linux-kernel - Re: [BUG 3.12.rc4] Oops: unable to handle kernel paging request during shutdown

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Message-ID: <1396106.vGULxZgqeb@vostro.rjw.lan>
Date:	Fri, 25 Oct 2013 16:21:31 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Knut Petersen <Knut_Petersen@...nline.de>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Greg KH <greg@...ah.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>
Subject: Re: [BUG 3.12.rc4] Oops: unable to handle kernel paging request during shutdown

On Friday, October 25, 2013 07:19:57 PM Viresh Kumar wrote:
> On 25 October 2013 16:40, Rafael J. Wysocki <rjw@...ysocki.net> wrote:
> > ---
> >  drivers/cpufreq/acpi-cpufreq.c |    8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > Index: linux-pm/drivers/cpufreq/acpi-cpufreq.c
> > ===================================================================
> > --- linux-pm.orig/drivers/cpufreq/acpi-cpufreq.c
> > +++ linux-pm/drivers/cpufreq/acpi-cpufreq.c
> > @@ -986,12 +986,12 @@ static int __init acpi_cpufreq_init(void
> >  {
> >         int ret;
> >
> > +       if (acpi_disabled)
> > +               return -ENODEV;
> > +
> >         /* don't keep reloading if cpufreq_driver exists */
> >         if (cpufreq_get_current_driver())
> > -               return 0;
> > -
> > -       if (acpi_disabled)
> > -               return 0;
> > +               return -EEXIST;
> >
> >         pr_debug("acpi_cpufreq_init\n");
> 
> Even better,
> 
> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

It doesn't lead to any unpleasant side effects on my laptop, so I'm adding it
to my queue of fixes for 3.12-rc7.

Thanks!

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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