compat: add IS_ERR_OR_NULL() compat-2011-09-28
-rw-r--r-- 18693 COPYRIGHT
-rw-r--r-- 2235 Makefile
drwxr-xr-x - compat
drwxr-xr-x - include
drwxr-xr-x - scripts
drwxr-xr-x - udev