From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: Regression: ACPI AC driver doesn't work on Toshiba Portege R500 (bisected)
Date: Mon, 24 Nov 2008 00:37:15 +0100
Message-ID: <200811240037.15835.rjw@sisk.pl>
References: <200811230053.14211.rjw@sisk.pl>
Mime-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-2"
Content-Transfer-Encoding: 7bit
Return-path: <linux-acpi-owner@vger.kernel.org>
Received: from ogre.sisk.pl ([217.79.144.158]:39768 "EHLO ogre.sisk.pl"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1750837AbYKWXh3 (ORCPT <rfc822;linux-acpi@vger.kernel.org>);
	Sun, 23 Nov 2008 18:37:29 -0500
In-Reply-To: <200811230053.14211.rjw@sisk.pl>
Content-Disposition: inline
Sender: linux-acpi-owner@vger.kernel.org
List-Id: linux-acpi@vger.kernel.org
To: ACPI Devel Maling List <linux-acpi@vger.kernel.org>
Cc: Alexey Starikovskiy <astarikovskiy@suse.de>, Len Brown <lenb@kernel.org>, LKML <linux-kernel@vger.kernel.org>, Zhang Rui <rui.zhang@intel.com>, walken <walken@zoy.org>

On Sunday, 23 of November 2008, Rafael J. Wysocki wrote:
> Hi,
> 
> With current mainline (2.6.28-rc6-git1 as of today) on Toshiba Portege R500 the
> status of the AC adapter is not updated when the adapter is unplugged and
> plugged in.  Evidently, /sys/class/power_supply/ADP1/online always contains the
> same value.  Interestingly enough, though, if the box is suspended to RAM and
> resumed, the status of the AC adapter is correctly updated, but the value read
> at that time remains in /sys/class/power_supply/ADP1/online until the next
> suspend/resume cycle regardless of what's going on with the AC adapter.
> 
> 2.6.27.7 works correctly on this box so the recent EC patches don't seem to
> cause this regression to happen.
> 
> Any other ideas?

The problem was introduced by the following commit:

commit faee816b1502385dc9bc5abf2960d1cc645844d1
Author: Zhang Rui <rui.zhang@intel.com>
Date:   Fri Sep 12 11:12:25 2008 +0800

    ACPI: don't enable control method power button as wakeup device when Fixed Power button is used

    don't enable control method power button as wakeup device
    when Fixed Power button is used.

    http://bugzilla.kernel.org/show_bug.cgi?id=10503

    Tested-by: walken@zoy.org <walken@zoy.org>
    Signed-off-by: Zhang Rui <rui.zhang@intel.com>
    Signed-off-by: Len Brown <len.brown@intel.com>

Reverting this commit on top of the current mainline makes the kernel behave
correctly again.

Thanks,
Rafael