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Message-ID: <20080625104416.67af4680@i1501.lan.towertech.it> Date: Wed, 25 Jun 2008 10:44:16 +0200 From: Alessandro Zummo <alessandro.zummo@...ertech.it> To: rtc-linux@...glegroups.com Cc: huacai.chen@...el.com, <linux-acpi@...r.kernel.org>, <linux-pm@...ts.linux-foundation.org>, <lenb@...nel.org>, <p_gortmaker@...oo.com>, <linux-kernel@...r.kernel.org>, akpm@...ux-foundation.org Subject: Re: [PATCH] RTC: Fix CMOS time error after writing /proc/acpi/alarm On Mon, 23 Jun 2008 18:52:21 +0800 "Chen, Huacai" <huacai.chen@...el.com> wrote: > From: Huacai Chen <huacai.chen@...el.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@...el.com> > Acked-by: Pavel Machek <pavel@...e.cz> Acked-by: Alessandro Zummo <a.zummo@...ertech.it> -- Best regards, Alessandro Zummo, Tower Technologies - Torino, Italy http://www.towertech.it -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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