linux-kernel - Re: [PATCH V3 1/6] cpufreq: suspend governors on system suspend/hibernate

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Date:	Tue, 26 Nov 2013 09:42:43 +0530
From:	viresh kumar <viresh.kumar@...aro.org>
To:	rjw@...ysocki.net
CC:	linaro-kernel@...ts.linaro.org, patches@...aro.org,
	cpufreq@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, nm@...com, swarren@...dotorg.org,
	kgene.kim@...sung.com, linux-samsung-soc@...r.kernel.org,
	linux-tegra@...r.kernel.org, jinchoi@...adcom.com,
	tianyu.lan@...el.com, sebastian.capella@...aro.org,
	jhbird.choi@...sung.com, Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [PATCH V3 1/6] cpufreq: suspend governors on system suspend/hibernate

On Monday 25 November 2013 07:41 PM, Viresh Kumar wrote:
> diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
> index dc196bb..6d93f91 100644
> --- a/include/linux/cpufreq.h
> +++ b/include/linux/cpufreq.h
> @@ -255,6 +255,9 @@ struct cpufreq_driver {
>  int cpufreq_register_driver(struct cpufreq_driver *driver_data);
>  int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
>  
> +void cpufreq_suspend(void);
> +void cpufreq_resume(void);
> +
>  const char *cpufreq_get_current_driver(void);
>  
>  static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,

A minor fix here to get kernel compiled without cpufreq support enabled:

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 8d8b2f4..d40809d 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -259,9 +259,6 @@ struct cpufreq_driver {
 int cpufreq_register_driver(struct cpufreq_driver *driver_data);
 int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);

-void cpufreq_suspend(void);
-void cpufreq_resume(void);
-
 const char *cpufreq_get_current_driver(void);

 static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
@@ -287,6 +284,14 @@ cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy)
                        policy->cpuinfo.max_freq);
 }

+#ifdef CONFIG_CPU_FREQ
+void cpufreq_suspend(void);
+void cpufreq_resume(void);
+#elif
+static inline void cpufreq_suspend(void) {}
+static inline void cpufreq_resume(void) {}
+#endif
+
 /*********************************************************************
  *                     CPUFREQ NOTIFIER INTERFACE                    *
  *********************************************************************/
--
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