--- linux-2.6.25.12/drivers/usb/class/cdc-acm.c	2008-07-24 18:14:20.000000000 +0200
+++ linux-2.6.25.12.new/drivers/usb/class/cdc-acm.c	2008-08-05 21:39:35.000000000 +0200
@@ -531,8 +531,8 @@
 	tasklet_schedule(&acm->urb_task);
 
 done:
-err_out:
 	mutex_unlock(&acm->mutex);
+err_out:
 	mutex_unlock(&open_mutex);
 	return rv;