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commit778e3979c5upstream. [WHY] This patch is a dupplicate implementation of 14bcf29b, which we are reverting due to a regression with kms_plane_cursor IGT tests. This reverts commit38e6f715b0. Reviewed-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Tested-by: George Zhang <George.zhang@amd.com> Signed-off-by: Ivan Lipski <ivlipski@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>