From 463c9a9f7d1f746c251761cef3af5c808394b7e1 Mon Sep 17 00:00:00 2001
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Thu, 2 Aug 2007 13:45:49 -0400
Subject: [x86 setup] EDD: add missing =m constraint

Add a missing =m constraint to the EDD-probing code, that could have
caused improper dead-code elimination.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---
 arch/i386/boot/edd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch')

diff --git a/arch/i386/boot/edd.c b/arch/i386/boot/edd.c
index 77d92daf792..658834d9f92 100644
--- a/arch/i386/boot/edd.c
+++ b/arch/i386/boot/edd.c
@@ -127,7 +127,7 @@ static int get_edd_info(u8 devno, struct edd_info *ei)
 	ax = 0x4800;
 	dx = devno;
 	asm("pushfl; int $0x13; popfl"
-	    : "+a" (ax), "+d" (dx)
+	    : "+a" (ax), "+d" (dx), "=m" (ei->params)
 	    : "S" (&ei->params)
 	    : "ebx", "ecx", "edi");
 
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