[AMD tahiti xt] amd-staging-drm-next broken since linux 5.3.0-rc3 rebase

Submitted by Sylvain BERTRAND

Assigned to Default DRI bug account

Link to original bug (#111792)

Description

got the rebased amd-staging-drm-next branch today, configured and compiled linux, xorg hangs while probing card0. See provided logs.

yes, I can bisect.