* - All sleeps use a timeout of DIGI_RETRY_TIMEOUT before looping to
* recheck the condition they are sleeping on. This is defensive,
* in case a wake up is lost.
-* - Following Documentation/DocBook/kernel-locking.pdf no spin locks
+* - Following Documentation/DocBook/kernel-locking.tmpl no spin locks
* are held when calling copy_to/from_user or printk.
*/