linux-kernel - Re: [PATCH] ARM: OMAP2+: omap_device: drop broken RPM status update from suspend

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Date:   Tue, 25 Jul 2017 01:55:17 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Johan Hovold <johan@...nel.org>
Cc:     Russell King <linux@...linux.org.uk>, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Alan Stern <stern@...land.harvard.edu>,
        Dave Gerlach <d-gerlach@...com>,
        Kevin Hilman <khilman@...libre.com>,
        Nishanth Menon <nm@...com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: Re: [PATCH] ARM: OMAP2+: omap_device: drop broken RPM status update
 from suspend_noirq

* Johan Hovold <johan@...nel.org> [170724 02:53]:
> Since commit a8636c89648a ("PM / Runtime: Don't allow to suspend a
> device with an active child"), which went into 4.10, it is no longer
> permitted to set RPM_SUSPENDED state for a device with active children
> (unless power.ignore_children is set).
> 
> This specifically means that the attempts to do just that from the omap
> pm-domain suspend_noirq callback have since been failing whenever a
> child is active, for example:
> 
>   am335x-usb-childs 47400000.usb: runtime PM trying to suspend
>     device but active child
> 
> Silence this warning by dropping the broken pm_runtime_set_suspended()
> call from the omap suspend_noirq callback along with the redundant
> pm_runtime_set_active() in resume_noirq.

With this things still work for me for my PM tests on omap3. Device
suspends and resumes just fine hitting off mode during suspend.

Regards,

Tony