Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6

[cascardo/linux.git] / drivers / cpufreq / cpufreq.c

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 2d5d575..063b218 100644 (file)
--- 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);