Commit 99f381d3 authored by Nishanth Menon's avatar Nishanth Menon Committed by Rafael J. Wysocki
Browse files

PM / OPP: Introduce function to free cpufreq table 



cpufreq table allocated by opp_init_cpufreq_table is better
freed by OPP layer itself. This allows future modifications to
the table handling to be transparent to the users.

Signed-off-by: default avatarNishanth Menon <nm@ti.com>
Acked-by: default avatarKevin Hilman <khilman@ti.com>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent 3110df80

Documentation/power/opp.txt

+2 −0
Original line number Diff line number Diff line
@@ -321,6 +321,8 @@ opp_init_cpufreq_table - cpufreq framework typically is initialized with 
	addition to CONFIG_PM as power management feature is required to

	dynamically scale voltage and frequency in a system.



opp_free_cpufreq_table - Free up the table allocated by opp_init_cpufreq_table



7. Data Structures

==================

Typically an SoC contains multiple voltage domains which are variable. Each

drivers/base/power/opp.c

+17 −0
Original line number Diff line number Diff line
@@ -625,4 +625,21 @@ int opp_init_cpufreq_table(struct device *dev, 


	return 0;

}



/**

 * opp_free_cpufreq_table() - free the cpufreq table

 * @dev:	device for which we do this operation

 * @table:	table to free

 *

 * Free up the table allocated by opp_init_cpufreq_table

 */

void opp_free_cpufreq_table(struct device *dev,

				struct cpufreq_frequency_table **table)

{

	if (!table)

		return;



	kfree(*table);

	*table = NULL;

}

#endif		/* CONFIG_CPU_FREQ */

include/linux/opp.h

+8 −0
Original line number Diff line number Diff line
@@ -94,12 +94,20 @@ static inline int opp_disable(struct device *dev, unsigned long freq) 
#if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)

int opp_init_cpufreq_table(struct device *dev,

			    struct cpufreq_frequency_table **table);

void opp_free_cpufreq_table(struct device *dev,

				struct cpufreq_frequency_table **table);

#else

static inline int opp_init_cpufreq_table(struct device *dev,

			    struct cpufreq_frequency_table **table)

{

	return -EINVAL;

}



static inline

void opp_free_cpufreq_table(struct device *dev,

				struct cpufreq_frequency_table **table)

{

}

#endif		/* CONFIG_CPU_FREQ */



#endif		/* __LINUX_OPP_H__ */

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