diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt
index b152e81..c10c022 100644
--- a/Documentation/oops-tracing.txt
+++ b/Documentation/oops-tracing.txt
@@ -257,6 +257,8 @@
 
  10: 'W' if a warning has previously been issued by the kernel.
 
+ 11: 'C' if a staging driver has been loaded.
+
 The primary reason for the 'Tainted: ' string is to tell kernel
 debuggers if this is a clean kernel or if anything unusual has
 occurred.  Tainting is permanent: even if an offending module is