linux-kernel - [PATCH] [5/23] x86 boot: Set ax register in boot vga query

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Date:	Thu, 10 Jun 2010 13:10:40 +0200 (CEST)
From:	Andi Kleen <andi@...stfloor.org>
To:	hpa@...or.com, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] [5/23] x86 boot: Set ax register in boot vga query


I think the ax register should be input to the
BIOS call, not be unused, but not fully sure.  hpa?

Found by gcc 4.6's new warnings.

Cc: hpa@...or.com
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 arch/x86/boot/video-vga.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Index: linux-2.6.35-rc2-gcc/arch/x86/boot/video-vga.c
===================================================================
--- linux-2.6.35-rc2-gcc.orig/arch/x86/boot/video-vga.c
+++ linux-2.6.35-rc2-gcc/arch/x86/boot/video-vga.c
@@ -41,13 +41,12 @@ static __videocard video_vga;
 static u8 vga_set_basic_mode(void)
 {
 	struct biosregs ireg, oreg;
-	u16 ax;
 	u8 mode;
 
 	initregs(&ireg);
 
 	/* Query current mode */
-	ax = 0x0f00;
+	ireg.ax = 0x0f00;
 	intcall(0x10, &ireg, &oreg);
 	mode = oreg.al;
 
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