i2c: Do not use device name after device_unregister

dev_dbg outputs dev_name, which is released with device_unregister. This bug
resulted in output like this:

i2c Xy2�0: adapter [SMBus I801 adapter at 1880] unregistered

The right output would be:
i2c i2c-0: adapter [SMBus I801 adapter at 1880] unregistered

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index d610e995bbfd..10be7b5fbe97 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -843,6 +843,9 @@ int i2c_del_adapter(struct i2c_adapter *adap)
                                  adap->dev.parent);
 #endif
 
+        /* device name is gone after device_unregister */
+        dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
+
         /* clean up the sysfs representation */
         init_completion(&adap->dev_released);
         device_unregister(&adap->dev);
@@ -855,8 +858,6 @@ int i2c_del_adapter(struct i2c_adapter *adap)
         idr_remove(&i2c_adapter_idr, adap->nr);
         mutex_unlock(&core_lock);
 
-        dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
-
         /* Clear the device structure in case this adapter is ever going to be
            added again */
         memset(&adap->dev, 0, sizeof(adap->dev));