linux-kernel - Re: [PATCH V5 0/7] cpufreq: suspend early/resume late: dpm

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Date:	Wed, 19 Feb 2014 09:45:44 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Nishanth Menon <nm@...com>, Kgene Kim <kgene.kim@...sung.com>,
	jinchoi@...adcom.com, Lan Tianyu <tianyu.lan@...el.com>,
	Sebastian Capella <sebastian.capella@...aro.org>,
	Jonghwan Choi <jhbird.choi@...sung.com>
Subject: Re: [PATCH V5 0/7] cpufreq: suspend early/resume late: dpm_{suspend|resume}()

On 19-Feb-2014 1:48 AM, "Stephen Warren" <swarren@...dotorg.org> wrote:
>
> On 02/17/2014 02:20 AM, Viresh Kumar wrote:
> > On 15 February 2014 05:33, Stephen Warren <swarren@...dotorg.org> wrote:
> >> On 02/14/2014 03:23 PM, Rafael J. Wysocki wrote:
> >
> >>> Well, it would be good to verify which part, then.
> >>
> >> Patch 2/7 appears to stop that message from being printed during
> >> suspend, and perhaps reduce the number of times it's printed during
> >> resume. Patch 7/7 stops the message being printed at all.
> >>
> >> Looking at patch 7, I wonder if it's simply because tegra_target() was
> >> modified never to return -EBUSY, so the bug is still there, but it's
> >> just been hidden.
> >
> > No, the bug is removed now. Its hidden in current linus/master :)
>
> I'm not sure what that means; I still see the message:

I have given a better reply in one of the earlier mails in this thread.
And skipped a more elaborative reply now.

So this failure was always there since long time, as you disable your
target() fn early in suspend. But the message wasn't printed earlier.

A recently added core patch started printing this, so not a new bug.
But this series fixes suspend resume completely and you wouldn't see it
anymore.
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