From a31c30564ceceb6736ee68a2f3f1560d51777ca0 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@gmx.de>
Date: Sun, 16 Sep 2012 16:46:28 +0200
Subject: [PATCH] sdide: make sure bmiba is in i/o port space, not memory

---
 sys/src/9/pc/sdide.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/src/9/pc/sdide.c b/sys/src/9/pc/sdide.c
index 2b2918792..b9b237c57 100644
--- a/sys/src/9/pc/sdide.c
+++ b/sys/src/9/pc/sdide.c
@@ -2160,7 +2160,7 @@ atapnp(void)
 			ctlr->maxdma = maxdma;
 			ctlr->span = span;
 			ctlr->irqack = irqack;
-			if(pi & 0x80)
+			if((pi & 0x80) && (p->mem[4].bar & 0x01))
 				ctlr->bmiba = (p->mem[4].bar & ~0x01) + channel*8;
 			if(head != nil)
 				tail->next = sdev;