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From d02e252f047aaadb3cd0ef5e37b67dfde749cfbf Mon Sep 17 00:00:00 2001
From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Fri, 19 Jan 2018 11:59:16 -0500
Subject: [PATCH 3496/4131] drm/amd/display: Null check for gamma correction.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index a3f84dc..e6f8227 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -900,7 +900,8 @@ static bool dcn10_set_input_transfer_func(struct pipe_ctx *pipe_ctx,
if (plane_state->in_transfer_func)
tf = plane_state->in_transfer_func;
- if (plane_state->gamma_correction->is_identity)
+ if (plane_state->gamma_correction &&
+ plane_state->gamma_correction->is_identity)
dpp_base->funcs->dpp_set_degamma(dpp_base, IPP_DEGAMMA_MODE_BYPASS);
else if (plane_state->gamma_correction && dce_use_lut(plane_state->format))
dpp_base->funcs->dpp_program_input_lut(dpp_base, plane_state->gamma_correction);
--
2.7.4
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