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Diffstat (limited to 'drivers/acpi/acpica/nsnames.c')
-rw-r--r--drivers/acpi/acpica/nsnames.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index aa16aeaa8937..a410760a0308 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -89,7 +89,14 @@ acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node)
{
acpi_size size;
- ACPI_FUNCTION_ENTRY();
+ /* Validate the Node */
+
+ if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
+ ACPI_ERROR((AE_INFO,
+ "Invalid/cached reference target node: %p, descriptor type %d",
+ node, ACPI_GET_DESCRIPTOR_TYPE(node)));
+ return (0);
+ }
size = acpi_ns_build_normalized_path(node, NULL, 0, FALSE);
return (size);