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

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Message-Id: <1497621833-9942-1-git-send-email-benjamin.gaignard@linaro.org>
Date:   Fri, 16 Jun 2017 16:03:50 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...aro.org>
To:     john.stultz@...aro.org, tglx@...utronix.de, sboyd@...eaurora.org,
        shuah@...nel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, patrice.chotard@...com,
        a.zummo@...ertech.it, alexandre.belloni@...e-electrons.com,
        linux-arm-kernel@...ts.infradead.org, rtc-linux@...glegroups.com
Cc:     linaro-kernel@...ts.linaro.org,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>
Subject: [PATCH 0/3] rtc: make st-lpc robust against y2038/2106 bug

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 two RTC tests files 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.
rtctest-2038 perform a basic test by writing 1-1-2200 in RTC time and alarm
and checking that the read back values are correct.

Finally that had allowed me to test and fix rtc-st-lpc driver.

Benjamin Gaignard (3):
  tools: timer: add rtctest_setdate
  tools: timer: add test to check y2038/2106 bug
  rtc: st-lpc: make it robust against y2038/2106 bug

 drivers/rtc/rtc-st-lpc.c                         |  19 ++--
 tools/testing/selftests/timers/Makefile          |   4 +-
 tools/testing/selftests/timers/rtctest-2038.c    | 135 +++++++++++++++++++++++
 tools/testing/selftests/timers/rtctest_setdate.c |  86 +++++++++++++++
 4 files changed, 232 insertions(+), 12 deletions(-)
 create mode 100644 tools/testing/selftests/timers/rtctest-2038.c
 create mode 100644 tools/testing/selftests/timers/rtctest_setdate.c

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1.9.1