PREfast for custom built drivers.

Please don't post solutions to chat with people asking or answering. The messages are not always sorted by date, so it can be a bit difficult to follow them correctly.
The best option is to use the "Have a question or comment?" (or the tiny "reply" on another comment). Another advantage is, that the person you write to will get a notification, otherwise it could be that he/she doesn't see your additional message.