linux-kernel - Re: [PATCH v2 0/3] rtc: make st-lpc robust against y2038/2106 bug

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Date:   Fri, 23 Jun 2017 16:34:18 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:     Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        john.stultz@...aro.org, tglx@...utronix.de, sboyd@...eaurora.org,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        patrice.chotard@...com, a.zummo@...ertech.it,
        linux-arm-kernel@...ts.infradead.org, rtc-linux@...glegroups.com,
        linaro-kernel@...ts.linaro.org, Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH v2 0/3] rtc: make st-lpc robust against y2038/2106 bug

Hi Alexandre,

On 06/23/2017 04:09 PM, Alexandre Belloni wrote:
> On 23/06/2017 at 13:40:41 -0600, Shuah Khan wrote:
>> On 06/19/2017 03:36 AM, Benjamin Gaignard wrote:
>>> On 32bits platforms "struct timeval" or "time_t" are using u32 to code the
>>> date, this cause tools like "date" or "hwclock" failed even before setting
>>> the RTC device if the date is superior to year 2038 (or 2106).
>>>
>>> To avoid this problem I add one RTC test file which directly use RTC ioctl
>>> to set and read RTC time and alarm values.
>>> rtctest_setdate allow to set any date/time given in the command line.
>>>
>>> On this version 2 I add check of problematics years in rtctest like suggest
>>> by Alexandre.
>>>
>>> Finally that had allowed me to test and fix rtc-st-lpc driver.
>>>
>>> Benjamin Gaignard (3):
>>>   tools: timer: add rtctest_setdate
>>>   tool: timer: rtctest add check for problematic dates
>>>   rtc: st-lpc: make it robust against y2038/2106 bug
>>>
>>>  drivers/rtc/rtc-st-lpc.c                         |  19 ++--
>>>  tools/testing/selftests/timers/Makefile          |   2 +-
>>>  tools/testing/selftests/timers/rtctest.c         | 121 ++++++++++++++++++++++-
>>>  tools/testing/selftests/timers/rtctest_setdate.c |  86 ++++++++++++++++
>>>  4 files changed, 212 insertions(+), 16 deletions(-)
>>>  create mode 100644 tools/testing/selftests/timers/rtctest_setdate.c
>>>
>>
>> Hi Thomas/John,
>>
>> I can take the first two patches in this series through linux-kselftest
>> with your or John's Ack. Please review and let me know one way or the
>> other.
>>> 
> Well, I'm the maintainer for rtctest.c and I'll make sure to also be the
> one for rtctest_setdate.c> 
>> The third one is a rtc driver patch. Please let me know how do you want
>> to handle this series soon we can get this into 4.13-rc1.
>>
> 
> I'll take the three patches but I still have comment I didn't have time
> to give yet.
> 
> 

Okay. I will drop this off my radar then :)

thanks,
-- Shuah