linux-kernel - Re: 3.14-rc: /proc/acpi/battery gone?

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Date:	Sat, 15 Mar 2014 11:10:36 -0400
From:	Lan Tianyu <tianyu.lan@...el.com>
To:	Richard Weinberger <richard.weinberger@...il.com>
CC:	Ilia Mirkin <imirkin@...m.mit.edu>, Pavel Machek <pavel@....cz>,
	rjw@...ysocki.net,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	kernel list <linux-kernel@...r.kernel.org>,
	rafael.j.wysocki@...el.com,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: 3.14-rc: /proc/acpi/battery gone?

On 03/14/2014 05:45 PM, Richard Weinberger wrote:
> On Fri, Mar 14, 2014 at 10:29 PM, Ilia Mirkin <imirkin@...m.mit.edu> wrote:
>> On Fri, Mar 14, 2014 at 5:14 PM, Pavel Machek <pavel@....cz> wrote:
>>> Hi!
>>>
>>> It seems /proc/acpi/battery interface is gone, and I don't see any
>>> option to reintroduce it... what is going on?
>>
>> The interface went away in a semi-recent kernel release (3.13 or
>> 3.12), breaking pretty much every battery app. (Admittedly the
>> interface was marked as deprecated for quite some time, but that
>> didn't stop everyone from using it and not caring about the new
>> thing.) I've yet to find a windowmaker dock app that works with the
>> current sysfs API :(
>>
>
> commit 1e2d9cdfb4494fce682b4ae010d86a2766816d36
> Author: Lan Tianyu <tianyu.lan@...el.com>
> Date:   Fri Oct 11 09:54:08 2013 +0800
>
>      ACPI / Battery: Remove battery's proc directory
>
>      The battery's proc directory isn't useded and remove it.
>
>      Signed-off-by: Lan Tianyu <tianyu.lan@...el.com>
>      Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>
> Looks like this one is the said commit.
> If it breaks userspace we have to revert it IMHO.
>

Yes, we will revert the commit if it really breaks some APPs.
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