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path: root/drivers/acpi/acpica/dbnames.c
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Diffstat (limited to 'drivers/acpi/acpica/dbnames.c')
-rw-r--r--drivers/acpi/acpica/dbnames.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/dbnames.c b/drivers/acpi/acpica/dbnames.c
index 170802c62179..dc94de91033e 100644
--- a/drivers/acpi/acpica/dbnames.c
+++ b/drivers/acpi/acpica/dbnames.c
@@ -189,9 +189,15 @@ void acpi_db_dump_namespace(char *start_arg, char *depth_arg)
}
acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
- acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
- ((struct acpi_namespace_node *)subtree_entry)->name.
- ascii, subtree_entry);
+
+ if (((struct acpi_namespace_node *)subtree_entry)->parent) {
+ acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
+ ((struct acpi_namespace_node *)subtree_entry)->
+ name.ascii, subtree_entry);
+ } else {
+ acpi_os_printf("ACPI Namespace (from %s):\n",
+ ACPI_NAMESPACE_ROOT);
+ }
/* Display the subtree */