https://bugzilla.kernel.org/show_bug.cgi?id=62721
--- Comment #12 from Andrew Dorney andrewd18@gmail.com --- (In reply to Alex Deucher from comment #11)
This bug is about a GPU hang on an r5xx board. You issue is mostly likely completely unrelated. You issue looks like it may be a duplicate of bug 68571.
Indeed. My apologies.