[PATCH 5.14 067/172] drm/amd/display: initialize backlight_ramping_override to false

Greg Kroah-Hartman
2021-10-04T13:35:50Z

From: Josip Pavic <Josip.Pavic@amd.com>

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@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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;