print_usage () {
cat <<- END_OF_HELP
- usage: $(basename $0) [-q] [-v] [-nX|-r range|patch1 [patch2] ...]]
+ usage: $(basename $0) [-h] [-q] [-v] [-nX|-r range|patch1 [patch2] ...]
Run Linux kernel checkpatch.pl with DPDK options.
The environment variable DPDK_CHECKPATCH_PATH must be set.