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path: root/drivers/i2c/chips/max6875.c
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Diffstat (limited to 'drivers/i2c/chips/max6875.c')
-rw-r--r--drivers/i2c/chips/max6875.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c
index 88d2ddee4490..76645c142977 100644
--- a/drivers/i2c/chips/max6875.c
+++ b/drivers/i2c/chips/max6875.c
@@ -199,8 +199,7 @@ static int max6875_detect(struct i2c_adapter *adapter, int address, int kind)
199 mutex_init(&data->update_lock); 199 mutex_init(&data->update_lock);
200 200
201 /* Init fake client data */ 201 /* Init fake client data */
202 /* set the client data to the i2c_client so that it will get freed */ 202 i2c_set_clientdata(fake_client, NULL);
203 i2c_set_clientdata(fake_client, fake_client);
204 fake_client->addr = address | 1; 203 fake_client->addr = address | 1;
205 fake_client->adapter = adapter; 204 fake_client->adapter = adapter;
206 fake_client->driver = &max6875_driver; 205 fake_client->driver = &max6875_driver;
@@ -214,13 +213,17 @@ static int max6875_detect(struct i2c_adapter *adapter, int address, int kind)
214 goto exit_kfree2; 213 goto exit_kfree2;
215 214
216 if ((err = i2c_attach_client(fake_client)) != 0) 215 if ((err = i2c_attach_client(fake_client)) != 0)
217 goto exit_detach; 216 goto exit_detach1;
218 217
219 sysfs_create_bin_file(&real_client->dev.kobj, &user_eeprom_attr); 218 err = sysfs_create_bin_file(&real_client->dev.kobj, &user_eeprom_attr);
219 if (err)
220 goto exit_detach2;
220 221
221 return 0; 222 return 0;
222 223
223exit_detach: 224exit_detach2:
225 i2c_detach_client(fake_client);
226exit_detach1:
224 i2c_detach_client(real_client); 227 i2c_detach_client(real_client);
225exit_kfree2: 228exit_kfree2:
226 kfree(fake_client); 229 kfree(fake_client);
@@ -229,14 +232,24 @@ exit_kfree1:
229 return err; 232 return err;
230} 233}
231 234
235/* Will be called for both the real client and the fake client */
232static int max6875_detach_client(struct i2c_client *client) 236static int max6875_detach_client(struct i2c_client *client)
233{ 237{
234 int err; 238 int err;
239 struct max6875_data *data = i2c_get_clientdata(client);
240
241 /* data is NULL for the fake client */
242 if (data)
243 sysfs_remove_bin_file(&client->dev.kobj, &user_eeprom_attr);
235 244
236 err = i2c_detach_client(client); 245 err = i2c_detach_client(client);
237 if (err) 246 if (err)
238 return err; 247 return err;
239 kfree(i2c_get_clientdata(client)); 248
249 if (data) /* real client */
250 kfree(data);
251 else /* fake client */
252 kfree(client);
240 return 0; 253 return 0;
241} 254}
242 255