[PATCH v2] thermal: cpu_cooling: Remove usage of devm functions

Vaishali Thakkar
2015-08-20T16:14:07Z

In the function cpufreq_get_requested_power, the memory allocated
for load_cpu is live within the function only. And after the
allocation it is immediately freed with devm_kfree. There is no
need to allocate memory for load_cpu with devm function so replace
devm_kcalloc with kcalloc and devm_kfree with kfree.

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
---
Changes since v1:
- Introduce new label based on Viresh Kumar's suggestion
---
drivers/thermal/cpu_cooling.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 620dcd4..7027923 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -584,8 +584,7 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
if (trace_thermal_power_cpu_get_power_enabled()) {
u32 ncpus = cpumask_weight(&cpufreq_device->allowed_cpus);

- load_cpu = devm_kcalloc(&cdev->device, ncpus, sizeof(*load_cpu),
- GFP_KERNEL);
+ load_cpu = kcalloc(ncpus, sizeof(*load_cpu), GFP_KERNEL);
}

for_each_cpu(cpu, &cpufreq_device->allowed_cpus) {
@@ -607,22 +606,21 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,

dynamic_power = get_dynamic_power(cpufreq_device, freq);
ret = get_static_power(cpufreq_device, tz, freq, &static_power);
- if (ret) {
- if (load_cpu)
- devm_kfree(&cdev->device, load_cpu);
- return ret;
- }
+ if (ret)
+ goto free;

- if (load_cpu) {
+ if (load_cpu)
trace_thermal_power_cpu_get_power(
&cpufreq_device->allowed_cpus,
freq, load_cpu, i, dynamic_power, static_power);

- devm_kfree(&cdev->device, load_cpu);
- }
-
*power = static_power + dynamic_power;
return 0;
+
+free:
+ kfree(load_cpu);
+
+ return ret;
}

/**
--
1.9.1