From b7eba30c28d81cb5f332dc112ad1e2857c36b304 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Fri, 2 Dec 1994 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1994-12-02

---
 pc/dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pc/dma.c b/pc/dma.c
index 9fbbd4608845aa14b6a6c17463159cfae303aa55..0f720b10360d92794eea258fed070bd8be0c74fb 100644
--- a/pc/dma.c
+++ b/pc/dma.c
@@ -182,7 +182,7 @@ dmaend(int chan)
 	unlock(dp);
 
 	xp = &dp->x[chan];
-	if(xp->len == 0)
+	if(xp->len == 0 || xp->isread)
 		return;
 
 	/*