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-rw-r--r--drivers/base/dd.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 135231239103..3f32df7ed373 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -189,14 +189,8 @@ int wait_for_device_probe(void)
189 * @drv: driver to bind a device to 189 * @drv: driver to bind a device to
190 * @dev: device to try to bind to the driver 190 * @dev: device to try to bind to the driver
191 * 191 *
192 * First, we call the bus's match function, if one present, which should 192 * This function returns -ENODEV if the device is not registered,
193 * compare the device IDs the driver supports with the device IDs of the 193 * 1 if the device is bound sucessfully and 0 otherwise.
194 * device. Note we don't do this ourselves because we don't know the
195 * format of the ID structures, nor what is to be considered a match and
196 * what is not.
197 *
198 * This function returns 1 if a match is found, -ENODEV if the device is
199 * not registered, and 0 otherwise.
200 * 194 *
201 * This function must be called with @dev->sem held. When called for a 195 * This function must be called with @dev->sem held. When called for a
202 * USB interface, @dev->parent->sem must be held as well. 196 * USB interface, @dev->parent->sem must be held as well.
@@ -207,21 +201,22 @@ int driver_probe_device(struct device_driver *drv, struct device *dev)
207 201
208 if (!device_is_registered(dev)) 202 if (!device_is_registered(dev))
209 return -ENODEV; 203 return -ENODEV;
210 if (drv->bus->match && !drv->bus->match(dev, drv))
211 goto done;
212 204
213 pr_debug("bus: '%s': %s: matched device %s with driver %s\n", 205 pr_debug("bus: '%s': %s: matched device %s with driver %s\n",
214 drv->bus->name, __func__, dev_name(dev), drv->name); 206 drv->bus->name, __func__, dev_name(dev), drv->name);
215 207
216 ret = really_probe(dev, drv); 208 ret = really_probe(dev, drv);
217 209
218done:
219 return ret; 210 return ret;
220} 211}
221 212
222static int __device_attach(struct device_driver *drv, void *data) 213static int __device_attach(struct device_driver *drv, void *data)
223{ 214{
224 struct device *dev = data; 215 struct device *dev = data;
216
217 if (!driver_match_device(drv, dev))
218 return 0;
219
225 return driver_probe_device(drv, dev); 220 return driver_probe_device(drv, dev);
226} 221}
227 222
@@ -274,7 +269,7 @@ static int __driver_attach(struct device *dev, void *data)
274 * is an error. 269 * is an error.
275 */ 270 */
276 271
277 if (drv->bus->match && !drv->bus->match(dev, drv)) 272 if (!driver_match_device(drv, dev))
278 return 0; 273 return 0;
279 274
280 if (dev->parent) /* Needed for USB */ 275 if (dev->parent) /* Needed for USB */