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path: root/drivers/cpuidle/cpuidle.c
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Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
-rw-r--r--drivers/cpuidle/cpuidle.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 12fdd3987a36..199488576a05 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -156,7 +156,7 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
156 156
157 if (dev->enabled) 157 if (dev->enabled)
158 return 0; 158 return 0;
159 if (!cpuidle_curr_driver || !cpuidle_curr_governor) 159 if (!cpuidle_get_driver() || !cpuidle_curr_governor)
160 return -EIO; 160 return -EIO;
161 if (!dev->state_count) 161 if (!dev->state_count)
162 return -EINVAL; 162 return -EINVAL;
@@ -207,7 +207,7 @@ void cpuidle_disable_device(struct cpuidle_device *dev)
207{ 207{
208 if (!dev->enabled) 208 if (!dev->enabled)
209 return; 209 return;
210 if (!cpuidle_curr_driver || !cpuidle_curr_governor) 210 if (!cpuidle_get_driver() || !cpuidle_curr_governor)
211 return; 211 return;
212 212
213 dev->enabled = 0; 213 dev->enabled = 0;
@@ -271,10 +271,11 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
271{ 271{
272 int ret; 272 int ret;
273 struct sys_device *sys_dev = get_cpu_sysdev((unsigned long)dev->cpu); 273 struct sys_device *sys_dev = get_cpu_sysdev((unsigned long)dev->cpu);
274 struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
274 275
275 if (!sys_dev) 276 if (!sys_dev)
276 return -EINVAL; 277 return -EINVAL;
277 if (!try_module_get(cpuidle_curr_driver->owner)) 278 if (!try_module_get(cpuidle_driver->owner))
278 return -EINVAL; 279 return -EINVAL;
279 280
280 init_completion(&dev->kobj_unregister); 281 init_completion(&dev->kobj_unregister);
@@ -284,7 +285,7 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
284 per_cpu(cpuidle_devices, dev->cpu) = dev; 285 per_cpu(cpuidle_devices, dev->cpu) = dev;
285 list_add(&dev->device_list, &cpuidle_detected_devices); 286 list_add(&dev->device_list, &cpuidle_detected_devices);
286 if ((ret = cpuidle_add_sysfs(sys_dev))) { 287 if ((ret = cpuidle_add_sysfs(sys_dev))) {
287 module_put(cpuidle_curr_driver->owner); 288 module_put(cpuidle_driver->owner);
288 return ret; 289 return ret;
289 } 290 }
290 291
@@ -325,6 +326,7 @@ EXPORT_SYMBOL_GPL(cpuidle_register_device);
325void cpuidle_unregister_device(struct cpuidle_device *dev) 326void cpuidle_unregister_device(struct cpuidle_device *dev)
326{ 327{
327 struct sys_device *sys_dev = get_cpu_sysdev((unsigned long)dev->cpu); 328 struct sys_device *sys_dev = get_cpu_sysdev((unsigned long)dev->cpu);
329 struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
328 330
329 if (dev->registered == 0) 331 if (dev->registered == 0)
330 return; 332 return;
@@ -340,7 +342,7 @@ void cpuidle_unregister_device(struct cpuidle_device *dev)
340 342
341 cpuidle_resume_and_unlock(); 343 cpuidle_resume_and_unlock();
342 344
343 module_put(cpuidle_curr_driver->owner); 345 module_put(cpuidle_driver->owner);
344} 346}
345 347
346EXPORT_SYMBOL_GPL(cpuidle_unregister_device); 348EXPORT_SYMBOL_GPL(cpuidle_unregister_device);