linux-kernel - Re: [PATCH v1 0/6] Introduce power off call chain API

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Message-ID: <CAHp75VeHC5M-Rv+wvJQEvmtfX0k7fP6uremGHFMnd8kEqPnBpw@mail.gmail.com>
Date:   Thu, 7 Oct 2021 10:18:52 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Lee Jones <lee.jones@...aro.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Russell King <linux@...linux.org.uk>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-tegra <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v1 0/6] Introduce power off call chain API

On Thu, Oct 7, 2021 at 9:05 AM Dmitry Osipenko <digetx@...il.com> wrote:
>
> Introduce power off call chain API that is inspired by the restart API.
> It allows to have multiple power off handlers invoked along the chain

allows multiple

> until system is powered off. For the starter this series converts couple

the system
a couple

> NVIDIA Tegra drivers to the new API. Existing pm_power_off() method
> stays around and may be removed once all users will adopt the new API.

users adopt

>
> There were couple attempts in the past to add power off API from

a couple

> Guenter Roeck and Thierry Reding, but they were never completed. This
> is a somewhat simplified version which doesn't try to convert whole kernel
> to the new API at once, but solves immediate practical problem that we

problems

> have on Nexus 7 Android tablet where device needs to chain power off

tablets where the device

> methods.

Immediate question here is how do you see the plan of spreading this.
I.o.w. can you put an explanation that you have checked, let's say
>80% current users, and they may be converted like [example
placeholder] without any special tricks?

-- 
With Best Regards,
Andy Shevchenko