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-rw-r--r--drivers/thermal/cpu_cooling.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index b8b8a1ef85ed..084ef0096cc9 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -118,8 +118,14 @@ enum cpufreq_cooling_property {
118 GET_MAXL, 118 GET_MAXL,
119}; 119};
120 120
121/* 121/**
122 * this is the common function to 122 * get_property - fetch a property of interest for a give cpu.
123 * @cpu: cpu for which the property is required
124 * @input: query parameter
125 * @output: query return
126 * @property: type of query (frequency, level, max level)
127 *
128 * This is the common function to
123 * 1. get maximum cpu cooling states 129 * 1. get maximum cpu cooling states
124 * 2. translate frequency to cooling state 130 * 2. translate frequency to cooling state
125 * 3. translate cooling state to frequency 131 * 3. translate cooling state to frequency
@@ -128,7 +134,9 @@ enum cpufreq_cooling_property {
128 * a) reduce duplicate code as most of the code can be shared. 134 * a) reduce duplicate code as most of the code can be shared.
129 * b) make sure the logic is consistent when translating between 135 * b) make sure the logic is consistent when translating between
130 * cooling states and frequencies. 136 * cooling states and frequencies.
131*/ 137 *
138 * Return: 0 on success, -EINVAL when invalid parameters are passed.
139 */
132static int get_property(unsigned int cpu, unsigned long input, 140static int get_property(unsigned int cpu, unsigned long input,
133 unsigned int* output, enum cpufreq_cooling_property property) 141 unsigned int* output, enum cpufreq_cooling_property property)
134{ 142{