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| author | Nishanth Menon <nm@ti.com> | 2011-05-23 17:59:44 -0500 |
|---|---|---|
| committer | Nishanth Menon <nm@ti.com> | 2011-06-13 16:42:52 -0500 |
| commit | 17b3f04ddfb8fe490130a9835c72c5d2f93c894b (patch) | |
| tree | e1ddf4998fcc80de15fd222295a69cccda7c8615 | |
| parent | 96eed1d5e436900413a961452b344205992bb0bb (diff) | |
| download | kernel_samsung_tuna-17b3f04ddfb8fe490130a9835c72c5d2f93c894b.zip kernel_samsung_tuna-17b3f04ddfb8fe490130a9835c72c5d2f93c894b.tar.gz kernel_samsung_tuna-17b3f04ddfb8fe490130a9835c72c5d2f93c894b.tar.bz2 | |
PM: OPP: introduce function to free cpufreq table(v2)
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.
Example discussion: http://marc.info/?t=130570440600005&r=1&w=2
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
| -rw-r--r-- | Documentation/power/opp.txt | 2 | ||||
| -rw-r--r-- | drivers/base/power/opp.c | 17 | ||||
| -rw-r--r-- | include/linux/opp.h | 8 |
3 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/power/opp.txt b/Documentation/power/opp.txt index 5ae70a12..3035d00 100644 --- a/Documentation/power/opp.txt +++ b/Documentation/power/opp.txt @@ -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 diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c index 56a6899..5cc1232 100644 --- a/drivers/base/power/opp.c +++ b/drivers/base/power/opp.c @@ -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 */ diff --git a/include/linux/opp.h b/include/linux/opp.h index 5449945..7020e97 100644 --- a/include/linux/opp.h +++ b/include/linux/opp.h @@ -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__ */ |