[PATCH 16/23] x86, realmode: Fix always-zero test in reboot_32.S

[Jarkko Sakkinen]

From: "H. Peter Anvin" <hpa@xxxxxxxxxxxxxxx>

A test instruction is an "and", and an and with zero is always zero.
This would cause us to always take the BIOS path, not the APM path, in
case anyone actually cares...

Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
 arch/x86/realmode/rm/reboot_32.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/realmode/rm/reboot_32.S b/arch/x86/realmode/rm/reboot_32.S
index e90f8c4..50ba994 100644
--- a/arch/x86/realmode/rm/reboot_32.S
+++ b/arch/x86/realmode/rm/reboot_32.S
@@ -85,7 +85,7 @@ machine_real_restart_asm16:
 	movl	%edx, %cr0
 	LJMPW_RM(3f)
 3:
-	testb	$0, %al
+	andw	%ax, %ax
 	jz	bios
 
 apm:
-- 
1.7.9.5

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