linux-kernel - Re: [PATCH] cpufreq: Print driver name if cpufreq

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Date:   Mon, 26 Aug 2019 11:22:56 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        linux-kernel@...r.kernel.org,
        "open list:CPU FREQUENCY SCALING FRAMEWORK" 
        <linux-pm@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: Print driver name if cpufreq_suspend() fails

On Thursday, August 22, 2019 6:21:20 PM CEST Florian Fainelli wrote:
> On 8/21/19 7:42 PM, Viresh Kumar wrote:
> > On 21-08-19, 16:16, Florian Fainelli wrote:
> >> Instead of printing the policy, which is incidentally a kernel pointer,
> >> so with limited interest, print the cpufreq driver name that failed to
> >> be suspend, which is more useful for debugging.
> >>
> >> Fixes: 2f0aea936360 ("cpufreq: suspend governors on system suspend/hibernate")
> > 
> > I will drop this tag as this isn't a bug really.
> 
> Indeed, that was a bit too trigger happy on my side. Thanks!

Applied without the Fixes tag, thanks!

> > 
> >> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
> >> ---
> >>  drivers/cpufreq/cpufreq.c | 4 ++--
> >>  1 file changed, 2 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> >> index c28ebf2810f1..330d789f81fc 100644
> >> --- a/drivers/cpufreq/cpufreq.c
> >> +++ b/drivers/cpufreq/cpufreq.c
> >> @@ -1807,8 +1807,8 @@ void cpufreq_suspend(void)
> >>  		}
> >>  
> >>  		if (cpufreq_driver->suspend && cpufreq_driver->suspend(policy))
> >> -			pr_err("%s: Failed to suspend driver: %p\n", __func__,
> >> -				policy);
> >> +			pr_err("%s: Failed to suspend driver: %s\n", __func__,
> >> +				cpufreq_driver->name);
> >>  	}
> >>  
> >>  suspend:
> > 
> > Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
> > 
> 
> 
>