On 01/17/2012 05:07 AM, Ben Hutchings wrote:

Signed-off-by: Linus Torvalds<torvalds@linux-foundation.org>
[bwh: Backport to 2.6.32 - ENOIOCTLCMD does not get converted to
  ENOTTY, so we must return ENOTTY directly]
Signed-off-by: Ben Hutchings<redacted>

Have you tested 32-on-64?  I already did this change in the version for 
3.2 stable, but sd_compat_ioctl has to keep ENOIOCTLCMD:

[ Cherry picked from 3ed4e7ba4be8c72051d87dcb2dec279d97a18d41

  Changes with respect to 3.3: return -ENOTTY from scsi_verify_blk_ioctl
  and -ENOIOCTLCMD from sd_compat_ioctl. ]

Paolo