linux-kernel - [PATCH 38/43] x86: check with without_new in show

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Message-Id: <1218353792-3355-39-git-send-email-yhlu.kernel@gmail.com>
Date:	Sun, 10 Aug 2008 00:36:27 -0700
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	Mike Travis <travis@....com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Yinghai Lu <yhlu.kernel@...il.com>
Subject: [PATCH 38/43] x86: check with without_new in show_interrupts

so don't get new one that we don't need

Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>
---
 arch/x86/kernel/irq_64.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index e3117de..2acb719 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -83,7 +83,10 @@ int show_interrupts(struct seq_file *p, void *v)
 
 	if (i < nr_irqs) {
 		unsigned any_count = 0;
-		struct irq_desc *desc = irq_desc(i);
+		struct irq_desc *desc = irq_desc_without_new(i);
+
+		if (!desc)
+			return 0;
 
 		spin_lock_irqsave(&desc->lock, flags);
 #ifndef CONFIG_SMP
-- 
1.5.4.5

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