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[PATCH v2 0/2] Convert ppdev to y2038 safe

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These series of patches try to convert parport device(ppdev) to
y2038 safe, and support y2038 safe and unsafe application at the
same time. The first version is here[1].

An y2038 safe application/kernel use 64bit time_t(aka time64_t)
to avoid 32-bit time types broken in the year 2038. Given that
some time relative struct(e.g. timeval in ppdev.c) is mainly the
offset of the real time, the old 32bit time_t in such application
is safe. We need to handle the 32bit time_t and 64bit time_t
application at the same time. My approach here is handle them as
different ioctl command for different size of timeval.

Build successful on arm64, arm and x86_64.

Changes since v1:
1.  Fix the warning when build against x86_64.

[1] https://lkml.org/lkml/2015/12/9/32

Bamvor Jian Zhang (2):
  ppdev: convert to y2038 safe
  ppdev: add support for compat ioctl

 drivers/char/ppdev.c | 87 ++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 67 insertions(+), 20 deletions(-)

-- 
2.1.4

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[PATCH v2 0/2] Convert ppdev to y2038 safe Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> - 2015-12-17 11:00 +0100
  [PATCH v2 1/2] ppdev: convert to y2038 safe Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> - 2015-12-17 11:00 +0100
  [PATCH v2 2/2] ppdev: add support for compat ioctl Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> - 2015-12-17 11:00 +0100
    Re: [PATCH v2 2/2] ppdev: add support for compat ioctl Arnd Bergmann <arnd@arndb.de> - 2015-12-18 00:20 +0100
      Re: [PATCH v2 2/2] ppdev: add support for compat ioctl Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2015-12-30 12:20 +0100
        Re: [PATCH v2 2/2] ppdev: add support for compat ioctl Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> - 2015-12-30 14:30 +0100
          Re: [PATCH v2 2/2] ppdev: add support for compat ioctl Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2015-12-30 14:50 +0100
          Re: [Y2038] [PATCH v2 2/2] ppdev: add support for compat ioctl Arnd Bergmann <arnd@arndb.de> - 2015-12-30 15:00 +0100
            Re: [Y2038] [PATCH v2 2/2] ppdev: add support for compat ioctl Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> - 2015-12-30 15:30 +0100
              Re: [Y2038] [PATCH v2 2/2] ppdev: add support for compat ioctl Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2015-12-31 10:50 +0100
                Re: [Y2038] [PATCH v2 2/2] ppdev: add support for compat ioctl Arnd Bergmann <arnd@arndb.de> - 2015-12-31 15:20 +0100
                Re: [Y2038] [PATCH v2 2/2] ppdev: add support for compat ioctl Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2016-01-01 06:10 +0100
                Re: [Y2038] [PATCH v2 2/2] ppdev: add support for compat ioctl Arnd Bergmann <arnd@arndb.de> - 2016-01-01 23:20 +0100

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