We get a lot of patches in staging that move shift functions around
without changing the code.  For example:
http://marc.info/?l=linux-driver-devel&m=134075825327894&q=raw

I've written a perl script to help review them.  If you take that
example diff then it looks like this:

$ cat patch.txt | diffstat
 cb_pcidas.c |  494 ++++++++++++++++++++++++++----------------------------------
  1 file changed, 219 insertions(+), 275 deletions(-)
$ cat patch.txt | ./move_rev.pl | diffstat
 cb_pcidas.c |   63 ------------------------------------------------------------
  1 file changed, 63 deletions(-)
$

63 lines of deleted code is much quicker to review.  :)

The script is attached.

regards,
dan carpenter