linux-kernel - Re: [PATCH v2] ACPI: Execute the

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Message-ID: <9816457.z8EnLU3BXB@vostro.rjw.lan>
Date:	Mon, 04 Jul 2016 15:00:40 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Ocean HY1 He <hehy1@...ovo.com>
Cc:	"lenb@...nel.org" <lenb@...nel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Tanaka <dtanaka@...ovo.com>,
	"lv.zheng@...el.com" <lv.zheng@...el.com>,
	Sumeet Kochar <skochar@...ovo.com>,
	Nagananda Chumbalkar <nchumbalkar@...ovo.com>
Subject: Re: [PATCH v2] ACPI: Execute the _PTS method when system reboot

On Monday, June 27, 2016 02:50:16 PM Ocean HY1 He wrote:
> The _PTS control method is defined in the section 7.4.1 of acpi 6.0
> spec. The _PTS control method is executed by the OS during the sleep
> transition process for S1, S2, S3, S4, and for orderly S5 shutdown.
> 
> The _PTS control method provides the BIOS a mechanism for performing
> some housekeeping, such as writing the sleep type value to the embedded
> controller, before entering the system sleeping state. Note that some
> Lenovo Server BIOS use this mechanism to detect reboot event and
> prompt user by popped dialog box.
> 
> According to section 7.5 of acpi 6.0 spec, _PTS should run after _TTS.
> Add a _PTS evaulation to the existing _TTS reboot notifier and change
> the notifier name to reflect the fact that it's not for _TTS only any
> more.
> 
> Signed-off-by: Ocean He <hehy1@...ovo.com>
> Signed-off-by: Nagananda Chumbalkar <nchumbalkar@...ovo.com>

Applied, thanks!