Does a Canadian visiting mainland China need a HK visa to transit thru HK airport on the way home?

I'm a Canadian citizen with a Canadian passport, and will be flying to Bejing. but returning to Canada through Hong Kong. So I'll be entering HK from mainland. I will be getting an entry permit for mainland. But do I need any type to enter HK on transit back to Canada? I'll be staying just a few hours in HK.