JQL challenge - return all issues that are parents of sub-tasks having status = Done

[Jack Brickey]

I have sub-task issue type called Immediate Action. This is a temporary solution (sub-task) to the long term solution (parent). I want to add a gadget to my dashborard that shows all current temporary solutions that are awaiting the long-term solution. So something like this...

project = acme AND issuetype = "Immediate Action" AND status=Done AND parent-status != Done

so how to achieve the parent-status piece?

to make it more challenging.... without a plugin. :-)