tree 6ffcf7e124123b82664cac9b36f4cd849b30b06e
parent 9009798df20f60fd53679b537fcb4df3460b7cf8
author Peter Tyser <ptyser@xes-inc.com> 1422991129 -0600
committer Simon Glass <sjg@chromium.org> 1423762529 -0700

dm: Prevent "demo hello" and "demo status" segfaults

Segfaults can occur when a mandatory argument is not provided to
"demo hello" and "demo status".  Eg:

   => demo hello
   Segmentation fault (core dumped)

Add a check to ensure all required arguments are provided.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Simon Glass <sjg@chromium.org>