From abfbadebb50513388c8da16a4bbe7dfc7b5c548e Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Sat, 3 Mar 2018 13:14:34 +0800
Subject: [PATCH] doc: DMA can also raise RTIOUnderflow

---
 artiq/coredevice/exceptions.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/artiq/coredevice/exceptions.py b/artiq/coredevice/exceptions.py
index de86baf25..440be95f3 100644
--- a/artiq/coredevice/exceptions.py
+++ b/artiq/coredevice/exceptions.py
@@ -71,8 +71,8 @@ class CacheError(Exception):
 
 
 class RTIOUnderflow(Exception):
-    """Raised when the CPU fails to submit a RTIO event early enough
-    (with respect to the event's timestamp).
+    """Raised when the CPU or DMA core fails to submit a RTIO event early
+    enough (with respect to the event's timestamp).
 
     The offending event is discarded and the RTIO core keeps operating.
     """