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Date:   Thu, 7 Mar 2019 00:10:14 +0100
From:   Pavel Machek <>
To:     Marek Szyprowski <>
        MyungJoo Ham <>,
        Chanwoo Choi <>,
        Krzysztof Kozlowski <>,
        Bartlomiej Zolnierkiewicz <>,
        Lukasz Luba <>,
        Markus Reichl <>
Subject: Re: [PATCH] devfreq: Suspend all devices on system shutdown

On Fri 2019-01-25 14:54:03, Marek Szyprowski wrote:
> This way devfreq core ensures that all its devices will be set to safe
> operation points before reboot operation. There are board on which some
> aggressive power saving operation points are behind the capabilities of
> the bootloader to properly reset the hardware and boot the board. This
> way one can avoid board crash early after reboot.
> Similar pattern is used in CPUfreq subsystem.

This looks somehow dangerous to me. I guess this will break someone's
shutdown, and on battery-powered devices, that's quite bad thing to

Could we explicitely do it only for devices that need it?
(cesky, pictures)

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