From 6b4722a7779ebadcf016fd96ce3156b6acda8a31 Mon Sep 17 00:00:00 2001
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Tue, 27 May 2008 21:19:28 +0100
Subject: [PATCH] x86: I/O APIC: remove redundant LVT0 masking

The LINT0 line of the local APIC is masked in the LVT0 entry in
check_timer() before this function is ever called.  Removed the
redundant unmasking for better control.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/io_apic_32.c | 3 ---
 arch/x86/kernel/io_apic_64.c | 3 ---
 2 files changed, 6 deletions(-)

diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c
index 6e743ecf863b..51e5519ee1a7 100644
--- a/arch/x86/kernel/io_apic_32.c
+++ b/arch/x86/kernel/io_apic_32.c
@@ -1310,9 +1310,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 
 	memset(&entry,0,sizeof(entry));
 
-	/* mask LVT0 */
-	apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
-
 	/*
 	 * We use logical delivery to get the timer IRQ
 	 * to the first CPU.
diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index 83d4e117746b..565f19b01bf4 100644
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -906,9 +906,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 
 	memset(&entry, 0, sizeof(entry));
 
-	/* mask LVT0 */
-	apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
-
 	/*
 	 * We use logical delivery to get the timer IRQ
 	 * to the first CPU.
-- 
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