releases/5.0.15/drm-amd-display-fix-cursor-black-issue.patch

   1 From 2d0f06f33938395f6eb92bc74097838998676e46 Mon Sep 17 00:00:00 2001
   2 From: tiancyin <tianci.yin@amd.com>
   3 Date: Mon, 1 Apr 2019 10:15:31 +0800
   4 Subject: drm/amd/display: fix cursor black issue
   5
   6 [ Upstream commit c1cefe115d1cdc460014483319d440b2f0d07c68 ]
   7
   8 [Why]
   9 the member sdr_white_level of struct dc_cursor_attributes was not
  10 initialized, then the random value result that
  11 dcn10_set_cursor_sdr_white_level() set error hw_scale value 0x20D9(normal
  12 value is 0x3c00), this cause the black cursor issue.
  13
  14 [how]
  15 just initilize the obj of struct dc_cursor_attributes to zero to avoid
  16 the random value.
  17
  18 Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
  19 Signed-off-by: Tianci Yin <tianci.yin@amd.com>
  20 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
  21 Signed-off-by: Sasha Levin <sashal@kernel.org>
  22 ---
  23  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
  24  1 file changed, 1 insertion(+)
  25
  26 diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
  27 index 83c8a0407537b..84ee777869441 100644
  28 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
  29 +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
  30 @@ -4455,6 +4455,7 @@ static void handle_cursor_update(struct drm_plane *plane,
  31         amdgpu_crtc->cursor_width = plane->state->crtc_w;
  32         amdgpu_crtc->cursor_height = plane->state->crtc_h;
  33
  34 +       memset(&attributes, 0, sizeof(attributes));
  35         attributes.address.high_part = upper_32_bits(address);
  36         attributes.address.low_part  = lower_32_bits(address);
  37         attributes.width             = plane->state->crtc_w;
  38 --
  39 2.20.1
  40