From: Arnd Bergmann <arnd@arndb.de>

Lots of trivial changes to make sparse happy on s390 arch code, mostly
__user annotations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>