aboutsummaryrefslogtreecommitdiff
path: root/drivers/acpi/namespace
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/namespace')
-rw-r--r--drivers/acpi/namespace/nsaccess.c7
-rw-r--r--drivers/acpi/namespace/nsalloc.c8
-rw-r--r--drivers/acpi/namespace/nsdump.c4
-rw-r--r--drivers/acpi/namespace/nseval.c1
-rw-r--r--drivers/acpi/namespace/nsinit.c5
-rw-r--r--drivers/acpi/namespace/nsload.c3
-rw-r--r--drivers/acpi/namespace/nsobject.c3
-rw-r--r--drivers/acpi/namespace/nssearch.c3
-rw-r--r--drivers/acpi/namespace/nsutils.c6
-rw-r--r--drivers/acpi/namespace/nswalk.c4
-rw-r--r--drivers/acpi/namespace/nsxfeval.c46
-rw-r--r--drivers/acpi/namespace/nsxfname.c1
-rw-r--r--drivers/acpi/namespace/nsxfobj.c1
13 files changed, 71 insertions, 21 deletions
diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/namespace/nsaccess.c
index 1149bc18fb3..6bdad8bfcf0 100644
--- a/drivers/acpi/namespace/nsaccess.c
+++ b/drivers/acpi/namespace/nsaccess.c
@@ -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")
@@ -365,6 +366,7 @@ 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 +391,7 @@ 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 +419,7 @@ 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 +434,7 @@ 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 +574,7 @@ 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,
@@ -602,6 +608,7 @@ 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,
diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/namespace/nsalloc.c
index 9b871f38b61..cd26cb971a1 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/namespace/nsalloc.c
@@ -115,6 +115,7 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
}
if (prev_node) {
+
/* Node is not first child, unlink it */
prev_node->peer = next_node->peer;
@@ -125,6 +126,7 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
/* 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;
@@ -264,6 +266,7 @@ void acpi_ns_delete_children(struct acpi_namespace_node *parent_node)
* Deallocate all children at this level
*/
do {
+
/* Get the things we need */
next_node = child_node->peer;
@@ -352,11 +355,13 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
* to where we started.
*/
while (level > 0) {
+
/* Get the next node in this scope (NULL if none) */
child_node = acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
child_node);
if (child_node) {
+
/* Found a child node - detach any attached object */
acpi_ns_detach_object(child_node);
@@ -427,6 +432,7 @@ static void acpi_ns_remove_reference(struct acpi_namespace_node *node)
*/
this_node = node;
while (this_node) {
+
/* Prepare to move up to parent */
parent_node = acpi_ns_get_parent_node(this_node);
@@ -438,6 +444,7 @@ static void acpi_ns_remove_reference(struct acpi_namespace_node *node)
/* Delete the node if no more references */
if (!this_node->reference_count) {
+
/* Delete all children and delete the node */
acpi_ns_delete_children(this_node);
@@ -500,6 +507,7 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
if (child_node) {
if (child_node->owner_id == owner_id) {
+
/* Found a matching child node - detach any attached object */
acpi_ns_detach_object(child_node);
diff --git a/drivers/acpi/namespace/nsdump.c b/drivers/acpi/namespace/nsdump.c
index a2807317a84..e275373b170 100644
--- a/drivers/acpi/namespace/nsdump.c
+++ b/drivers/acpi/namespace/nsdump.c
@@ -191,6 +191,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
}
if (!(info->display_type & ACPI_DISPLAY_SHORT)) {
+
/* Indent the object according to the level */
acpi_os_printf("%2d%*s", (u32) level - 1, (int)level * 2, " ");
@@ -226,6 +227,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
case ACPI_DISPLAY_SUMMARY:
if (!obj_desc) {
+
/* No attached object, we are done */
acpi_os_printf("\n");
@@ -419,6 +421,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
acpi_os_printf("O:%p", obj_desc);
if (!obj_desc) {
+
/* No attached object, we are done */
acpi_os_printf("\n");
@@ -682,6 +685,7 @@ void acpi_ns_dump_tables(acpi_handle search_base, u32 max_depth)
}
if (ACPI_NS_ALL == search_base) {
+
/* Entire namespace */
search_handle = acpi_gbl_root_node;
diff --git a/drivers/acpi/namespace/nseval.c b/drivers/acpi/namespace/nseval.c
index 19d7b94d40c..80ef9554563 100644
--- a/drivers/acpi/namespace/nseval.c
+++ b/drivers/acpi/namespace/nseval.c
@@ -326,6 +326,7 @@ acpi_status acpi_ns_evaluate_by_handle(struct acpi_parameter_info *info)
* Check if there is a return value on the stack that must be dealt with
*/
if (status == AE_CTRL_RETURN_VALUE) {
+
/* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
status = AE_OK;
diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
index 9f929e479fd..9aa337c3388 100644
--- a/drivers/acpi/namespace/nsinit.c
+++ b/drivers/acpi/namespace/nsinit.c
@@ -366,6 +366,7 @@ acpi_ns_init_one_device(acpi_handle obj_handle,
status = acpi_ns_search_node(*ACPI_CAST_PTR(u32, METHOD_NAME__INI),
device_node, ACPI_TYPE_METHOD, &ini_node);
if (ACPI_FAILURE(status)) {
+
/* No _INI method found - move on to next device */
return_ACPI_STATUS(AE_OK);
@@ -386,6 +387,7 @@ acpi_ns_init_one_device(acpi_handle obj_handle,
status = acpi_ut_execute_STA(pinfo.node, &flags);
if (ACPI_FAILURE(status)) {
+
/* Ignore error and move on to next device */
return_ACPI_STATUS(AE_OK);
@@ -396,6 +398,7 @@ acpi_ns_init_one_device(acpi_handle obj_handle,
}
if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
+
/* Don't look at children of a not present device */
return_ACPI_STATUS(AE_CTRL_DEPTH);
@@ -412,6 +415,7 @@ acpi_ns_init_one_device(acpi_handle obj_handle,
pinfo.node = ini_node;
status = acpi_ns_evaluate_by_handle(&pinfo);
if (ACPI_FAILURE(status)) {
+
/* Ignore error and move on to next device */
#ifdef ACPI_DEBUG_OUTPUT
@@ -435,6 +439,7 @@ acpi_ns_init_one_device(acpi_handle obj_handle,
}
if (acpi_gbl_init_handler) {
+
/* External initialization handler is present, call it */
status =
diff --git a/drivers/acpi/namespace/nsload.c b/drivers/acpi/namespace/nsload.c
index 4e0b0524c18..80acfd35f3e 100644
--- a/drivers/acpi/namespace/nsload.c
+++ b/drivers/acpi/namespace/nsload.c
@@ -84,6 +84,7 @@ acpi_ns_load_table(struct acpi_table_desc *table_desc,
if (!
(acpi_gbl_table_data[table_desc->type].
flags & ACPI_TABLE_EXECUTABLE)) {
+
/* Just ignore this table */
return_ACPI_STATUS(AE_OK);
@@ -325,6 +326,7 @@ static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
* to where we started.
*/
while (level > 0) {
+
/* Attempt to get the next object in this scope */
status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle,
@@ -335,6 +337,7 @@ static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
/* Did we get a new object? */
if (ACPI_SUCCESS(status)) {
+
/* Check if this object has any children */
if (ACPI_SUCCESS
diff --git a/drivers/acpi/namespace/nsobject.c b/drivers/acpi/namespace/nsobject.c
index 10ae6292bca..39dc87b228f 100644
--- a/drivers/acpi/namespace/nsobject.c
+++ b/drivers/acpi/namespace/nsobject.c
@@ -82,6 +82,7 @@ acpi_ns_attach_object(struct acpi_namespace_node *node,
* Parameter validation
*/
if (!node) {
+
/* Invalid handle */
ACPI_ERROR((AE_INFO, "Null named_obj handle"));
@@ -89,6 +90,7 @@ acpi_ns_attach_object(struct acpi_namespace_node *node,
}
if (!object && (ACPI_TYPE_ANY != type)) {
+
/* Null object */
ACPI_ERROR((AE_INFO,
@@ -97,6 +99,7 @@ acpi_ns_attach_object(struct acpi_namespace_node *node,
}
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
+
/* Not a name handle */
ACPI_ERROR((AE_INFO, "Invalid handle %p [%s]",
diff --git a/drivers/acpi/namespace/nssearch.c b/drivers/acpi/namespace/nssearch.c
index d64b78952f2..f73a3d56616 100644
--- a/drivers/acpi/namespace/nssearch.c
+++ b/drivers/acpi/namespace/nssearch.c
@@ -114,9 +114,11 @@ acpi_ns_search_node(u32 target_name,
*/
next_node = node->child;
while (next_node) {
+
/* Check for match against the name */
if (next_node->name.integer == target_name) {
+
/* Resolve a control method alias if any */
if (acpi_ns_get_type(next_node) ==
@@ -146,6 +148,7 @@ acpi_ns_search_node(u32 target_name,
* so a flag is used to indicate the end-of-list
*/
if (next_node->flags & ANOBJ_END_OF_PEER_LIST) {
+
/* Searched entire list, we are done */
break;
diff --git a/drivers/acpi/namespace/nsutils.c b/drivers/acpi/namespace/nsutils.c
index 3e7cad549a3..e8c779114be 100644
--- a/drivers/acpi/namespace/nsutils.c
+++ b/drivers/acpi/namespace/nsutils.c
@@ -83,6 +83,7 @@ acpi_ns_report_error(char *module_name,
acpi_ut_report_error(module_name, line_number);
if (lookup_status == AE_BAD_CHARACTER) {
+
/* There is a non-ascii character in the name */
acpi_os_printf("[0x%4.4X] (NON-ASCII)",
@@ -267,6 +268,7 @@ u32 acpi_ns_local(acpi_object_type type)
ACPI_FUNCTION_TRACE("ns_local");
if (!acpi_ut_valid_object_type(type)) {
+
/* Type code out of range */
ACPI_WARNING((AE_INFO, "Invalid Object Type %X", type));
@@ -411,6 +413,7 @@ acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
for (i = 0; i < ACPI_NAME_SIZE; i++) {
if (acpi_ns_valid_path_separator(*external_name) ||
(*external_name == 0)) {
+
/* Pad the segment with underscore(s) if segment is short */
result[i] = '_';
@@ -795,6 +798,7 @@ u32 acpi_ns_opens_scope(acpi_object_type type)
ACPI_FUNCTION_TRACE_STR("ns_opens_scope", acpi_ut_get_type_name(type));
if (!acpi_ut_valid_object_type(type)) {
+
/* type code out of range */
ACPI_WARNING((AE_INFO, "Invalid Object Type %X", type));
@@ -838,6 +842,7 @@ acpi_ns_get_node_by_path(char *pathname,
ACPI_FUNCTION_TRACE_PTR("ns_get_node_by_path", pathname);
if (pathname) {
+
/* Convert path to internal representation */
status = acpi_ns_internalize_name(pathname, &internal_path);
@@ -963,6 +968,7 @@ acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node * child_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);
diff --git a/drivers/acpi/namespace/nswalk.c b/drivers/acpi/namespace/nswalk.c
index fcab1e784b8..6bbc734bfee 100644
--- a/drivers/acpi/namespace/nswalk.c
+++ b/drivers/acpi/namespace/nswalk.c
@@ -76,6 +76,7 @@ struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
ACPI_FUNCTION_ENTRY();
if (!child_node) {
+
/* It's really the parent's _scope_ that we want */
if (parent_node->child) {
@@ -92,6 +93,7 @@ struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
/* If any type is OK, we are done */
if (type == ACPI_TYPE_ANY) {
+
/* next_node is NULL if we are at the end-of-list */
return (next_node);
@@ -100,6 +102,7 @@ struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
/* Must search for the node -- but within this scope only */
while (next_node) {
+
/* If type matches, we are done */
if (next_node->type == type) {
@@ -182,6 +185,7 @@ acpi_ns_walk_namespace(acpi_object_type type,
* bubbled up to (and passed) the original parent handle (start_entry)
*/
while (level > 0) {
+
/* Get the next node in this scope. Null if not found */
status = AE_OK;
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index a95f636dc35..71e7769d7da 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -110,6 +110,7 @@ acpi_evaluate_object_typed(acpi_handle handle,
}
if (return_buffer->length == 0) {
+
/* Error because caller specifically asked for a return value */
ACPI_ERROR((AE_INFO, "No return value"));
@@ -131,6 +132,7 @@ acpi_evaluate_object_typed(acpi_handle handle,
acpi_ut_get_type_name(return_type)));
if (must_free) {
+
/* Caller used ACPI_ALLOCATE_BUFFER, free the return buffer */
acpi_os_free(return_buffer->pointer);
@@ -224,9 +226,9 @@ acpi_evaluate_object(acpi_handle handle,
* 3) Valid handle
*/
if ((pathname) && (acpi_ns_valid_root_prefix(pathname[0]))) {
- /*
- * The path is fully qualified, just evaluate by name
- */
+
+ /* The path is fully qualified, just evaluate by name */
+
status = acpi_ns_evaluate_by_name(pathname, &info);
} else if (!handle) {
/*
@@ -235,11 +237,12 @@ acpi_evaluate_object(acpi_handle handle,
* qualified names above, this is an error
*/
if (!pathname) {
- ACPI_ERROR((AE_INFO,
- "Both Handle and Pathname are NULL"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Both Handle and Pathname are NULL"));
} else {
- ACPI_ERROR((AE_INFO,
- "Handle is NULL and Pathname is relative"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Null Handle with relative pathname [%s]",
+ pathname));
}
status = AE_BAD_PARAMETER;
@@ -256,9 +259,8 @@ acpi_evaluate_object(acpi_handle handle,
*/
status = acpi_ns_evaluate_by_handle(&info);
} else {
- /*
- * Both a Handle and a relative Pathname
- */
+ /* Both a Handle and a relative Pathname */
+
status = acpi_ns_evaluate_relative(pathname, &info);
}
}
@@ -295,6 +297,7 @@ acpi_evaluate_object(acpi_handle handle,
acpi_ut_get_object_size(info.return_object,
&buffer_space_needed);
if (ACPI_SUCCESS(status)) {
+
/* Validate/Allocate/Clear caller buffer */
status =
@@ -303,7 +306,8 @@ acpi_evaluate_object(acpi_handle handle,
buffer_space_needed);
if (ACPI_FAILURE(status)) {
/*
- * Caller's buffer is too small or a new one can't be allocated
+ * Caller's buffer is too small or a new one can't
+ * be allocated
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Needed buffer size %X, %s\n",
@@ -312,9 +316,8 @@ acpi_evaluate_object(acpi_handle handle,
acpi_format_exception
(status)));
} else {
- /*
- * We have enough space for the object, build it
- */
+ /* We have enough space for the object, build it */
+
status =
acpi_ut_copy_iobject_to_eobject
(info.return_object,
@@ -341,10 +344,10 @@ acpi_evaluate_object(acpi_handle handle,
}
}
- /*
- * Free the input parameter list (if we created one),
- */
+ /* Free the input parameter list (if we created one) */
+
if (info.parameters) {
+
/* Free the allocated parameter block */
acpi_ut_delete_internal_object_list(info.parameters);
@@ -473,6 +476,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
}
if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
+
/* Don't examine children of the device if not present */
return (AE_CTRL_DEPTH);
@@ -489,6 +493,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
}
if (ACPI_STRNCMP(hid.value, info->hid, sizeof(hid.value)) != 0) {
+
/* Get the list of Compatible IDs */
status = acpi_ut_execute_CID(node, &cid);
@@ -563,9 +568,9 @@ acpi_get_devices(char *HID,
* We're going to call their callback from OUR callback, so we need
* to know what it is, and their context parameter.
*/
+ info.hid = HID;
info.context = context;
info.user_function = user_function;
- info.hid = HID;
/*
* Lock the namespace around the walk.
@@ -578,9 +583,8 @@ acpi_get_devices(char *HID,
return_ACPI_STATUS(status);
}
- status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE,
- ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
- ACPI_NS_WALK_UNLOCK,
+ status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
acpi_ns_get_device_callback, &info,
return_value);
diff --git a/drivers/acpi/namespace/nsxfname.c b/drivers/acpi/namespace/nsxfname.c
index 8cd8675a47c..55d26624ab9 100644
--- a/drivers/acpi/namespace/nsxfname.c
+++ b/drivers/acpi/namespace/nsxfname.c
@@ -162,6 +162,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
}
if (name_type == ACPI_FULL_PATHNAME) {
+
/* Get the full pathname (From the namespace root) */
status = acpi_ns_handle_to_pathname(handle, buffer);
diff --git a/drivers/acpi/namespace/nsxfobj.c b/drivers/acpi/namespace/nsxfobj.c
index a0332595677..9c5f3302799 100644
--- a/drivers/acpi/namespace/nsxfobj.c
+++ b/drivers/acpi/namespace/nsxfobj.c
@@ -206,6 +206,7 @@ acpi_get_next_object(acpi_object_type type,
/* If null handle, use the parent */
if (!child) {
+
/* Start search at the beginning of the specified scope */
parent_node = acpi_ns_map_handle_to_node(parent);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-11 10:50:25 +0000