Commit dd015a3b authored Apr 01, 2019 by tiancyin Committed by Greg Kroah-Hartman May 10, 2019

drm/amd/display: fix cursor black issue



[ Upstream commit c1cefe115d1cdc460014483319d440b2f0d07c68 ]

[Why]
the member sdr_white_level of struct dc_cursor_attributes was not
initialized, then the random value result that
dcn10_set_cursor_sdr_white_level() set error hw_scale value 0x20D9(normal
value is 0x3c00), this cause the black cursor issue.

[how]
just initilize the obj of struct dc_cursor_attributes to zero to avoid
the random value.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Tianci Yin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 88294658

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -4028,6 +4028,7 @@ static void handle_cursor_update(struct drm_plane *plane,
		amdgpu_crtc->cursor_width = plane->state->crtc_w;
		amdgpu_crtc->cursor_height = plane->state->crtc_h;

		memset(&attributes, 0, sizeof(attributes));
		attributes.address.high_part = upper_32_bits(address);
		attributes.address.low_part = lower_32_bits(address);
		attributes.width = plane->state->crtc_w;