Most of the ISDN ->readstat() implementations needed to check
copy_to_user() and put_user() return values.
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>