[PATCH v9 01/10] drm/amd/display: Fix planes atomic_create_state implementation

[Maxime Ripard <mripard@kernel.org>]

Commit 2bcec01cf105 ("drm/amdgpu_dm: Convert to atomic_create_state")
converted the amdgpu planes to use atomic_create_state instead of reset.

Unlike reset, atomic_create_state is meant to allocate a new default
state without any side effect on the hardware or software state.

However, during the conversion we forgot to remove the call to destroy
the existing plane state if any. While this was expected from a reset
implementation, it's not for an atomic_create_state one. Remove it.

Fixes: 2bcec01cf105 ("drm/amdgpu_dm: Convert to atomic_create_state")
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>

---

To: Harry Wentland <harry.wentland@amd.com>
To: Leo Li <sunpeng.li@amd.com>
To: Rodrigo Siqueira <siqueira@igalia.com>
To: Alex Deucher <alexander.deucher@amd.com>
To: Christian König <christian.koenig@amd.com>
Cc: amd-gfx@lists.freedesktop.org
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index 91398230d408..31101c810bac 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -1801,13 +1801,10 @@ STATIC_IFN_KUNIT struct drm_plane_state *amdgpu_dm_plane_drm_plane_create_state(
 		kfree(amdgpu_state->plane_info);
 		kfree(amdgpu_state);
 		return ERR_PTR(-ENOMEM);
 	}
 
-	if (plane->state)
-		plane->funcs->atomic_destroy_state(plane, plane->state);
-
 	__drm_atomic_helper_plane_state_init(&amdgpu_state->base, plane);
 	amdgpu_state->degamma_tf = AMDGPU_TRANSFER_FUNCTION_DEFAULT;
 	amdgpu_state->hdr_mult = AMDGPU_HDR_MULT_DEFAULT;
 	amdgpu_state->shaper_tf = AMDGPU_TRANSFER_FUNCTION_DEFAULT;
 	amdgpu_state->blend_tf = AMDGPU_TRANSFER_FUNCTION_DEFAULT;

-- 
2.56.0