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authorBob Moore <robert.moore@intel.com>2013-11-21 12:20:06 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-11-21 13:47:04 +0100
commit3f69fe153133f781d546f0c53f7dd3889275c90d (patch)
treef2250c42949b7202f27615b64c5660ce410f26db /drivers/acpi
parent794ba09bf30054c81832e61b49a64a56c95c5a9f (diff)
downloadlinux-3f69fe153133f781d546f0c53f7dd3889275c90d.tar.bz2
ACPICA: Add support to delete all objects attached to the root namespace node.
This fix deletes any and all objects that have been attached to the root node (via acpi_attach_data). Reported by Tomasz Nowicki. ACPICA BZ 1026. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/acpica/nsalloc.c6
-rw-r--r--drivers/acpi/acpica/nsutils.c18
2 files changed, 16 insertions, 8 deletions
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index bc3f598257a2..fd1ff54cda19 100644
--- a/drivers/acpi/acpica/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -134,6 +134,12 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
obj_desc = next_desc;
}
+ /* Special case for the statically allocated root node */
+
+ if (node == acpi_gbl_root_node) {
+ return;
+ }
+
/* Now we can delete the node */
(void)acpi_os_release_object(acpi_gbl_namespace_cache, node);
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index cc2fea94c5f0..4a0665b6bcc1 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -593,24 +593,26 @@ struct acpi_namespace_node *acpi_ns_validate_handle(acpi_handle handle)
void acpi_ns_terminate(void)
{
- union acpi_operand_object *obj_desc;
+ acpi_status status;
ACPI_FUNCTION_TRACE(ns_terminate);
/*
- * 1) Free the entire namespace -- all nodes and objects
- *
- * Delete all object descriptors attached to namepsace nodes
+ * Free the entire namespace -- all nodes and all objects
+ * attached to the nodes
*/
acpi_ns_delete_namespace_subtree(acpi_gbl_root_node);
- /* Detach any objects attached to the root */
+ /* Delete any objects attached to the root node */
- obj_desc = acpi_ns_get_attached_object(acpi_gbl_root_node);
- if (obj_desc) {
- acpi_ns_detach_object(acpi_gbl_root_node);
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return_VOID;
}
+ acpi_ns_delete_node(acpi_gbl_root_node);
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace freed\n"));
return_VOID;
}