cpufreq: powernv: Remove flag use-case of policy->driver_data

[linux-2.6-block.git] / drivers / cpufreq / powernv-cpufreq.c

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 39ac78c94be0f3c191aaf5868cd3c2154ab5fb59..e2e221904d2554ea3f22394162464b8fb6f8da49 100644 (file)
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -455,13 +455,15 @@ static int powernv_cpufreq_target_index(struct cpufreq_policy *policy,
 static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
 {
        int base, i;
+       struct kernfs_node *kn;
 
        base = cpu_first_thread_sibling(policy->cpu);
 
        for (i = 0; i < threads_per_core; i++)
                cpumask_set_cpu(base + i, policy->cpus);
 
-       if (!policy->driver_data) {
+       kn = kernfs_find_and_get(policy->kobj.sd, throttle_attr_grp.name);
+       if (!kn) {
                int ret;
 
                ret = sysfs_create_group(&policy->kobj, &throttle_attr_grp);
@@ -470,11 +472,8 @@ static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
                                policy->cpu);
                        return ret;
                }
-               /*
-                * policy->driver_data is used as a flag for one-time
-                * creation of throttle sysfs files.
-                */
-               policy->driver_data = policy;
+       } else {
+               kernfs_put(kn);
        }
        return cpufreq_table_validate_and_show(policy, powernv_freqs);
 }