spin_lock_irq{save,restore} is incorrectly called here (the function can
sleep after acquring the lock).

done the necessary corrections and removed unwanted cli/sti.
Signed-off-by: NAmol Lad <amol@verismonetworks.com>
Signed-off-by: NKarsten Keil <kkeil@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>