From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
John Stultz <john.stultz@linaro.org>, Ingo Molnar <mingo@elte.hu>,
Ben Greear <greearb@candelatech.com>,
stable@kernel.org
Subject: [patch 3/3] rtc: Limit frequency
Date: Fri, 22 Jul 2011 09:12:51 -0000 [thread overview]
Message-ID: <20110722091045.537404938@linutronix.de> (raw)
In-Reply-To: 20110722091011.717194327@linutronix.de
[-- Attachment #1: rtc-limit-frequency.patch --]
[-- Type: text/plain, Size: 675 bytes --]
The RTC hrtimer is self rearming. We really need to limit the
frequency to something sensible.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org
---
drivers/rtc/interface.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/drivers/rtc/interface.c
===================================================================
--- linux-2.6.orig/drivers/rtc/interface.c
+++ linux-2.6/drivers/rtc/interface.c
@@ -708,7 +708,7 @@ int rtc_irq_set_freq(struct rtc_device *
int err = 0;
unsigned long flags;
- if (freq <= 0)
+ if (freq <= 0 || freq > 5000)
return -EINVAL;
retry:
spin_lock_irqsave(&rtc->irq_task_lock, flags);
next prev parent reply other threads:[~2011-07-22 9:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-22 9:12 [patch 0/3] rtc: Assorted bug fixes Thomas Gleixner
2011-07-22 9:12 ` [patch 1/3] rtc: Handle errors correctly in rtc_irq_set_state() Thomas Gleixner
2011-07-22 22:04 ` Andrew Morton
2011-07-23 7:15 ` Thomas Gleixner
2011-07-22 9:12 ` [patch 2/3] rtc: Fix hrtimer deadlock Thomas Gleixner
2011-07-22 22:11 ` Andrew Morton
2011-07-23 7:22 ` Thomas Gleixner
2011-07-22 9:12 ` Thomas Gleixner [this message]
2011-07-22 22:05 ` [patch 3/3] rtc: Limit frequency Andrew Morton
2011-07-22 22:39 ` [stable] " Willy Tarreau
2011-08-05 3:39 ` Joshua Kinard
2011-08-05 9:04 ` John Stultz
2011-08-06 7:28 ` Joshua Kinard
2011-07-23 7:17 ` Thomas Gleixner
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