From 4823f3c55dd474f565dc48c812c6de56aa791147 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Thu, 6 Jul 1995 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1995-07-06

---
 pc/ether509.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pc/ether509.c b/pc/ether509.c
index cd8e4509ff6c2c8e642aa20945537ecad701da39..34c66821c19cffb68d8e1c0fe102ecdd787e58a6 100644
--- a/pc/ether509.c
+++ b/pc/ether509.c
@@ -122,10 +122,11 @@ attach(Ether *ether)
 	 * The only interrupt we should see under normal conditions
 	 * is the receiver interrupt. If the transmit FIFO fills up,
 	 * we will also see TxAvailable interrupts.
+	 * Disable Update interrupts for now.
 	 */
 	COMMAND(port, SetRxFilter, Broadcast|MyEtherAddr);
-	COMMAND(port, SetReadZeroMask, AllIntr|Latch);
-	COMMAND(port, SetIntrMask, AllIntr|Latch);
+	COMMAND(port, SetReadZeroMask, (AllIntr|Latch) & ~Update);
+	COMMAND(port, SetIntrMask, (AllIntr|Latch) & ~Update);
 	COMMAND(port, RxEnable, 0);
 	COMMAND(port, TxEnable, 0);
 }