[ALSA] usbaudio - Fix kobject_add() error at reconnection

Fixed the error from kobject_add() at reconnection the usb audio device.
This happens when an app keeps opening a device while the device is
replugged, due to the confliction of the internal bookkept index and
the really empty slot.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 1 insertions, 1 deletions

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 5f160eebd15c..19bdcc74c96c 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -3286,6 +3286,7 @@ static void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
 
 static int snd_usb_audio_free(struct snd_usb_audio *chip)
 {
+        usb_chip[chip->index] = NULL;
         kfree(chip);
         return 0;
 }
@@ -3547,7 +3548,6 @@ static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
                 list_for_each(p, &chip->mixer_list) {
                         snd_usb_mixer_disconnect(p);
                 }
-                usb_chip[chip->index] = NULL;
                 mutex_unlock(&register_mutex);
                 snd_card_free_when_closed(card);
         } else {