commit 9eb70e68f38bbc5996a2193e7b7dc0b5487a08cb
author Takashi Iwai <tiwai@suse.de> Thu Apr 17 12:53:26 2008 +0200
committer Takashi Iwai <tiwai@suse.de> Thu Apr 24 12:00:39 2008 +0200
tree f4079da04cd967a58e95b77b44a00e914d129f5f
parent f18638dcf0c481eca2430206ebcdc7295aec8623

[ALSA] usb-audio - Fix race in reconnection

Fix the race at reconnection of the device.
The disconnected usb_chip[] must be cleared before the next probe
call properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/usbaudio.c

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 7b3bcf1..410be4a 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -3424,7 +3424,6 @@
 
 static int snd_usb_audio_free(struct snd_usb_audio *chip)
 {
-	usb_chip[chip->index] = NULL;
 	kfree(chip);
 	return 0;
 }
@@ -3689,6 +3688,7 @@
 		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 {