From: Josip Pavic <Josip.Pavic@xxxxxxx> commit 467a51b69d0828887fb1b6719159a6b16da688f8 upstream. [Why] Stack variable params.backlight_ramping_override is uninitialized, so it contains junk data [How] Initialize the variable to false Reviewed-by: Roman Li <Roman.Li@xxxxxxx> Acked-by: Anson Jacob <Anson.Jacob@xxxxxxx> Signed-off-by: Josip Pavic <Josip.Pavic@xxxxxxx> Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1724,6 +1724,7 @@ static int dm_late_init(void *handle) linear_lut[i] = 0xFFFF * i / 15; params.set = 0; + params.backlight_ramping_override = false; params.backlight_ramping_start = 0xCCCC; params.backlight_ramping_reduction = 0xCCCCCCCC; params.backlight_lut_array_size = 16;