Merge commit 'v2.6.34-rc6' into x86/cpu

[~andy/linux] / drivers / cpufreq / cpufreq.c

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index e02e4174c2c8f6d4e7bcc70dc86c03e19547e8a8..063b2184caf5506fc1e1a83e1cd6c8dc6f22b6c3 100644 (file)
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1101,6 +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;
@@ -1129,10 +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
@@ -1169,7 +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);
                }
        }
@@ -1180,19 +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);