linux-kernel - Re: [PATCH v2 0/2] pinctrl: Allow indicating loss of state across suspend/resume

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Message-ID: <20171103173353.GJ28152@atomide.com>
Date:   Fri, 3 Nov 2017 10:33:53 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Charles Keepax <ckeepax@...nsource.cirrus.com>,
        linux-gpio@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        ckeepax@...nsource.wolfsonmicro.com, swarren@...dia.com,
        andy.shevchenko@...il.com, alcooperx@...il.com,
        bcm-kernel-feedback-list@...adcom.com,
        "Rafael J. Wysocki" <rjw@...ysocki.net>, linux-pm@...r.kernel.org
Subject: Re: [PATCH v2 0/2] pinctrl: Allow indicating loss of state across
 suspend/resume

* Florian Fainelli <f.fainelli@...il.com> [171103 17:04]:
> On 11/03/2017 09:11 AM, Tony Lindgren wrote:
> The pinctrl provider is losing its state, hence these two patches.

OK

> > Anyways, the context lost flag should be managed in the PM core for
> > the device, so adding linux-pm and Rafael to Cc.
> 
> I don't think it's that simple but sure, why not.

Just having bool context_lost in struct dev_pm_info would probably
be enough to allow drivers to deal with it. This flag could then
be set for a device by power domain related code that knows if
context got lost.

Anybody got better ideas?

Regards,

Tony