Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1338824

Re: [PATCH] rtc: Add an option to invalidate dates in 2038

From Alexandre Belloni <alexandre.belloni@free-electrons.com>
Newsgroups linux.kernel
Subject Re: [PATCH] rtc: Add an option to invalidate dates in 2038
Date 2016-02-21 00:50 +0100
Message-ID <r4prI-5gp-3@gated-at.bofh.it> (permalink)
References <r4leq-23T-1@gated-at.bofh.it> <r4lHr-2li-7@gated-at.bofh.it> <r4mDw-2VT-5@gated-at.bofh.it> <r4o2B-4bH-13@gated-at.bofh.it> <r4oYG-523-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On 21/02/2016 at 00:17:02 +0100, Alexandre Belloni wrote :
> All the failures seem quite random to me but the reports I get are not
> that precise.
> 
> I know it happens with PCF8523 and that can be true because the
> datasheet says the date is undefined at reset. The handling of the OS
> bit (that bit indicates the date is probably wrong) has to be fixed and
> I will take care of that.
> 
> If that is the only RTC with that particular issue, we clearly don't
> need my workaround. But As I say, I can ask but I don't have a clear
> list of the affected system and their RTC.
> 

I add that it also seem to affect the Allwinner A20 RTC. I'm not sure
how much we can trust the datasheet but it claims the reset value is 0
and I don't think there is a way to know whether the date is correct or
not.


-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-20 20:20 +0100
  Re: [PATCH] rtc: Add an option to invalidate dates in 2038 One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-02-20 20:50 +0100
    Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-20 21:50 +0100
      Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Arnd Bergmann <arnd@arndb.de> - 2016-02-20 23:20 +0100
        Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-21 00:20 +0100
          Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-21 00:50 +0100
          Re: [PATCH] rtc: Add an option to invalidate dates in 2038 One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-02-21 18:30 +0100
            Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-22 14:10 +0100
              Re: [PATCH] rtc: Add an option to invalidate dates in 2038 One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-02-22 14:50 +0100
                Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Arnd Bergmann <arnd@arndb.de> - 2016-02-22 16:50 +0100
                Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-22 17:00 +0100
                Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Arnd Bergmann <arnd@arndb.de> - 2016-02-22 17:20 +0100
                Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-22 17:50 +0100
                Re: [PATCH] rtc: Add an option to invalidate dates in 2038 "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2016-02-22 17:50 +0100
                Re: [PATCH] rtc: Add an option to invalidate dates in 2038 Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-02-22 18:10 +0100

csiph-web