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-rw-r--r--drivers/acpi/namespace/nsxfobj.c44
-rw-r--r--drivers/acpi/tables/tbxface.c54
-rw-r--r--include/acpi/acpixf.h7
3 files changed, 102 insertions, 3 deletions
diff --git a/drivers/acpi/namespace/nsxfobj.c b/drivers/acpi/namespace/nsxfobj.c
index a163e1d3708..a18b1c22312 100644
--- a/drivers/acpi/namespace/nsxfobj.c
+++ b/drivers/acpi/namespace/nsxfobj.c
@@ -50,6 +50,50 @@ ACPI_MODULE_NAME("nsxfobj")
/*******************************************************************************
*
+ * FUNCTION: acpi_get_id
+ *
+ * PARAMETERS: Handle - Handle of object whose id is desired
+ * ret_id - Where the id will be placed
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This routine returns the owner id associated with a handle
+ *
+ ******************************************************************************/
+acpi_status acpi_get_id(acpi_handle handle, acpi_owner_id * ret_id)
+{
+ struct acpi_namespace_node *node;
+ acpi_status status;
+
+ /* Parameter Validation */
+
+ if (!ret_id) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Convert and validate the handle */
+
+ node = acpi_ns_map_handle_to_node(handle);
+ if (!node) {
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return (AE_BAD_PARAMETER);
+ }
+
+ *ret_id = node->owner_id;
+
+ status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return (status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_get_id)
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_get_type
*
* PARAMETERS: Handle - Handle of object whose type is desired
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 7767987be15..5ba9303293a 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -123,7 +123,6 @@ acpi_status acpi_load_tables(void)
ACPI_EXPORT_SYMBOL(acpi_load_tables)
-#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_load_table
@@ -221,6 +220,59 @@ ACPI_EXPORT_SYMBOL(acpi_load_table)
/*******************************************************************************
*
+ * FUNCTION: acpi_unload_table_id
+ *
+ * PARAMETERS: table_type - Type of table to be unloaded
+ * id - Owner ID of the table to be removed.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This routine is used to force the unload of a table (by id)
+ *
+ ******************************************************************************/
+acpi_status acpi_unload_table_id(acpi_table_type table_type, acpi_owner_id id)
+{
+ struct acpi_table_desc *table_desc;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(acpi_unload_table);
+
+ /* Parameter validation */
+ if (table_type > ACPI_TABLE_ID_MAX)
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+
+ /* Find table from the requested type list */
+ table_desc = acpi_gbl_table_lists[table_type].next;
+ while (table_desc && table_desc->owner_id != id)
+ table_desc = table_desc->next;
+
+ if (!table_desc)
+ return_ACPI_STATUS(AE_NOT_EXIST);
+
+ /*
+ * Delete all namespace objects owned by this table. Note that these
+ * objects can appear anywhere in the namespace by virtue of the AML
+ * "Scope" operator. Thus, we need to track ownership by an ID, not
+ * simply a position within the hierarchy
+ */
+ acpi_ns_delete_namespace_by_owner(table_desc->owner_id);
+
+ status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+ if (ACPI_FAILURE(status))
+ return_ACPI_STATUS(status);
+
+ (void)acpi_tb_uninstall_table(table_desc);
+
+ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+
+ return_ACPI_STATUS(AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
+
+#ifdef ACPI_FUTURE_USAGE
+/*******************************************************************************
+ *
* FUNCTION: acpi_unload_table
*
* PARAMETERS: table_type - Type of table to be unloaded
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 049e9aa1b86..81458767a90 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -97,11 +97,12 @@ acpi_find_root_pointer(u32 flags, struct acpi_pointer *rsdp_address);
acpi_status acpi_load_tables(void);
-#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_load_table(struct acpi_table_header *table_ptr);
-acpi_status acpi_unload_table(acpi_table_type table_type);
+acpi_status acpi_unload_table_id(acpi_table_type table_type, acpi_owner_id id);
+#ifdef ACPI_FUTURE_USAGE
+acpi_status acpi_unload_table(acpi_table_type table_type);
acpi_status
acpi_get_table_header(acpi_table_type table_type,
u32 instance, struct acpi_table_header *out_table_header);
@@ -180,6 +181,8 @@ acpi_get_next_object(acpi_object_type type,
acpi_status acpi_get_type(acpi_handle object, acpi_object_type * out_type);
+acpi_status acpi_get_id(acpi_handle object, acpi_owner_id * out_type);
+
acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle);
/*