This bug is found when running IGT tests.

For CRTCs that doesn't support rotation should still return
DRM_MODE_ROTATE_0. Since both OVL and OVL adaptor on MTK chip
doesn't support rotation, return the capability of the
hardware accordingly.

Hsiao Chien Sung (1):
  drm/mediatek: Fix errors when reporting rotation capability

 drivers/gpu/drm/mediatek/mtk_disp_drv.h         | 1 +
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c         | 8 +-------
 drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 5 +++++
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c     | 1 +
 drivers/gpu/drm/mediatek/mtk_drm_plane.c        | 2 +-
 5 files changed, 9 insertions(+), 8 deletions(-)

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2.18.0