linux-kernel - [GIT PULL] irq fix

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Message-ID: <20110613095133.GA21222@elte.hu>
Date:	Mon, 13 Jun 2011 11:51:33 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] irq fix

Linus,

Please pull the latest irq-urgent-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git irq-urgent-for-linus

 Thanks,

	Ingo

------------------>
Jesper Juhl (1):
      genirq: Prevent potential NULL dereference in irq_set_irq_wake()


 kernel/irq/manage.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index d64bafb..0a7840ae 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -491,6 +491,9 @@ int irq_set_irq_wake(unsigned int irq, unsigned int on)
 	struct irq_desc *desc = irq_get_desc_buslock(irq, &flags);
 	int ret = 0;
 
+	if (!desc)
+		return -EINVAL;
+
 	/* wakeup-capable irqs can be shared between drivers that
 	 * don't need to have the same sleep mode behaviors.
 	 */
--
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