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From 06d50c0974e0f2953e6b0414ac969e1548862352 Mon Sep 17 00:00:00 2001
From: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Date: Thu, 16 May 2019 11:14:55 -0400
Subject: [PATCH 2032/2940] drm/amd/display: CS_TFM_1D only applied post EOTF
[Why]
There's some unnecessary mem allocation for CS_TFM_ID. What's worse, it
depends on LUT size and since it's 4K for CS_TFM_1D, it is 16x bigger
than in regular case when it's actually needed. This leads to some
crashes in stress conditions.
[How]
Skip ramp combining designed for RGB256 and DXGI gamma with CS_TFM_1D.
Signed-off-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
---
drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 3 ++-
1 file changed, 2 insertions(+), 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 369a89071217..89a65e1d8317 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -1576,7 +1576,8 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
output_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
- if (ramp && (mapUserRamp || ramp->type != GAMMA_RGB_256)) {
+ if (ramp && ramp->type != GAMMA_CS_TFM_1D &&
+ (mapUserRamp || ramp->type != GAMMA_RGB_256)) {
rgb_user = kvcalloc(ramp->num_entries + _EXTRA_POINTS,
sizeof(*rgb_user),
GFP_KERNEL);
--
2.17.1
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