diff options
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 59 |
1 files changed, 28 insertions, 31 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2d5d575e889..063b2184caf 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -662,32 +662,20 @@ static ssize_t show_bios_limit(struct cpufreq_policy *policy, char *buf) return sprintf(buf, "%u\n", policy->cpuinfo.max_freq); } -#define define_one_ro(_name) \ -static struct freq_attr _name = \ -__ATTR(_name, 0444, show_##_name, NULL) - -#define define_one_ro0400(_name) \ -static struct freq_attr _name = \ -__ATTR(_name, 0400, show_##_name, NULL) - -#define define_one_rw(_name) \ -static struct freq_attr _name = \ -__ATTR(_name, 0644, show_##_name, store_##_name) - -define_one_ro0400(cpuinfo_cur_freq); -define_one_ro(cpuinfo_min_freq); -define_one_ro(cpuinfo_max_freq); -define_one_ro(cpuinfo_transition_latency); -define_one_ro(scaling_available_governors); -define_one_ro(scaling_driver); -define_one_ro(scaling_cur_freq); -define_one_ro(bios_limit); -define_one_ro(related_cpus); -define_one_ro(affected_cpus); -define_one_rw(scaling_min_freq); -define_one_rw(scaling_max_freq); -define_one_rw(scaling_governor); -define_one_rw(scaling_setspeed); +cpufreq_freq_attr_ro_perm(cpuinfo_cur_freq, 0400); +cpufreq_freq_attr_ro(cpuinfo_min_freq); +cpufreq_freq_attr_ro(cpuinfo_max_freq); +cpufreq_freq_attr_ro(cpuinfo_transition_latency); +cpufreq_freq_attr_ro(scaling_available_governors); +cpufreq_freq_attr_ro(scaling_driver); +cpufreq_freq_attr_ro(scaling_cur_freq); +cpufreq_freq_attr_ro(bios_limit); +cpufreq_freq_attr_ro(related_cpus); +cpufreq_freq_attr_ro(affected_cpus); +cpufreq_freq_attr_rw(scaling_min_freq); +cpufreq_freq_attr_rw(scaling_max_freq); +cpufreq_freq_attr_rw(scaling_governor); +cpufreq_freq_attr_rw(scaling_setspeed); static struct attribute *default_attrs[] = { &cpuinfo_min_freq.attr, @@ -1113,6 +1101,8 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev) unsigned int cpu = sys_dev->id; unsigned long flags; struct cpufreq_policy *data; + struct kobject *kobj; + struct completion *cmp; #ifdef CONFIG_SMP struct sys_device *cpu_sys_dev; unsigned int j; @@ -1141,10 +1131,11 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev) dprintk("removing link\n"); cpumask_clear_cpu(cpu, data->cpus); spin_unlock_irqrestore(&cpufreq_driver_lock, flags); - sysfs_remove_link(&sys_dev->kobj, "cpufreq"); + kobj = &sys_dev->kobj; cpufreq_cpu_put(data); cpufreq_debug_enable_ratelimit(); unlock_policy_rwsem_write(cpu); + sysfs_remove_link(kobj, "cpufreq"); return 0; } #endif @@ -1181,7 +1172,10 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev) data->governor->name, CPUFREQ_NAME_LEN); #endif cpu_sys_dev = get_cpu_sysdev(j); - sysfs_remove_link(&cpu_sys_dev->kobj, "cpufreq"); + kobj = &cpu_sys_dev->kobj; + unlock_policy_rwsem_write(cpu); + sysfs_remove_link(kobj, "cpufreq"); + lock_policy_rwsem_write(cpu); cpufreq_cpu_put(data); } } @@ -1192,19 +1186,22 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev) if (cpufreq_driver->target) __cpufreq_governor(data, CPUFREQ_GOV_STOP); - kobject_put(&data->kobj); + kobj = &data->kobj; + cmp = &data->kobj_unregister; + unlock_policy_rwsem_write(cpu); + kobject_put(kobj); /* we need to make sure that the underlying kobj is actually * not referenced anymore by anybody before we proceed with * unloading. */ dprintk("waiting for dropping of refcount\n"); - wait_for_completion(&data->kobj_unregister); + wait_for_completion(cmp); dprintk("wait complete\n"); + lock_policy_rwsem_write(cpu); if (cpufreq_driver->exit) cpufreq_driver->exit(data); - unlock_policy_rwsem_write(cpu); free_cpumask_var(data->related_cpus); |