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List:       util-linux-ng
Subject:    Re: mimic the RTC restart delay (was: hwclock issue)
From:       Alessandro Zummo <alessandro.zummo () towertech ! it>
Date:       2008-08-07 17:45:45
Message-ID: 20080807194545.5166703d () i1501 ! lan ! towertech ! it
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On Thu, 7 Aug 2008 14:41:14 +0200 (CEST)
Alain Guibert <alguibert+ulng@free.fr> wrote:

> Hello David,
> 
>  On Wednesday, August 6, 2008 at 17:19:49 -0700, David Brownell wrote:
> 
> > in practice [/sys/class/rtc/rtc0/settime_offset_ms is] never needed
> > except for PC-compatible RTCs (as we already discussed).
> 
> You proposed that in the absence of the settime_offset_Ns information,
> hwclock should consider it to be zero. There is a problem with this
> approach: hwclock would misbehave on PC-compatible RTCs with today's and
> older kernels.

 hwclock could check /sys/class/rtc/rtc0/name and assume 0 if the driver
 is not rtc_cmos.
 

-- 

 Best regards,

 Alessandro Zummo,
  Tower Technologies - Torino, Italy

  http://www.towertech.it

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