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From:   Thomas Renninger <trenn@suse.de>
To:     "Rafael J. Wysocki" <rafael@kernel.org>
Cc:     ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
        Rafael Wysocki <rafael.j.wysocki@intel.com>,
        "Zhang, Rui" <rui.zhang@intel.com>
Subject: Re: Remove last acpi procfs dirs after being marked deprecated for a decade
Date:   Wed, 27 May 2020 18:07:25 +0200
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Am Mittwoch, 27. Mai 2020, 17:49:09 CEST schrieb Rafael J. Wysocki:
> On Wed, May 27, 2020 at 5:33 PM Thomas Renninger <trenn@suse.de> wrote:
> > Kernel development should not be hindered anymore by this absolutely
> > outdated stuff.
> 
> Well, this is a bit vague.
> 
> I'm not against making this change, but why do it now?  Is there
> anything in particular that cannot be done without it?

Because of the deprecated message being shown on laptops booting with
the option enabled. I got a bugreport about it recently.

I could not please check_patch to properly include this commit id
(recon the double quotes in the title):

e63f6e28dda6de3de2392ddca321e211fd860925
Date:   Mon Jul 7 01:13:46 2014 +0200

    Revert "ACPI / AC: Remove AC's proc directory."
    
    Revert commit ab0fd674d6ce (ACPI / AC: Remove AC's proc directory.),
    because some old tools (e.g. kpowersave from kde 3.5.10) are still
    using /proc/acpi/ac_adapter.
    
    Fixes: ab0fd674d6ce (ACPI / AC: Remove AC's proc directory.)


kpowersave was written by myself and I can say for sure, that this stuff
is more than outdated.

Thanks,

   Thomas