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-rw-r--r--drivers/acpi/acpica/acnamesp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index bbb3b4d1e796..9bd25f36c608 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -34,6 +34,7 @@
#define ACPI_NS_TEMPORARY 0x0040
#define ACPI_NS_OVERRIDE_IF_FOUND 0x0080
#define ACPI_NS_EARLY_INIT 0x0100
+#define ACPI_NS_PREFIX_MUST_EXIST 0x0200
/* Flags for acpi_ns_walk_namespace */