diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 8fbeecdf2ec4..f5a52c56891c 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -191,7 +191,7 @@ vc4_ctm_commit(struct vc4_dev *vc4, struct drm_atomic_state *state)
 }
 
 static struct vc4_hvs_state *
-vc4_hvs_get_new_global_state(struct drm_atomic_state *state)
+vc4_hvs_get_new_global_state(const struct drm_atomic_state *state)
 {
 	struct vc4_dev *vc4 = to_vc4_dev(state->dev);
 	struct drm_private_state *priv_state;
@@ -204,7 +204,7 @@ vc4_hvs_get_new_global_state(struct drm_atomic_state *state)
 }
 
 static struct vc4_hvs_state *
-vc4_hvs_get_old_global_state(struct drm_atomic_state *state)
+vc4_hvs_get_old_global_state(const struct drm_atomic_state *state)
 {
 	struct vc4_dev *vc4 = to_vc4_dev(state->dev);
 	struct drm_private_state *priv_state;