ide: various bugfixes

Hi Dave,

As discussed before, here is the rest of my private bugfix queue.

All patches contain an extra info about the testing they have received to make your decisions w.r.t. handling of them easier.

diffstat:

 drivers/ide/ide-devsets.c  |    2 -
 drivers/ide/ide-eh.c       |    2 -
 drivers/ide/ide-floppy.c   |    2 -
 drivers/ide/ide-io.c       |   70 ++++++++++++++++-----------------------------
 drivers/ide/ide-ioctls.c   |    8 +----
 drivers/ide/ide-iops.c     |   17 ++--------
 drivers/ide/ide-probe.c    |   31 +++++++++++++------
 drivers/ide/ide-proc.c     |   10 +-----
 drivers/ide/ide-taskfile.c |    9 +++++
 include/linux/ide.h        |    7 ++--
 10 files changed, 69 insertions(+), 89 deletions(-)