linux-kernel - Re: [REGRESSION] rtc/interface.c: kills suspend-to-ram

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Date:	Mon, 16 Apr 2012 17:49:10 +0200
From:	richard -rw- weinberger <richard.weinberger@...il.com>
To:	Mark Lord <kernel@...savvy.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	rtc-linux@...glegroups.com,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Greg Kroah-Hartman <greg@...ah.com>, stable@...r.kernel.org,
	John Stultz <john.stultz@...aro.org>
Subject: Re: [REGRESSION] rtc/interface.c: kills suspend-to-ram

On Mon, Apr 16, 2012 at 5:42 PM, Mark Lord <kernel@...savvy.com> wrote:
> On 12-04-16 10:23 AM, richard -rw- weinberger wrote:
>> On Mon, Apr 16, 2012 at 3:55 PM, Mark Lord <kernel@...savvy.com> wrote:
>>> On 12-04-16 12:36 AM, Mark Lord wrote:
>>>> Something recent has killed suspend-to-ram on a number of machines here.
>>>> The symptom is that they suspend, but immediately wake up and panic,
>>>> with just a black screen so no visible messages to go by.
>>>>
>>>> The patch below works around the issue -- making things work as they used to work.
>>>>
>>>> +++ linux/drivers/rtc/interface.c     2012-04-16 00:09:14.105387382 -0400
>>>> @@ -773,7 +773,7 @@
>>>>       if (!rtc->ops || !rtc->ops->alarm_irq_enable)
>>>>               return;
>>>>
>>>> -     rtc->ops->alarm_irq_enable(rtc->dev.parent, false);
>>>> +     //rtc->ops->alarm_irq_enable(rtc->dev.parent, false);  // Kills suspend on ZBOX HD-ID41U
>>>>  }
>
>
> How about the line above -- that's the commit that breaks things here.

Download Linus' GIT tree and use git blame. :-)

-- 
Thanks,
//richard
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