Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: ACPI_DOCK: Initialize the atomic notifier list
  ACPI: acpi_os_allocate() fixes
  ACPI: SBS: fix initialization, sem2mutex
  ACPI: add 'const' to several ACPI file_operations
  ACPI: delete some defaults from ACPI Kconfig
  ACPI: "Device `[%s]' is not power manageable" make message debug only
  ACPI: ACPI_DOCK Kconfig
  Revert "Revert "ACPI: dock driver""
  ACPI: acpi_os_get_thread_id() returns current
  ACPI: ACPICA 20060707

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/namespace/nsalloc.c
index dc3f0739a46b..55b407aae266 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/namespace/nsalloc.c
@@ -386,14 +386,17 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
  *              specific ID.  Used to delete entire ACPI tables.  All
  *              reference counts are updated.
  *
+ * MUTEX:       Locks namespace during deletion walk.
+ *
  ******************************************************************************/
 
 void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
 {
         struct acpi_namespace_node *child_node;
         struct acpi_namespace_node *deletion_node;
-        u32 level;
         struct acpi_namespace_node *parent_node;
+        u32 level;
+        acpi_status status;
 
         ACPI_FUNCTION_TRACE_U32(ns_delete_namespace_by_owner, owner_id);
 
@@ -401,6 +404,13 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
                 return_VOID;
         }
 
+        /* Lock namespace for possible update */
+
+        status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+        if (ACPI_FAILURE(status)) {
+                return_VOID;
+        }
+
         deletion_node = NULL;
         parent_node = acpi_gbl_root_node;
         child_node = NULL;
@@ -469,5 +479,6 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
                 }
         }
 
+        (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
         return_VOID;
 }