From abb300d07d90b880852af20d57ba273a25628e4d Mon Sep 17 00:00:00 2001
From: Bill Nottingham <notting@redhat.com>
Date: Thu, 28 Mar 2002 19:49:45 +0000
Subject: turrn off DMA on all CDs at boot <mingo@redhat.com>

---
 rc.d/rc.sysinit | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/rc.d/rc.sysinit b/rc.d/rc.sysinit
index 0555ae88..658c218d 100755
--- a/rc.d/rc.sysinit
+++ b/rc.d/rc.sysinit
@@ -351,6 +351,17 @@ mount -f /proc
 [ -f /proc/bus/usb/devices ] && mount -f -t usbdevfs usbdevfs /proc/bus/usb
 [ -e /dev/.devfsd ] && mount -f -t devfs devfs /dev 
 
+# Turn off DMA on CD-ROMs. It more often than not causes problems.
+if [ -e /proc/ide ]; then
+ DRIVERS=`find /proc/ide/ -name driver`
+ if [ "$DRIVERS" != "" ]; then
+  for N in `grep -v ide-disk $DRIVERS | cut -d/ -f5` ; do
+   hdparm -d0 /dev/$N
+  done
+ fi
+fi
+
+
 # Turn on harddisk optimization
 # There is only one file /etc/sysconfig/harddisks for all disks
 # after installing the hdparm-RPM. If you need different hdparm parameters
-- 
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