linux-kernel - Re: [PATCH 0/8] Fix year 2038 issue for sound subsystem

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Date:   Tue, 24 Apr 2018 15:29:38 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Baolin Wang <baolin.wang@...aro.org>
Cc:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Takashi Sakamoto <o-takashi@...amocchi.jp>,
        Ingo Molnar <mingo@...nel.org>,
        SF Markus Elfring <elfring@...rs.sourceforge.net>,
        Dan Carpenter <dan.carpenter@...cle.com>, jeeja.kp@...el.com,
        Vinod Koul <vinod.koul@...el.com>,
        Guneshwor Singh <guneshwor.o.singh@...el.com>,
        subhransu.s.prusty@...el.com, Bhumika Goyal <bhumirks@...il.com>,
        gudishax.kranthikumar@...el.com, Naveen M <naveen.m@...el.com>,
        hardik.t.shah@...el.com, Arvind Yadav <arvind.yadav.cs@...il.com>,
        Fabian Frederick <fabf@...net.be>, alsa-devel@...a-project.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/8] Fix year 2038 issue for sound subsystem

On Tue, Apr 24, 2018 at 2:06 PM, Baolin Wang <baolin.wang@...aro.org> wrote:
> Since many structures will use timespec type variables to record time stamp
> in uapi/asound.h, which are not year 2038 safe on 32bit system. This patchset
> tries to introduce new structures removing timespec type to compatible native
> mode and compat mode.
>
> Moreover this patchset also converts the internal structrures to use timespec64
> type and related APIs.
>
> Arnd Bergmann (2):
>   ALSA: move snd_pcm_ioctl_sync_ptr_compat into pcm_native.c
>   ALSA: add new 32-bit layout for snd_pcm_mmap_status/control
>
> Baolin Wang (6):
>   ALSA: Replace timespec with timespec64
>   ALSA: Avoid using timespec for struct snd_timer_status
>   ALSA: Avoid using timespec for struct snd_ctl_elem_value
>   ALSA: Avoid using timespec for struct snd_pcm_status
>   ALSA: Avoid using timespec for struct snd_rawmidi_status
>   ALSA: Avoid using timespec for struct snd_timer_tread

Thanks a lot for picking this up again and including my two patches!

I've done a private review yesterday, but will have another look either
today or tomorrow to see if I missed anything. I've also applied the
series to my randconfig build tree and will see if that finds any new
bugs. The builder has already found a bug in one of my two patches,
so there might be more.

      Arnd