From: "Leo (Sunpeng) Li" <sunpeng.li@amd.com>
Date: Wed, 4 Apr 2018 16:01:30 -0400
Subject: drm/amd/display: Fix memleak on input transfer function
Git-commit: e405c2173e8c1c8e2e823592581ba3f774e7811c
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Input transfer function creation is now done when the plane is created.
This is done within the following change:

    Author: Anthony Koo <Anthony.Koo@amd.com>
        drm/amd/display: Have DC manage its own allocation of gamma

Therefore, we no longer need to create it when filling in the plane
attributes.

Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |    8 --------
 1 file changed, 8 deletions(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2011,7 +2011,6 @@ static int fill_plane_attributes(struct
 	const struct amdgpu_framebuffer *amdgpu_fb =
 		to_amdgpu_framebuffer(plane_state->fb);
 	const struct drm_crtc *crtc = plane_state->crtc;
-	struct dc_transfer_func *input_tf;
 	int ret = 0;
 
 	if (!fill_rects_from_plane_state(plane_state, dc_plane_state))
@@ -2025,13 +2024,6 @@ static int fill_plane_attributes(struct
 	if (ret)
 		return ret;
 
-	input_tf = dc_create_transfer_func();
-
-	if (input_tf == NULL)
-		return -ENOMEM;
-
-	dc_plane_state->in_transfer_func = input_tf;
-
 	/*
 	 * Always set input transfer function, since plane state is refreshed
 	 * every time.