4 files changed, 79 insertions, 48 deletions

diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index aa179dc78011..23fe53ba7375 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -488,9 +488,9 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
  *
  * RETURN:      None
  *
- * DESCRIPTION: Perform the actual execution of a GPE control method.  This
- *              function is called from an invocation of acpi_os_exece
- *              (and therefore does NOT execute at interrupt level) so that
+ * DESCRIPTION: Perform the actual execution of a GPE control method. This
+ *              function is called from an invocation of acpi_os_execute and
+ *              therefore does NOT execute at interrupt level - so that
  *              the control method itself is not executed in the context of
  *              an interrupt handler.
  *
@@ -502,7 +502,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
         u32 gpe_number = 0;
         acpi_status status;
         struct acpi_gpe_event_info local_gpe_event_info;
-        struct acpi_parameter_info info;
+        struct acpi_evaluate_info *info;
 
         ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
 
@@ -540,16 +540,29 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
          */
         if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) ==
             ACPI_GPE_DISPATCH_METHOD) {
-                /*
-                 * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
-                 * control method that corresponds to this GPE
-                 */
-                info.node = local_gpe_event_info.dispatch.method_node;
-                info.parameters =
-                    ACPI_CAST_PTR(union acpi_operand_object *, gpe_event_info);
-                info.parameter_type = ACPI_PARAM_GPE;
 
-                status = acpi_ns_evaluate_by_handle(&info);
+                /* Allocate the evaluation information block */
+
+                info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+                if (!info) {
+                        status = AE_NO_MEMORY;
+                } else {
+                        /*
+                         * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
+                         * control method that corresponds to this GPE
+                         */
+                        info->prefix_node =
+                            local_gpe_event_info.dispatch.method_node;
+                        info->parameters =
+                            ACPI_CAST_PTR(union acpi_operand_object *,
+                                          gpe_event_info);
+                        info->parameter_type = ACPI_PARAM_GPE;
+                        info->flags = ACPI_IGNORE_RETURN_VALUE;
+
+                        status = acpi_ns_evaluate(info);
+                        ACPI_FREE(info);
+                }
+
                 if (ACPI_FAILURE(status)) {
                         ACPI_EXCEPTION((AE_INFO, status,
                                         "While evaluating method [%4.4s] for GPE[%2X]",
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index 24e0b8d36f31..6eef4efddcf6 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -49,12 +49,13 @@
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evmisc")
 
+/* Names for Notify() values, used for debug output */
 #ifdef ACPI_DEBUG_OUTPUT
 static const char *acpi_notify_value_names[] = {
         "Bus Check",
         "Device Check",
         "Device Wake",
-        "Eject request",
+        "Eject Request",
         "Device Check Light",
         "Frequency Mismatch",
         "Bus Mode Mismatch",
@@ -191,8 +192,9 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                 notify_info->notify.value = (u16) notify_value;
                 notify_info->notify.handler_obj = handler_obj;
 
-                status = acpi_os_execute(OSL_NOTIFY_HANDLER,
-                                         acpi_ev_notify_dispatch, notify_info);
+                status =
+                    acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_notify_dispatch,
+                                    notify_info);
                 if (ACPI_FAILURE(status)) {
                         acpi_ut_delete_generic_state(notify_info);
                 }
@@ -345,8 +347,9 @@ static u32 acpi_ev_global_lock_handler(void *context)
 
                 /* Run the Global Lock thread which will signal all waiting threads */
 
-                status = acpi_os_execute(OSL_GLOBAL_LOCK_HANDLER,
-                                         acpi_ev_global_lock_thread, context);
+                status =
+                    acpi_os_execute(OSL_GLOBAL_LOCK_HANDLER,
+                                    acpi_ev_global_lock_thread, context);
                 if (ACPI_FAILURE(status)) {
                         ACPI_EXCEPTION((AE_INFO, status,
                                         "Could not queue Global Lock thread"));
@@ -462,8 +465,9 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
          * Acquire the global lock semaphore first.
          * Since this wait will block, we must release the interpreter
          */
-        status = acpi_ex_system_wait_semaphore(acpi_gbl_global_lock_semaphore,
-                                               timeout);
+        status =
+            acpi_ex_system_wait_semaphore(acpi_gbl_global_lock_semaphore,
+                                          timeout);
         return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/events/evregion.c b/drivers/acpi/events/evregion.c
index edf9d2e1dff9..094a17e4c86d 100644
--- a/drivers/acpi/events/evregion.c
+++ b/drivers/acpi/events/evregion.c
@@ -193,8 +193,8 @@ acpi_status acpi_ev_initialize_op_regions(void)
 acpi_status
 acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)
 {
-        struct acpi_parameter_info info;
-        union acpi_operand_object *params[3];
+        struct acpi_evaluate_info *info;
+        union acpi_operand_object *args[3];
         union acpi_operand_object *region_obj2;
         acpi_status status;
 
@@ -209,47 +209,60 @@ acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)
                 return_ACPI_STATUS(AE_OK);
         }
 
+        /* Allocate and initialize the evaluation information block */
+
+        info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+        if (!info) {
+                return_ACPI_STATUS(AE_NO_MEMORY);
+        }
+
+        info->prefix_node = region_obj2->extra.method_REG;
+        info->pathname = NULL;
+        info->parameters = args;
+        info->parameter_type = ACPI_PARAM_ARGS;
+        info->flags = ACPI_IGNORE_RETURN_VALUE;
+
         /*
          * The _REG method has two arguments:
          *
-         * Arg0, Integer: Operation region space ID
-         *          Same value as region_obj->Region.space_id
-         * Arg1, Integer: connection status
-         *          1 for connecting the handler,
-         *          0 for disconnecting the handler
-         *          Passed as a parameter
+         * Arg0 - Integer:
+         *  Operation region space ID Same value as region_obj->Region.space_id
+         *
+         * Arg1 - Integer:
+         *  connection status 1 for connecting the handler, 0 for disconnecting
+         *  the handler (Passed as a parameter)
          */
-        params[0] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
-        if (!params[0]) {
-                return_ACPI_STATUS(AE_NO_MEMORY);
+        args[0] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
+        if (!args[0]) {
+                status = AE_NO_MEMORY;
+                goto cleanup1;
         }
 
-        params[1] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
-        if (!params[1]) {
+        args[1] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
+        if (!args[1]) {
                 status = AE_NO_MEMORY;
-                goto cleanup;
+                goto cleanup2;
         }
 
         /* Setup the parameter objects */
 
-        params[0]->integer.value = region_obj->region.space_id;
-        params[1]->integer.value = function;
-        params[2] = NULL;
-
-        info.node = region_obj2->extra.method_REG;
-        info.parameters = params;
-        info.parameter_type = ACPI_PARAM_ARGS;
+        args[0]->integer.value = region_obj->region.space_id;
+        args[1]->integer.value = function;
+        args[2] = NULL;
 
         /* Execute the method, no return value */
 
         ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
-                        (ACPI_TYPE_METHOD, info.node, NULL));
-        status = acpi_ns_evaluate_by_handle(&info);
+                        (ACPI_TYPE_METHOD, info->prefix_node, NULL));
+
+        status = acpi_ns_evaluate(info);
+        acpi_ut_remove_reference(args[1]);
 
-        acpi_ut_remove_reference(params[1]);
+      cleanup2:
+        acpi_ut_remove_reference(args[0]);
 
-      cleanup:
-        acpi_ut_remove_reference(params[0]);
+      cleanup1:
+        ACPI_FREE(info);
         return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index 1cecd577b899..5b3c7a85eb9a 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -475,8 +475,9 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
 
         /* Find any "_REG" method associated with this region definition */
 
-        status = acpi_ns_search_node(*reg_name_ptr, node,
-                                     ACPI_TYPE_METHOD, &method_node);
+        status =
+            acpi_ns_search_one_scope(*reg_name_ptr, node, ACPI_TYPE_METHOD,
+                                     &method_node);
         if (ACPI_SUCCESS(status)) {
                 /*
                  * The _REG method is optional and there can be only one per region