dasd driver changes:
 - Free memory returned by read_conf_data.
 - Add warning message if use_diag is specified with a non-CMS
   formatted device.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>