         result = acpi_bus_register_driver(&acpi_ec_driver);
-        if (result < 0) {
-                remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
+        if (result < 0)
                 return -ENODEV;
-        }
 
         return result;
 }
@@ -1140,9 +1039,6 @@ static void __exit acpi_ec_exit(void)
 {
 
         acpi_bus_unregister_driver(&acpi_ec_driver);
-
-        remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
-
         return;
 }
 #endif  /* 0 */
diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c
new file mode 100644
index 000000000000..0e869b3f81ca
--- /dev/null
+++ b/drivers/acpi/ec_sys.c
@@ -0,0 +1,160 @@
+/*
+ * ec_sys.c
+ *
+ * Copyright (C) 2010 SUSE Products GmbH/Novell
+ * Author:
+ *      Thomas Renninger <trenn@suse.de>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/debugfs.h>
+#include "internal.h"
+
+MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
+MODULE_DESCRIPTION("ACPI EC sysfs access driver");
+MODULE_LICENSE("GPL");
+
+static bool write_support;
+module_param(write_support, bool, 0644);
+MODULE_PARM_DESC(write_support, "Dangerous, reboot and removal of battery may "
+                 "be needed.");
+
+#define EC_SPACE_SIZE 256
+
+struct sysdev_class acpi_ec_sysdev_class = {
+        .name = "ec",
+};
+
+static struct dentry *acpi_ec_debugfs_dir;
+
+static int acpi_ec_open_io(struct inode *i, struct file *f)
+{
+        f->private_data = i->i_private;
+        return 0;
+}
+
+static ssize_t acpi_ec_read_io(struct file *f, char __user *buf,
+                               size_t count, loff_t *off)
+{
+        /* Use this if support reading/writing multiple ECs exists in ec.c:
+         * struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private;
+         */
+        unsigned int size = EC_SPACE_SIZE;
+        u8 *data = (u8 *) buf;
+        loff_t init_off = *off;
+        int err = 0;
+
+        if (*off >= size)
+                return 0;
+        if (*off + count >= size) {
+                size -= *off;
+                count = size;
+        } else
+                size = count;
+
+        while (size) {
+                err = ec_read(*off, &data[*off - init_off]);
+                if (err)
+                        return err;
+                *off += 1;
+                size--;
+        }
+        return count;
+}
+
+static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf,
+                                size_t count, loff_t *off)
+{
+        /* Use this if support reading/writing multiple ECs exists in ec.c:
+         * struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private;
+         */
+
+        unsigned int size = count;
+        loff_t init_off = *off;
+        u8 *data = (u8 *) buf;
+        int err = 0;
+
+        if (*off >= EC_SPACE_SIZE)
+                return 0;
+        if (*off + count >= EC_SPACE_SIZE) {
+                size = EC_SPACE_SIZE - *off;
+                count = size;
+        }
+
+        while (size) {
+                u8 byte_write = data[*off - init_off];
+                err = ec_write(*off, byte_write);
+                if (err)
+                        return err;
+
+                *off += 1;
+                size--;
+        }
+        return count;
+}
+
+static struct file_operations acpi_ec_io_ops = {
+        .owner = THIS_MODULE,
+        .open  = acpi_ec_open_io,
+        .read  = acpi_ec_read_io,
+        .write = acpi_ec_write_io,
+};
+
+int acpi_ec_add_debugfs(struct acpi_ec *ec, unsigned int ec_device_count)
+{
+        struct dentry *dev_dir;
+        char name[64];
+        mode_t mode = 0400;
+
+        if (ec_device_count == 0) {
+                acpi_ec_debugfs_dir = debugfs_create_dir("ec", NULL);
+                if (!acpi_ec_debugfs_dir)
+                        return -ENOMEM;
+        }
+
+        sprintf(name, "ec%u", ec_device_count);
+        dev_dir = debugfs_create_dir(name, acpi_ec_debugfs_dir);
+        if (!dev_dir) {
+                if (ec_device_count != 0)
+                        goto error;
+                return -ENOMEM;
+        }
+
+        if (!debugfs_create_x32("gpe", 0444, dev_dir, (u32 *)&first_ec->gpe))
+                goto error;
+        if (!debugfs_create_bool("use_global_lock", 0444, dev_dir,
+                                 (u32 *)&first_ec->global_lock))
+                goto error;
+
+        if (write_support)
+                mode = 0600;
+        if (!debugfs_create_file("io", mode, dev_dir, ec, &acpi_ec_io_ops))
+                goto error;
+
+        return 0;
+
+error:
+        debugfs_remove_recursive(acpi_ec_debugfs_dir);
+        return -ENOMEM;
+}
+
+static int __init acpi_ec_sys_init(void)
+{
+        int err = 0;
+        if (first_ec)
+                err = acpi_ec_add_debugfs(first_ec, 0);
+        else
+                err = -ENODEV;
+        return err;
+}
+
+static void __exit acpi_ec_sys_exit(void)
+{
+        debugfs_remove_recursive(acpi_ec_debugfs_dir);
+}
+
+module_init(acpi_ec_sys_init);
+module_exit(acpi_ec_sys_exit);
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index f8f190ec066e..8ae27264a00e 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -18,6 +18,11 @@
  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#ifndef _ACPI_INTERNAL_H_
+#define _ACPI_INTERNAL_H_
+
+#include <linux/sysdev.h>
+
 #define PREFIX "ACPI: "
 
 int init_acpi_device_notify(void);
@@ -46,6 +51,23 @@ void acpi_early_processor_set_pdc(void);
 /* --------------------------------------------------------------------------
                                   Embedded Controller
    -------------------------------------------------------------------------- */
+struct acpi_ec {
+        acpi_handle handle;
+        unsigned long gpe;
+        unsigned long command_addr;
+        unsigned long data_addr;
+        unsigned long global_lock;
+        unsigned long flags;
+        struct mutex lock;
+        wait_queue_head_t wait;
+        struct list_head list;
+        struct transaction *curr;
+        spinlock_t curr_lock;
+        struct sys_device sysdev;
+};
+
+extern struct acpi_ec *first_ec;
+
 int acpi_ec_init(void);
 int acpi_ec_ecdt_probe(void);
 int acpi_boot_ec_enable(void);
@@ -63,3 +85,5 @@ int acpi_sleep_proc_init(void);
 #else
 static inline int acpi_sleep_proc_init(void) { return 0; }
 #endif
+
+#endif /* _ACPI_INTERNAL_H_ */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 78418ce4fc78..f14d3f251d26 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -191,36 +191,11 @@ acpi_status __init acpi_os_initialize(void)
         return AE_OK;
 }
 
-static void bind_to_cpu0(struct work_struct *work)
-{
-        set_cpus_allowed_ptr(current, cpumask_of(0));
-        kfree(work);
-}
-
-static void bind_workqueue(struct workqueue_struct *wq)
-{
-        struct work_struct *work;
-
-        work = kzalloc(sizeof(struct work_struct), GFP_KERNEL);
-        INIT_WORK(work, bind_to_cpu0);
-        queue_work(wq, work);
-}
-
 acpi_status acpi_os_initialize1(void)
 {
-        /*
-         * On some machines, a software-initiated SMI causes corruption unless
-         * the SMI runs on CPU 0.  An SMI can be initiated by any AML, but
-         * typically it's done in GPE-related methods that are run via
-         * workqueues, so we can avoid the known corruption cases by binding
-         * the workqueues to CPU 0.
-         */
-        kacpid_wq = create_singlethread_workqueue("kacpid");
-        bind_workqueue(kacpid_wq);
-        kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
-        bind_workqueue(kacpi_notify_wq);
-        kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug");
-        bind_workqueue(kacpi_hotplug_wq);
+        kacpid_wq = create_workqueue("kacpid");
+        kacpi_notify_wq = create_workqueue("kacpi_notify");
+        kacpi_hotplug_wq = create_workqueue("kacpi_hotplug");
         BUG_ON(!kacpid_wq);
         BUG_ON(!kacpi_notify_wq);
         BUG_ON(!kacpi_hotplug_wq);
@@ -766,7 +741,14 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
         else
                 INIT_WORK(&dpc->work, acpi_os_execute_deferred);
 
-        ret = queue_work(queue, &dpc->work);
+        /*
+         * On some machines, a software-initiated SMI causes corruption unless
+         * the SMI runs on CPU 0.  An SMI can be initiated by any AML, but
+         * typically it's done in GPE-related methods that are run via
+         * workqueues, so we can avoid the known corruption cases by always
+         * queueing on CPU 0.
+         */
+        ret = queue_work_on(0, queue, &dpc->work);
 
         if (!ret) {
                 printk(KERN_ERR PREFIX
@@ -1064,26 +1046,6 @@ static int __init acpi_serialize_setup(char *str)
 
 __setup("acpi_serialize", acpi_serialize_setup);
 
-/*
- * Wake and Run-Time GPES are expected to be separate.
- * We disable wake-GPEs at run-time to prevent spurious
- * interrupts.
- *
- * However, if a system exists that shares Wake and
- * Run-time events on the same GPE this flag is available
- * to tell Linux to keep the wake-time GPEs enabled at run-time.
- */
-static int __init acpi_wake_gpes_always_on_setup(char *str)
-{
-        printk(KERN_INFO PREFIX "wake GPEs not disabled\n");
-
-        acpi_gbl_leave_wake_gpes_disabled = FALSE;
-
-        return 1;
-}
-
-__setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup);
-
 /* Check of resource interference between native drivers and ACPI
  * OperationRegions (SystemIO and System Memory only).
  * IO ports and memory declared in ACPI might be used by the ACPI subsystem
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 4eac59393edc..1f67057af2a5 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -33,6 +33,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/pci.h>
 #include <linux/pci-acpi.h>
+#include <linux/pci-aspm.h>
 #include <linux/acpi.h>
 #include <linux/slab.h>
 #include <acpi/acpi_bus.h>
@@ -543,6 +544,14 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
         if (flags != base_flags)
                 acpi_pci_osc_support(root, flags);
 
+        status = acpi_pci_osc_control_set(root->device->handle,
+                                          OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
+
+        if (ACPI_FAILURE(status)) {
+                printk(KERN_INFO "Unable to assume PCIe control: Disabling ASPM\n");
+                pcie_no_aspm();
+        }
+
         pci_acpi_add_bus_pm_notifier(device, root->bus);
         if (device->wakeup.flags.run_wake)
                 device_set_run_wake(root->bus->bridge, true);
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index e9a8026d39f0..b4c2f3bdadeb 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -164,7 +164,7 @@ static void lapic_timer_check_state(int state, struct acpi_processor *pr,
         if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT))
                 return;
 
-        if (boot_cpu_has(X86_FEATURE_AMDC1E))
+        if (c1e_detected)
                 type = ACPI_STATE_C1;
 
         /*
@@ -264,7 +264,7 @@ int acpi_processor_resume(struct acpi_device * device)
         return 0;
 }
 
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
+#if defined(CONFIG_X86)
 static void tsc_check_state(int state)
 {
         switch (boot_cpu_data.x86_vendor) {
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 7f2e051ed4f1..b23825ecfa37 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -740,6 +740,8 @@ acpi_bus_extract_wakeup_device_power_package(struct acpi_device *device,
                 device->wakeup.resources.handles[i] = element->reference.handle;
         }
 
+        acpi_gpe_can_wake(device->wakeup.gpe_device, device->wakeup.gpe_number);
+
         return AE_OK;
 }
 
@@ -764,8 +766,9 @@ static void acpi_bus_set_run_wake_flags(struct acpi_device *device)
                 return;
         }
 
-        status = acpi_get_gpe_status(NULL, device->wakeup.gpe_number,
-                                        &event_status);
+        status = acpi_get_gpe_status(device->wakeup.gpe_device,
+                                        device->wakeup.gpe_number,
+                                                &event_status);
         if (status == AE_OK)
                 device->wakeup.flags.run_wake =
                                 !!(event_status & ACPI_EVENT_FLAG_HANDLE);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 2862c781b372..e143203254a4 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -663,18 +663,9 @@ int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
                 return -ENODEV;
         }
 
-        if (enable) {
-                error = acpi_enable_wakeup_device_power(adev,
-                                                acpi_target_sleep_state);
-                if (!error)
-                        acpi_enable_gpe(adev->wakeup.gpe_device,
-                                        adev->wakeup.gpe_number,
-                                        ACPI_GPE_TYPE_WAKE);
-        } else {
-                acpi_disable_gpe(adev->wakeup.gpe_device, adev->wakeup.gpe_number,
-                                ACPI_GPE_TYPE_WAKE);
-                error = acpi_disable_wakeup_device_power(adev);
-        }
+        error = enable ?
+                acpi_enable_wakeup_device_power(adev, acpi_target_sleep_state) :
+                acpi_disable_wakeup_device_power(adev);
         if (!error)
                 dev_info(dev, "wake-up capability %s by ACPI\n",
                                 enable ? "enabled" : "disabled");
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index f8db50a0941c..5981bd07e20e 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -388,12 +388,10 @@ static ssize_t counter_set(struct kobject *kobj,
         if (index < num_gpes) {
                 if (!strcmp(buf, "disable\n") &&
                                 (status & ACPI_EVENT_FLAG_ENABLED))
-                        result = acpi_disable_gpe(handle, index,
-                                                ACPI_GPE_TYPE_RUNTIME);
+                        result = acpi_disable_gpe(handle, index);
                 else if (!strcmp(buf, "enable\n") &&
                                 !(status & ACPI_EVENT_FLAG_ENABLED))
-                        result = acpi_enable_gpe(handle, index,
-                                                ACPI_GPE_TYPE_RUNTIME);
+                        result = acpi_enable_gpe(handle, index);
                 else if (!strcmp(buf, "clear\n") &&
                                 (status & ACPI_EVENT_FLAG_SET))
                         result = acpi_clear_gpe(handle, index);
diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c
index 388747a7ef4f..c80537bc3234 100644
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -64,13 +64,14 @@ void acpi_enable_wakeup_device(u8 sleep_state)
                 struct acpi_device *dev =
                         container_of(node, struct acpi_device, wakeup_list);
 
-                if (!dev->wakeup.flags.valid || !dev->wakeup.state.enabled
+                if (!dev->wakeup.flags.valid
+                    || !(dev->wakeup.state.enabled || dev->wakeup.prepare_count)
                     || sleep_state > (u32) dev->wakeup.sleep_state)
                         continue;
 
                 /* The wake-up power should have been enabled already. */
-                acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number,
-                                ACPI_GPE_TYPE_WAKE);
+                acpi_gpe_wakeup(dev->wakeup.gpe_device, dev->wakeup.gpe_number,
+                                ACPI_GPE_ENABLE);
         }
 }
 
@@ -89,13 +90,16 @@ void acpi_disable_wakeup_device(u8 sleep_state)
                 struct acpi_device *dev =
                         container_of(node, struct acpi_device, wakeup_list);
 
-                if (!dev->wakeup.flags.valid || !dev->wakeup.state.enabled
+                if (!dev->wakeup.flags.valid
+                    || !(dev->wakeup.state.enabled || dev->wakeup.prepare_count)
                     || (sleep_state > (u32) dev->wakeup.sleep_state))
                         continue;
 
-                acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number,
-                                ACPI_GPE_TYPE_WAKE);
-                acpi_disable_wakeup_device_power(dev);
+                acpi_gpe_wakeup(dev->wakeup.gpe_device, dev->wakeup.gpe_number,
+                                ACPI_GPE_DISABLE);
+
+                if (dev->wakeup.state.enabled)
+                        acpi_disable_wakeup_device_power(dev);
         }
 }