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[PATCH] usbaudio: prevent oops & dead keyboard on usb unplugging while the device is being used 

Without this patch, some usb kobjects, which are parents to the usx2y's
kobjects can be freed before the usx2y's.  This led to an oops in
get_kobj_path_length() and a dead keyboard, when the usx2y's kobjects
were freed.  The patch ensures the correct sequence.  Tested ok on
kernel 2.6.12-rc2.

Present in ALSA cvs

Signed-off-by: Karsten Wiese <annabellesgarden@yahoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Karsten Wiese 2005-06-14 09:54:55 -07:00 committed by Linus Torvalds
parent 9a47696970
commit efa93dbedd
1 changed files with 1 additions and 1 deletions
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2
sound/usb/usbaudio.c
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@ -3289,7 +3289,7 @@ static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
}
usb_chip[chip->index] = NULL;
up(&register_mutex);
snd_card_free_in_thread(card);
snd_card_free(card);
} else {
up(&register_mutex);
}