diff options
Diffstat (limited to 'drivers/acpi/acpica/nswalk.c')
| -rw-r--r-- | drivers/acpi/acpica/nswalk.c | 65 |
1 files changed, 28 insertions, 37 deletions
diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c index d7e6b52b448..4758a1f2ce2 100644 --- a/drivers/acpi/acpica/nswalk.c +++ b/drivers/acpi/acpica/nswalk.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2008, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -60,8 +60,8 @@ ACPI_MODULE_NAME("nswalk") * RETURN: struct acpi_namespace_node - Pointer to the NEXT child or NULL if * none is found. * - * DESCRIPTION: Return the next peer node within the namespace. If Handle - * is valid, Scope is ignored. Otherwise, the first node + * DESCRIPTION: Return the next peer node within the namespace. If Handle + * is valid, Scope is ignored. Otherwise, the first node * within Scope is returned. * ******************************************************************************/ @@ -76,28 +76,19 @@ struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node /* It's really the parent's _scope_ that we want */ - 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; + return (parent_node->child); } /* Otherwise just return the next peer */ - return child_node->peer; + return (child_node->peer); } /******************************************************************************* * * FUNCTION: acpi_ns_get_next_node_typed * - * PARAMETERS: Type - Type of node to be searched for + * PARAMETERS: type - Type of node to be searched for * parent_node - Parent node whose children we are * getting * child_node - Previous child that was found. @@ -106,8 +97,8 @@ struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node * RETURN: struct acpi_namespace_node - Pointer to the NEXT child or NULL if * none is found. * - * DESCRIPTION: Return the next peer node within the namespace. If Handle - * is valid, Scope is ignored. Otherwise, the first node + * DESCRIPTION: Return the next peer node within the namespace. If Handle + * is valid, Scope is ignored. Otherwise, the first node * within Scope is returned. * ******************************************************************************/ @@ -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 */ @@ -160,16 +151,16 @@ struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type, * * FUNCTION: acpi_ns_walk_namespace * - * PARAMETERS: Type - acpi_object_type to search for + * PARAMETERS: type - acpi_object_type to search for * start_node - Handle in namespace where search begins * max_depth - Depth to which search is to reach - * Flags - Whether to unlock the NS before invoking + * flags - Whether to unlock the NS before invoking * the callback routine - * pre_order_visit - Called during tree pre-order visit + * descending_callback - Called during tree descent * when an object of "Type" is found - * post_order_visit - Called during tree post-order visit + * ascending_callback - Called during tree ascent * when an object of "Type" is found - * Context - Passed to user function(s) above + * context - Passed to user function(s) above * return_value - from the user_function if terminated * early. Otherwise, returns NULL. * RETURNS: Status @@ -194,8 +185,8 @@ acpi_ns_walk_namespace(acpi_object_type type, acpi_handle start_node, u32 max_depth, u32 flags, - acpi_walk_callback pre_order_visit, - acpi_walk_callback post_order_visit, + acpi_walk_callback descending_callback, + acpi_walk_callback ascending_callback, void *context, void **return_value) { acpi_status status; @@ -264,22 +255,22 @@ acpi_ns_walk_namespace(acpi_object_type type, } /* - * Invoke the user function, either pre-order or post-order + * Invoke the user function, either descending, ascending, * or both. */ if (!node_previously_visited) { - if (pre_order_visit) { + if (descending_callback) { status = - pre_order_visit(child_node, level, - context, - return_value); + descending_callback(child_node, + level, context, + return_value); } } else { - if (post_order_visit) { + if (ascending_callback) { status = - post_order_visit(child_node, level, - context, - return_value); + ascending_callback(child_node, + level, context, + return_value); } } @@ -314,7 +305,7 @@ acpi_ns_walk_namespace(acpi_object_type type, /* * Depth first search: Attempt to go down another level in the - * namespace if we are allowed to. Don't go any further if we have + * namespace if we are allowed to. Don't go any further if we have * reached the caller specified maximum depth or if the user * function has specified that the maximum depth has been reached. */ @@ -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; } |