From 10b496832efa046ab9222a8cf132681730886db3 Mon Sep 17 00:00:00 2001
From: Varun Swara <Varun.Swara@arm.com>
Date: Wed, 9 Dec 2009 10:02:19 +0000
Subject: [PATCH] ARM: Do not allow the probing of the local timer

Since this IRQ descriptor doesn't have an action registered, it is
allowed for probing via probe_irq_on/off() and it will be disabled by
the latter function. This patch sets the IRQ_NOPROBE status bit for the
local timer descriptor.

Signed-off-by: Varun Swara <Varun.Swara@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---
 arch/arm/kernel/smp_twd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index a73a34dccf2a..ea02a7b1c244 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -160,6 +160,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 
 	/* Make sure our local interrupt controller has this enabled */
 	local_irq_save(flags);
+	irq_to_desc(clk->irq)->status |= IRQ_NOPROBE;
 	get_irq_chip(clk->irq)->unmask(clk->irq);
 	local_irq_restore(flags);