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path: root/drivers/base/dd.c
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-rw-r--r--drivers/base/dd.c38
1 files changed, 19 insertions, 19 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index ee95c76bfd3d..c89291f8a16b 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -85,7 +85,7 @@ static void driver_sysfs_remove(struct device *dev)
85 * for before calling this. (It is ok to call with no other effort 85 * for before calling this. (It is ok to call with no other effort
86 * from a driver's probe() method.) 86 * from a driver's probe() method.)
87 * 87 *
88 * This function must be called with @dev->sem held. 88 * This function must be called with the device lock held.
89 */ 89 */
90int device_bind_driver(struct device *dev) 90int device_bind_driver(struct device *dev)
91{ 91{
@@ -190,8 +190,8 @@ EXPORT_SYMBOL_GPL(wait_for_device_probe);
190 * This function returns -ENODEV if the device is not registered, 190 * This function returns -ENODEV if the device is not registered,
191 * 1 if the device is bound successfully and 0 otherwise. 191 * 1 if the device is bound successfully and 0 otherwise.
192 * 192 *
193 * This function must be called with @dev->sem held. When called for a 193 * This function must be called with @dev lock held. When called for a
194 * USB interface, @dev->parent->sem must be held as well. 194 * USB interface, @dev->parent lock must be held as well.
195 */ 195 */
196int driver_probe_device(struct device_driver *drv, struct device *dev) 196int driver_probe_device(struct device_driver *drv, struct device *dev)
197{ 197{
@@ -233,13 +233,13 @@ static int __device_attach(struct device_driver *drv, void *data)
233 * 0 if no matching driver was found; 233 * 0 if no matching driver was found;
234 * -ENODEV if the device is not registered. 234 * -ENODEV if the device is not registered.
235 * 235 *
236 * When called for a USB interface, @dev->parent->sem must be held. 236 * When called for a USB interface, @dev->parent lock must be held.
237 */ 237 */
238int device_attach(struct device *dev) 238int device_attach(struct device *dev)
239{ 239{
240 int ret = 0; 240 int ret = 0;
241 241
242 down(&dev->sem); 242 device_lock(dev);
243 if (dev->driver) { 243 if (dev->driver) {
244 ret = device_bind_driver(dev); 244 ret = device_bind_driver(dev);
245 if (ret == 0) 245 if (ret == 0)
@@ -253,7 +253,7 @@ int device_attach(struct device *dev)
253 ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach); 253 ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach);
254 pm_runtime_put_sync(dev); 254 pm_runtime_put_sync(dev);
255 } 255 }
256 up(&dev->sem); 256 device_unlock(dev);
257 return ret; 257 return ret;
258} 258}
259EXPORT_SYMBOL_GPL(device_attach); 259EXPORT_SYMBOL_GPL(device_attach);
@@ -276,13 +276,13 @@ static int __driver_attach(struct device *dev, void *data)
276 return 0; 276 return 0;
277 277
278 if (dev->parent) /* Needed for USB */ 278 if (dev->parent) /* Needed for USB */
279 down(&dev->parent->sem); 279 device_lock(dev->parent);
280 down(&dev->sem); 280 device_lock(dev);
281 if (!dev->driver) 281 if (!dev->driver)
282 driver_probe_device(drv, dev); 282 driver_probe_device(drv, dev);
283 up(&dev->sem); 283 device_unlock(dev);
284 if (dev->parent) 284 if (dev->parent)
285 up(&dev->parent->sem); 285 device_unlock(dev->parent);
286 286
287 return 0; 287 return 0;
288} 288}
@@ -303,8 +303,8 @@ int driver_attach(struct device_driver *drv)
303EXPORT_SYMBOL_GPL(driver_attach); 303EXPORT_SYMBOL_GPL(driver_attach);
304 304
305/* 305/*
306 * __device_release_driver() must be called with @dev->sem held. 306 * __device_release_driver() must be called with @dev lock held.
307 * When called for a USB interface, @dev->parent->sem must be held as well. 307 * When called for a USB interface, @dev->parent lock must be held as well.
308 */ 308 */
309static void __device_release_driver(struct device *dev) 309static void __device_release_driver(struct device *dev)
310{ 310{
@@ -343,7 +343,7 @@ static void __device_release_driver(struct device *dev)
343 * @dev: device. 343 * @dev: device.
344 * 344 *
345 * Manually detach device from driver. 345 * Manually detach device from driver.
346 * When called for a USB interface, @dev->parent->sem must be held. 346 * When called for a USB interface, @dev->parent lock must be held.
347 */ 347 */
348void device_release_driver(struct device *dev) 348void device_release_driver(struct device *dev)
349{ 349{
@@ -352,9 +352,9 @@ void device_release_driver(struct device *dev)
352 * within their ->remove callback for the same device, they 352 * within their ->remove callback for the same device, they
353 * will deadlock right here. 353 * will deadlock right here.
354 */ 354 */
355 down(&dev->sem); 355 device_lock(dev);
356 __device_release_driver(dev); 356 __device_release_driver(dev);
357 up(&dev->sem); 357 device_unlock(dev);
358} 358}
359EXPORT_SYMBOL_GPL(device_release_driver); 359EXPORT_SYMBOL_GPL(device_release_driver);
360 360
@@ -381,13 +381,13 @@ void driver_detach(struct device_driver *drv)
381 spin_unlock(&drv->p->klist_devices.k_lock); 381 spin_unlock(&drv->p->klist_devices.k_lock);
382 382
383 if (dev->parent) /* Needed for USB */ 383 if (dev->parent) /* Needed for USB */
384 down(&dev->parent->sem); 384 device_lock(dev->parent);
385 down(&dev->sem); 385 device_lock(dev);
386 if (dev->driver == drv) 386 if (dev->driver == drv)
387 __device_release_driver(dev); 387 __device_release_driver(dev);
388 up(&dev->sem); 388 device_unlock(dev);
389 if (dev->parent) 389 if (dev->parent)
390 up(&dev->parent->sem); 390 device_unlock(dev->parent);
391 put_device(dev); 391 put_device(dev);
392 } 392 }
393} 393}