Replaced usb_kill_usb for usb_unlink_usb
(wait until urb to fully stop require USB core to put the calling process to sleep).
Oops:
http://www.kerneloops.org/raw.php?rawid=71799&msgid=
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
 
        dprintk("Stopping isoc\n");
        for (i = 0; i < EM28XX_AUDIO_BUFS; i++) {
-               usb_kill_urb(dev->adev->urb[i]);
+               usb_unlink_urb(dev->adev->urb[i]);
                usb_free_urb(dev->adev->urb[i]);
                dev->adev->urb[i] = NULL;
        }