[PATCH] parport: bring back an unused phase for ppdev ioctl

Earlier fix removed unused phase, but that changed the values for other
phases.  Since these are exposed to userspace through ppdev, it is safer
not to change them.  Restore the unused phase value.

Signed-off-by: Marko Kohtala <marko.kohtala@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/parport.h

@@ -236,12 +236,14 @@ struct pardevice {
 
 /* IEEE1284 information */
 
-/* IEEE1284 phases */
+/* IEEE1284 phases. These are exposed to userland through ppdev IOCTL
+ * PP[GS]ETPHASE, so do not change existing values. */
 enum ieee1284_phase {
 	IEEE1284_PH_FWD_DATA,
 	IEEE1284_PH_FWD_IDLE,
 	IEEE1284_PH_TERMINATE,
 	IEEE1284_PH_NEGOTIATION,
+	IEEE1284_PH_HBUSY_DNA,
 	IEEE1284_PH_REV_IDLE,
 	IEEE1284_PH_HBUSY_DAVAIL,
 	IEEE1284_PH_REV_DATA,