[ALSA] unregister platform device again if probe was unsuccessful
[linux-3.10.git] / sound / drivers / mtpav.c
index b7a0b42..474eed0 100644 (file)
@@ -770,11 +770,15 @@ static int __init alsa_card_mtpav_init(void)
                return err;
 
        device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
-       if (IS_ERR(device)) {
-               platform_driver_unregister(&snd_mtpav_driver);
-               return PTR_ERR(device);
-       }
-       return 0;
+       if (!IS_ERR(device)) {
+               if (platform_get_drvdata(device))
+                       return 0;
+               platform_device_unregister(device);
+               err = -ENODEV;
+       } else
+               err = PTR_ERR(device);
+       platform_driver_unregister(&snd_mtpav_driver);
+       return err;
 }
 
 static void __exit alsa_card_mtpav_exit(void)