--- /dev/null
+From f439a959dcfb6b39d6fd4b85ca1110a1d1de1587 Mon Sep 17 00:00:00 2001
+From: Dave Airlie <airlied@redhat.com>
+Date: Fri, 27 Jan 2023 12:15:13 +1000
+Subject: amdgpu: fix build on non-DCN platforms.
+
+From: Dave Airlie <airlied@redhat.com>
+
+commit f439a959dcfb6b39d6fd4b85ca1110a1d1de1587 upstream.
+
+This fixes the build here locally on my 32-bit arm build.
+
+Signed-off-by: Dave Airlie <airlied@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+@@ -9393,8 +9393,6 @@ static int amdgpu_dm_atomic_check(struct
+ struct drm_connector_state *old_con_state, *new_con_state;
+ struct drm_crtc *crtc;
+ struct drm_crtc_state *old_crtc_state, *new_crtc_state;
+- struct drm_dp_mst_topology_mgr *mgr;
+- struct drm_dp_mst_topology_state *mst_state;
+ struct drm_plane *plane;
+ struct drm_plane_state *old_plane_state, *new_plane_state;
+ enum dc_status status;
+@@ -9402,6 +9400,8 @@ static int amdgpu_dm_atomic_check(struct
+ bool lock_and_validation_needed = false;
+ struct dm_crtc_state *dm_old_crtc_state, *dm_new_crtc_state;
+ #if defined(CONFIG_DRM_AMD_DC_DCN)
++ struct drm_dp_mst_topology_mgr *mgr;
++ struct drm_dp_mst_topology_state *mst_state;
+ struct dsc_mst_fairness_vars vars[MAX_PIPES];
+ #endif
+