linux-kernel - Re: [PATCH] cpufreq: longhaul: Set transition_delay

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Message-ID: <alpine.LRH.2.21.1711290859010.803@math.ut.ee>
Date:   Wed, 29 Nov 2017 08:59:27 +0200 (EET)
From:   Meelis Roos <mroos@...ux.ee>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        "4 . 14+" <stable@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: longhaul: Set transition_delay_us to 20 ms

> > diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
> > index c46a12df40dd..56eafcb07859 100644
> > --- a/drivers/cpufreq/longhaul.c
> > +++ b/drivers/cpufreq/longhaul.c
> > @@ -894,7 +894,7 @@ static int longhaul_cpu_init(struct cpufreq_policy *policy)
> >         if ((longhaul_version != TYPE_LONGHAUL_V1) && (scale_voltage != 0))
> >                 longhaul_setup_voltagescaling();
> >
> > -       policy->cpuinfo.transition_latency = 200000;    /* nsec */
> > +       policy->transition_delay_us = 20000;    /* usec */
> >
> >         return cpufreq_table_validate_and_show(policy, longhaul_table);
> >  }
> > --
> 
> Meelis, please check if this fixes the shutdown issue you have
> reported recently.

Yes, but not today - hopefully tomorrow.

-- 
Meelis Roos (mroos@...ux.ee)