Update Linux 3.0.50 -> Linux 3.0.51

floppy: do put_disk on current dr if blk_init_queue fails
 If blk_init_queue fails, we do not call put_disk on the current dr
   (dr is decremented first in teh error handling loop).

mm: fix XFS oops due to dirty pages without buffers on s390

drm/nouveau: slience modesetting spam on pre-gf8 chipsets