We changed the semantics for this in:

e761cc20946a ("drm/display/dp_mst: Handle old/new payload states in 
drm_dp_remove_payload()")

But I totally forgot to update this properly in nouveau. So, let's do that.

Signed-off-by: Lyude Paul <ly...@redhat.com>
---
 drivers/gpu/drm/nouveau/dispnv50/disp.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c 
b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 5bb777ff13130..1637e08b548c2 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -909,15 +909,19 @@ nv50_msto_prepare(struct drm_atomic_state *state,
        struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev);
        struct nv50_mstc *mstc = msto->mstc;
        struct nv50_mstm *mstm = mstc->mstm;
-       struct drm_dp_mst_atomic_payload *payload;
+       struct drm_dp_mst_topology_state *old_mst_state;
+       struct drm_dp_mst_atomic_payload *payload, *old_payload;
 
        NV_ATOMIC(drm, "%s: msto prepare\n", msto->encoder.name);
 
+       old_mst_state = drm_atomic_get_old_mst_topology_state(state, mgr);
+
        payload = drm_atomic_get_mst_payload_state(mst_state, mstc->port);
+       old_payload = drm_atomic_get_mst_payload_state(old_mst_state, 
mstc->port);
 
        // TODO: Figure out if we want to do a better job of handling VCPI 
allocation failures here?
        if (msto->disabled) {
-               drm_dp_remove_payload(mgr, mst_state, payload, payload);
+               drm_dp_remove_payload(mgr, mst_state, old_payload, payload);
 
                nvif_outp_dp_mst_vcpi(&mstm->outp->outp, 
msto->head->base.index, 0, 0, 0, 0);
        } else {
-- 
2.40.1

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