tree a2e74bcf3879a0f0b7e38907d40be86aea21ef6a
parent bda5e3e97ffe80c5a793383df5681d3581d46ac8
author Michel Dänzer <michel.daenzer@amd.com> 1436433864 +0900
committer Alex Deucher <alexander.deucher@amd.com> 1437064784 -0400

drm/amdgpu/dce8: Re-set VBLANK interrupt state when enabling a CRTC

Something (ATOM BIOS?) seems to be clobbering the LB_INTERRUPT_MASK
register while the CRTC is off, which caused e.g. glxgears or
gnome-shell to hang after a modeset.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>