@@ -204,7 +204,7 @@ static u32 get_dynamic_power(struct cpufreq_cooling_device *cpufreq_cdev,
* complex code may be needed if experiments show that it's not
* accurate enough.
*
- * Return: 0 on success, -E* if getting the static power failed.
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
u32 *power)
@@ -247,9 +247,8 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
* milliwatts assuming 100% load. Store the calculated power in
* @power.
*
- * Return: 0 on success, -EINVAL if the cooling device state could not
- * be converted into a frequency or other -E* if there was an error
- * when calculating the static power.
+ * Return: 0 on success, -EINVAL if the cooling device state is bigger
+ * than maximum allowed.
*/
static int cpufreq_state2power(struct thermal_cooling_device *cdev,
unsigned long state, u32 *power)
@@ -279,15 +278,11 @@ static int cpufreq_state2power(struct thermal_cooling_device *cdev,
* Calculate a cooling device state for the cpus described by @cdev
* that would allow them to consume at most @power mW and store it in
* @state. Note that this calculation depends on external factors
- * such as the cpu load or the current static power. Calling this
- * function with the same power as input can yield different cooling
- * device states depending on those external factors.
- *
- * Return: 0 on success, -ENODEV if no cpus are online or -EINVAL if
- * the calculated frequency could not be converted to a valid state.
- * The latter should not happen unless the frequencies available to
- * cpufreq have changed since the initialization of the cpu cooling
- * device.
+ * such as the CPUs load. Calling this function with the same power
+ * as input can yield different cooling device states depending on those
+ * external factors.
+ *
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_power2state(struct thermal_cooling_device *cdev,
u32 power, unsigned long *state)
@@ -399,7 +394,7 @@ static unsigned int get_state_freq(struct cpufreq_cooling_device *cpufreq_cdev,
* Callback for the thermal cooling device to return the cpufreq
* max cooling state.
*
- * Return: 0 on success, an error code otherwise.
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_get_max_state(struct thermal_cooling_device *cdev,
unsigned long *state)
@@ -418,7 +413,7 @@ static int cpufreq_get_max_state(struct thermal_cooling_device *cdev,
* Callback for the thermal cooling device to return the cpufreq
* current cooling state.
*
- * Return: 0 on success, an error code otherwise.
+ * Return: 0 on success, this function doesn't fail.
*/
static int cpufreq_get_cur_state(struct thermal_cooling_device *cdev,
unsigned long *state)
@@ -485,7 +480,7 @@ static struct thermal_cooling_device_ops cpufreq_cooling_ops = {
* @em: Energy Model of the cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
+ * "cpufreq-%s". This API can support multiple instances of cpufreq
* cooling devices. It also gives the opportunity to link the cooling device
* with a device tree node, in order to bind it via the thermal DT code.
*
@@ -600,8 +595,8 @@ __cpufreq_cooling_register(struct device_node *np,
* @policy: cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
- * cooling devices.
+ * "cpufreq-%s". This API can support multiple instances of cpufreq cooling
+ * devices.
*
* Return: a valid struct thermal_cooling_device pointer on success,
* on failure, it returns a corresponding ERR_PTR().
@@ -618,17 +613,14 @@ EXPORT_SYMBOL_GPL(cpufreq_cooling_register);
* @policy: cpufreq policy
*
* This interface function registers the cpufreq cooling device with the name
- * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
- * cooling devices. Using this API, the cpufreq cooling device will be
- * linked to the device tree node provided.
+ * "cpufreq-%s". This API can support multiple instances of cpufreq cooling
+ * devices. Using this API, the cpufreq cooling device will be linked to the
+ * device tree node provided.
*
* Using this function, the cooling device will implement the power
- * extensions by using a simple cpu power model. The cpus must have
+ * extensions by using the Energy Model (if present). The cpus must have
* registered their OPPs using the OPP library.
*
- * It also takes into account, if property present in policy CPU node, the
- * static power consumed by the cpu.
- *
* Return: a valid struct thermal_cooling_device pointer on success,
* and NULL on failure.
*/
@@ -664,7 +656,7 @@ EXPORT_SYMBOL_GPL(of_cpufreq_cooling_register);
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
* @cdev: thermal cooling device pointer.
*
- * This interface function unregisters the "thermal-cpufreq-%x" cooling device.
+ * This interface function unregisters the "cpufreq-%x" cooling device.
*/
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
{
The code has moved and left some comments stale. Update them where there is a need. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> --- drivers/thermal/cpufreq_cooling.c | 44 +++++++++++++------------------ 1 file changed, 18 insertions(+), 26 deletions(-)