From 46c69c8968768cd039d040d9efe73fd3192d46be Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Thu, 20 Mar 2003 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 2003-03-20

---
 pc/sdata.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pc/sdata.c b/pc/sdata.c
index 2c3751ae1b982a108f8089472ba4077a37972a14..b412e27b248a2b652692a840dbf7ea65bf316cf8 100644
--- a/pc/sdata.c
+++ b/pc/sdata.c
@@ -1704,8 +1704,17 @@ atapnp(void)
 			break;
 		case (0x4D38<<16)|0x105A:	/* Promise PDC20262 */
 		case (0x4D30<<16)|0x105A:	/* Promise PDC202xx */
+			pi = 0x85;
+			break;
 		case (0x0004<<16)|0x1103:	/* HighPoint HPT-370 */
 			pi = 0x85;
+			/*
+			 * Turn off fast interrupt prediction.
+			 */
+			if((r = pcicfgr8(p, 0x51)) & 0x80)
+				pcicfgw8(p, 0x51, r & ~0x80);
+			if((r = pcicfgr8(p, 0x55)) & 0x80)
+				pcicfgw8(p, 0x55, r & ~0x80);
 			break;
 		case (0x0640<<16)|0x1095:	/* CMD 640B */
 			/*