From: Alessandro Zummo <alessandro.zummo@towertech.it>
To: rtc-linux@googlegroups.com
Cc: huacai.chen@intel.com, <linux-acpi@vger.kernel.org>,
<linux-pm@lists.linux-foundation.org>, <lenb@kernel.org>,
<p_gortmaker@yahoo.com>, <linux-kernel@vger.kernel.org>,
akpm@linux-foundation.org
Subject: Re: [PATCH] RTC: Fix CMOS time error after writing /proc/acpi/alarm
Date: Wed, 25 Jun 2008 10:44:16 +0200 [thread overview]
Message-ID: <20080625104416.67af4680@i1501.lan.towertech.it> (raw)
In-Reply-To: <42DFA526FC41B1429CE7279EF83C6BDC014E42D5@pdsmsx415.ccr.corp.intel.com>
On Mon, 23 Jun 2008 18:52:21 +0800
"Chen, Huacai" <huacai.chen@intel.com> wrote:
> From: Huacai Chen <huacai.chen@intel.com>
>
> When writing /proc/acpi/alarm in adjust mode, e.g.
> echo "+0000-00-00 00:00:15" >/proc/acpi/alarm
> The "century" field should be read and added to "year" field before
> writing, otherwise the CMOS time will go back to 2000 years ago, e.g.
> # cat /proc/acpi/alarm
> 0008-06-21 11:38:46
> Then the system time may be reset to the date of manufacture after
> rebooting. This patch fixed this issue.
>
> Signed-off-by: Huacai Chen <huacai.chen@intel.com>
> Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
--
Best regards,
Alessandro Zummo,
Tower Technologies - Torino, Italy
http://www.towertech.it
prev parent reply other threads:[~2008-06-25 8:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-23 10:52 Chen, Huacai
2008-06-24 6:37 ` Zhao Yakui
2008-06-25 8:44 ` Alessandro Zummo [this message]
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