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: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: NTianci Yin <tianci.yin@amd.com> Signed-off-by: NAlex Deucher <alexander.deucher@amd.com> Signed-off-by: NSasha Levin <sashal@kernel.org>
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