cf78580a34
Update function headers to clarify the contract of each function and improve readability. Add NULL checks to all functions that take a pointer as an argument. Add return status to functions that may need to return early due to invalid input. Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Dandan Bi <dandan.bi@intel.com> Signed-off-by: Taylor Beebe <taylor.d.beebe@gmail.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>