linux-kernel - Re: [PATCH AUTOSEL 4.14 03/15] Input: i8042 - enable keyboard wakeups by default when s2idle is used

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Message-ID: <20181026105620.GC2015@sasha-vm>
Date:   Fri, 26 Oct 2018 06:56:20 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Pavel Machek <pavel@....cz>
Cc:     stable@...r.kernel.org, linux-kernel@...r.kernel.org,
        Daniel Drake <drake@...lessm.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: Re: [PATCH AUTOSEL 4.14 03/15] Input: i8042 - enable keyboard
 wakeups by default when s2idle is used

On Fri, Oct 26, 2018 at 11:04:52AM +0200, Pavel Machek wrote:
>On Mon 2018-10-22 06:20:14, Sasha Levin wrote:
>> From: Daniel Drake <drake@...lessm.com>
>>
>> [ Upstream commit 684bec1092b6991ff2a7751e8a763898576eb5c2 ]
>>
>> Previously, on typical consumer laptops, pressing a key on the keyboard
>> when the system is in suspend would cause it to wake up (default or
>> unconditional behaviour). This happens because the EC generates a SCI
>> interrupt in this scenario.
>>
>> That is no longer true on modern laptops based on Intel WhiskeyLake,
>> including Acer Swift SF314-55G, Asus UX333FA, Asus UX433FN and Asus
>> UX533FD. We confirmed with Asus EC engineers that the "Modern Standby"
>> design has been modified so that the EC no longer generates a SCI
>> in this case; the keyboard controller itself should be used for wakeup.
>>
>> In order to retain the standard behaviour of being able to use the
>> keyboard to wake up the system, enable serio wakeups by default on
>> platforms that are using s2idle.
>
>Behaviour change, not a bugfix. Someone may like their laptop sleeping
>after keypress, we should not change it in the middle of -stable
>series.

Dmitry already asked for it to be dropped, so it's gone.

--
Thanks,
Sasha