Use wait_event_interruptible() instead of the deprecated
interruptible_sleep_on().  The replacements were all straight-forward as every
sleep was conditionally-looped.  Patch is compile-tested (still warns about
{save,restore}_flags(),cli()).
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>