linux-kernel - [PATCH 2/2] clockevents: assert min_delta

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Date:	Fri, 20 Nov 2009 20:23:40 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Luming Yu <luming.yu@...il.com>
Subject: [PATCH 2/2] clockevents: assert min_delta_ns being increased in error path

tick_dev_program_event failed to increase min_delta_ns if the initial
value was 1.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Luming Yu <luming.yu@...il.com>
---
 kernel/time/tick-oneshot.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/time/tick-oneshot.c b/kernel/time/tick-oneshot.c
index 2dd23c3..c3712c4 100644
--- a/kernel/time/tick-oneshot.c
+++ b/kernel/time/tick-oneshot.c
@@ -44,7 +44,7 @@ int tick_dev_program_event(struct clock_event_device *dev, ktime_t expires,
 		 */
 		if (++i > 2) {
 			/* Increase the min. delta and try again */
-			if (!dev->min_delta_ns)
+			if (dev->min_delta_ns <= 1)
 				dev->min_delta_ns = 5000;
 			else
 				dev->min_delta_ns += dev->min_delta_ns >> 1;
-- 
1.6.5.2

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