1 files changed, 27 insertions, 19 deletions

diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/namespace/nsaccess.c
index 1149bc18fb35..48fadade52e2 100644
--- a/drivers/acpi/namespace/nsaccess.c
+++ b/drivers/acpi/namespace/nsaccess.c
@@ -70,7 +70,7 @@ acpi_status acpi_ns_root_initialize(void)
         union acpi_operand_object *obj_desc;
         acpi_string val = NULL;
 
-        ACPI_FUNCTION_TRACE("ns_root_initialize");
+        ACPI_FUNCTION_TRACE(ns_root_initialize);
 
         status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
         if (ACPI_FAILURE(status)) {
@@ -98,6 +98,7 @@ acpi_status acpi_ns_root_initialize(void)
                           "Entering predefined entries into namespace\n"));
 
         for (init_val = acpi_gbl_pre_defined_names; init_val->name; init_val++) {
+
                 /* _OSI is optional for now, will be permanent later */
 
                 if (!ACPI_STRCMP(init_val->name, "_OSI")
@@ -156,7 +157,7 @@ acpi_status acpi_ns_root_initialize(void)
 
 #if defined (ACPI_ASL_COMPILER)
 
-                                /* save the parameter count for the i_aSL compiler */
+                                /* Save the parameter count for the i_aSL compiler */
 
                                 new_node->value = obj_desc->method.param_count;
 #else
@@ -258,10 +259,8 @@ acpi_status acpi_ns_root_initialize(void)
         /* Save a handle to "_GPE", it is always present */
 
         if (ACPI_SUCCESS(status)) {
-                status =
-                    acpi_ns_get_node_by_path("\\_GPE", NULL,
-                                             ACPI_NS_NO_UPSEARCH,
-                                             &acpi_gbl_fadt_gpe_device);
+                status = acpi_ns_get_node(NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
+                                          &acpi_gbl_fadt_gpe_device);
         }
 
         return_ACPI_STATUS(status);
@@ -310,17 +309,17 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
         acpi_object_type type_to_check_for;
         acpi_object_type this_search_type;
         u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
-        u32 local_flags = flags & ~(ACPI_NS_ERROR_IF_FOUND |
-                                    ACPI_NS_SEARCH_PARENT);
+        u32 local_flags;
 
-        ACPI_FUNCTION_TRACE("ns_lookup");
+        ACPI_FUNCTION_TRACE(ns_lookup);
 
         if (!return_node) {
                 return_ACPI_STATUS(AE_BAD_PARAMETER);
         }
 
-        acpi_gbl_ns_lookup_count++;
+        local_flags = flags & ~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_SEARCH_PARENT);
         *return_node = ACPI_ENTRY_NOT_FOUND;
+        acpi_gbl_ns_lookup_count++;
 
         if (!acpi_gbl_root_node) {
                 return_ACPI_STATUS(AE_NO_NAMESPACE);
@@ -346,14 +345,17 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                         return_ACPI_STATUS(AE_AML_INTERNAL);
                 }
 
-                /*
-                 * This node might not be a actual "scope" node (such as a
-                 * Device/Method, etc.)  It could be a Package or other object node.
-                 * Backup up the tree to find the containing scope node.
-                 */
-                while (!acpi_ns_opens_scope(prefix_node->type) &&
-                       prefix_node->type != ACPI_TYPE_ANY) {
-                        prefix_node = acpi_ns_get_parent_node(prefix_node);
+                if (!(flags & ACPI_NS_PREFIX_IS_SCOPE)) {
+                        /*
+                         * This node might not be a actual "scope" node (such as a
+                         * Device/Method, etc.)  It could be a Package or other object node.
+                         * Backup up the tree to find the containing scope node.
+                         */
+                        while (!acpi_ns_opens_scope(prefix_node->type) &&
+                               prefix_node->type != ACPI_TYPE_ANY) {
+                                prefix_node =
+                                    acpi_ns_get_parent_node(prefix_node);
+                        }
                 }
         }
 
@@ -365,6 +367,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
          * Begin examination of the actual pathname
          */
         if (!pathname) {
+
                 /* A Null name_path is allowed and refers to the root */
 
                 num_segments = 0;
@@ -389,6 +392,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                  * to the current scope).
                  */
                 if (*path == (u8) AML_ROOT_PREFIX) {
+
                         /* Pathname is fully qualified, start from the root */
 
                         this_node = acpi_gbl_root_node;
@@ -416,6 +420,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                         this_node = prefix_node;
                         num_carats = 0;
                         while (*path == (u8) AML_PARENT_PREFIX) {
+
                                 /* Name is fully qualified, no search rules apply */
 
                                 search_parent_flag = ACPI_NS_NO_UPSEARCH;
@@ -430,6 +435,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                                 num_carats++;
                                 this_node = acpi_ns_get_parent_node(this_node);
                                 if (!this_node) {
+
                                         /* Current scope has no parent scope */
 
                                         ACPI_ERROR((AE_INFO,
@@ -569,6 +575,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                                              &this_node);
                 if (ACPI_FAILURE(status)) {
                         if (status == AE_NOT_FOUND) {
+
                                 /* Name not found in ACPI namespace */
 
                                 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
@@ -602,10 +609,11 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                     (type_to_check_for != ACPI_TYPE_LOCAL_SCOPE) &&
                     (this_node->type != ACPI_TYPE_ANY) &&
                     (this_node->type != type_to_check_for)) {
+
                         /* Complain about a type mismatch */
 
                         ACPI_WARNING((AE_INFO,
-                                      "ns_lookup: Type mismatch on %4.4s (%s), searching for (%s)",
+                                      "NsLookup: Type mismatch on %4.4s (%s), searching for (%s)",
                                       ACPI_CAST_PTR(char, &simple_name),
                                       acpi_ut_get_type_name(this_node->type),
                                       acpi_ut_get_type_name