powerpc/tm: Update cause codes documentation

Signed-off-by: Michael Neuling <[email protected]>
Cc: <[email protected]> # 3.9 only
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
diff --git a/Documentation/powerpc/transactional_memory.txt b/Documentation/powerpc/transactional_memory.txt
index c907be4..84e04a0 100644
--- a/Documentation/powerpc/transactional_memory.txt
+++ b/Documentation/powerpc/transactional_memory.txt
@@ -155,6 +155,7 @@
 kernel aborted a transaction:
 
  TM_CAUSE_RESCHED       Thread was rescheduled.
+ TM_CAUSE_TLBI          Software TLB invalide.
  TM_CAUSE_FAC_UNAV      FP/VEC/VSX unavailable trap.
  TM_CAUSE_SYSCALL       Currently unused; future syscalls that must abort
                         transactions for consistency will use this.