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Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
-rw-r--r--drivers/cpufreq/cpufreq.c24
1 files changed, 9 insertions, 15 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 0e626b00053b..e10922709d13 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -206,17 +206,15 @@ unsigned int cpufreq_generic_get(unsigned int cpu)
206EXPORT_SYMBOL_GPL(cpufreq_generic_get); 206EXPORT_SYMBOL_GPL(cpufreq_generic_get);
207 207
208/** 208/**
209 * cpufreq_cpu_get: returns policy for a cpu and marks it busy. 209 * cpufreq_cpu_get - Return policy for a CPU and mark it as busy.
210 * @cpu: CPU to find the policy for.
210 * 211 *
211 * @cpu: cpu to find policy for. 212 * Call cpufreq_cpu_get_raw() to obtain a cpufreq policy for @cpu and increment
213 * the kobject reference counter of that policy. Return a valid policy on
214 * success or NULL on failure.
212 * 215 *
213 * This returns policy for 'cpu', returns NULL if it doesn't exist. 216 * The policy returned by this function has to be released with the help of
214 * It also increments the kobject reference count to mark it busy and so would 217 * cpufreq_cpu_put() to balance its kobject reference counter properly.
215 * require a corresponding call to cpufreq_cpu_put() to decrement it back.
216 * If corresponding call cpufreq_cpu_put() isn't made, the policy wouldn't be
217 * freed as that depends on the kobj count.
218 *
219 * Return: A valid policy on success, otherwise NULL on failure.
220 */ 218 */
221struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu) 219struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
222{ 220{
@@ -243,12 +241,8 @@ struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
243EXPORT_SYMBOL_GPL(cpufreq_cpu_get); 241EXPORT_SYMBOL_GPL(cpufreq_cpu_get);
244 242
245/** 243/**
246 * cpufreq_cpu_put: Decrements the usage count of a policy 244 * cpufreq_cpu_put - Decrement kobject usage counter for cpufreq policy.
247 * 245 * @policy: cpufreq policy returned by cpufreq_cpu_get().
248 * @policy: policy earlier returned by cpufreq_cpu_get().
249 *
250 * This decrements the kobject reference count incremented earlier by calling
251 * cpufreq_cpu_get().
252 */ 246 */
253void cpufreq_cpu_put(struct cpufreq_policy *policy) 247void cpufreq_cpu_put(struct cpufreq_policy *policy)
254{ 248{