linux-kernel - Re: [PATCH v10 7/7] at24: Support probing while off

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Message-ID: <CAMpxmJU7J9JBSwCN+GLDpuOL=iZ1PH=oZZuGiAyovuf2TQ=o9A@mail.gmail.com>
Date:   Mon, 8 Feb 2021 17:44:17 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     linux-i2c <linux-i2c@...r.kernel.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rajmohan Mani <rajmohan.mani@...el.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Chiranjeevi Rapolu <chiranjeevi.rapolu@...el.com>,
        Hyungwoo Yang <hyungwoo.yang@...el.com>,
        linux-media <linux-media@...r.kernel.org>
Subject: Re: [PATCH v10 7/7] at24: Support probing while off

On Fri, Feb 5, 2021 at 2:25 PM Sakari Ailus
<sakari.ailus@...ux.intel.com> wrote:
>
> In certain use cases (where the chip is part of a camera module, and the
> camera module is wired together with a camera privacy LED), powering on
> the device during probe is undesirable. Add support for the at24 to
> execute probe while being powered off. For this to happen, a hint in form
> of a device property is required from the firmware.
>
> Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
> Reviewed-by: Tomasz Figa <tfiga@...omium.org>
> ---

I'll ack this but I still claim that the name
acpi_dev_state_low_power() is super misleading for this use-case and
I've been saying that for 10 versions now with everyone just ignoring
my remarks. :/

Acked-by: Bartosz Golaszewski <bgolaszewski@...libre.com>