As part of my work on the Linux Kernel Janitors project, cleaning up on
  functions which call misc_register and don't check for an error
  return, I would like to submit my patch to drivers/sgi/char/usema.c

  This module did not check the return code of misc_register. I found Uttam
  Pawar's patch for this on GeoCrawler
  (http://www.geocrawler.com/archives/3/9221/2002/8/0/9246517/), but it
  doesn't appear to have been applied. This patch basically does exactly the
  same as his, so all credit is due to him.