From: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
[Why]
A NULL ramp is a valid configuration for passing into
mod_color_calculate_degamma_params but we'll hit a NULL pointer if we do
so.
We need this in order to get the right transfer function to do degamma
on NV12 formats where we aren't supplied with a custom user degamma.
[How]
Add the NULL check.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
Reviewed-by: Zhan Liu <zhan....@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
index cac09d500fda..d47253cdcc4e 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -1902,7 +1902,7 @@ bool mod_color_calculate_degamma_params(struct
dc_transfer_func *input_tf,
- if (ramp->type == GAMMA_CUSTOM)
+ if (ramp && ramp->type == GAMMA_CUSTOM)
apply_lut_1d(ramp, MAX_HW_POINTS, tf_pts);
ret = true;
--
2.26.0
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