linux-kernel - Re: pm_trace displays the wrong time from the RTC

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Message-Id: <200708011747.37932.rjw@sisk.pl>
Date:	Wed, 1 Aug 2007 17:47:37 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Chuck Ebbert <cebbert@...hat.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: pm_trace displays the wrong time from the RTC

Sorry for slow response, I've just noticed this thread.

On Tuesday, 31 July 2007 23:20, Chuck Ebbert wrote:
> When resuming, systems print this when booted on 07/31/07:
> 
> Date: 06/31/107
> 
> /drivers/base/power/trace.c::read_magic_time():
> 114	get_rtc_time(&time);
> 115	printk("Time: %2d:%02d:%02d Date: %02d/%02d/%02d\n",
> 116		time.tm_hour, time.tm_min, time.tm_sec,
> 117		time.tm_mon, time.tm_mday, time.tm_year);
> 
> include/asm-generic/rtc.h:
> 102         /*
> 103          * Account for differences between how the RTC uses the values
> 104          * and how they are defined in a struct rtc_time;
> 105          */
> 106         if (time->tm_year <= 69)
> 107                 time->tm_year += 100;
> 108 
> 109         time->tm_mon--;

Do you mean that systems display bad date after resuming if PM_TRACE is set,
even if /sys/power/pm_trace contains 1 ?

If that's the case, are they i386 or x86_64?

Greetings,
Rafael

-- 
"Premature optimization is the root of all evil." - Donald Knuth
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