diff options
author | Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> | 2013-07-30 02:54:11 +0400 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-08-08 01:02:48 +0400 |
commit | e9698cc5d2749c5b74e137f94a95d7e505b097e8 (patch) | |
tree | 2687d73dd78e85412cec1104b2d6630e987ef921 /drivers/cpufreq/cpufreq.c | |
parent | 23d328994b548d6822b88fe7e1903652afc354e0 (diff) | |
download | linux-e9698cc5d2749c5b74e137f94a95d7e505b097e8.tar.xz |
cpufreq: Add helper to perform alloc/free of policy structure
Separate out the allocation of the cpufreq policy structure (along with
its error handling) to a helper function. This makes the code easier to
read and also helps with some upcoming code reorganization.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
-rw-r--r-- | drivers/cpufreq/cpufreq.c | 49 |
1 files changed, 34 insertions, 15 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 5b317b0db902..18e58c1bfd66 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -944,6 +944,37 @@ static int cpufreq_add_policy_cpu(unsigned int cpu, unsigned int sibling, } #endif +static struct cpufreq_policy *cpufreq_policy_alloc(void) +{ + struct cpufreq_policy *policy; + + policy = kzalloc(sizeof(*policy), GFP_KERNEL); + if (!policy) + return NULL; + + if (!alloc_cpumask_var(&policy->cpus, GFP_KERNEL)) + goto err_free_policy; + + if (!zalloc_cpumask_var(&policy->related_cpus, GFP_KERNEL)) + goto err_free_cpumask; + + return policy; + +err_free_cpumask: + free_cpumask_var(policy->cpus); +err_free_policy: + kfree(policy); + + return NULL; +} + +static void cpufreq_policy_free(struct cpufreq_policy *policy) +{ + free_cpumask_var(policy->related_cpus); + free_cpumask_var(policy->cpus); + kfree(policy); +} + /** * cpufreq_add_dev - add a CPU device * @@ -997,16 +1028,10 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) goto module_out; } - policy = kzalloc(sizeof(struct cpufreq_policy), GFP_KERNEL); + policy = cpufreq_policy_alloc(); if (!policy) goto nomem_out; - if (!alloc_cpumask_var(&policy->cpus, GFP_KERNEL)) - goto err_free_policy; - - if (!zalloc_cpumask_var(&policy->related_cpus, GFP_KERNEL)) - goto err_free_cpumask; - policy->cpu = cpu; policy->governor = CPUFREQ_DEFAULT_GOVERNOR; cpumask_copy(policy->cpus, cpumask_of(cpu)); @@ -1071,11 +1096,7 @@ err_out_unregister: err_set_policy_cpu: per_cpu(cpufreq_policy_cpu, cpu) = -1; - free_cpumask_var(policy->related_cpus); -err_free_cpumask: - free_cpumask_var(policy->cpus); -err_free_policy: - kfree(policy); + cpufreq_policy_free(policy); nomem_out: module_put(cpufreq_driver->owner); module_out: @@ -1199,9 +1220,7 @@ static int __cpufreq_remove_dev(struct device *dev, if (cpufreq_driver->exit) cpufreq_driver->exit(data); - free_cpumask_var(data->related_cpus); - free_cpumask_var(data->cpus); - kfree(data); + cpufreq_policy_free(data); } else { pr_debug("%s: removing link, cpu: %d\n", __func__, cpu); cpufreq_cpu_put(data); |