diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c
index 2b1f917..db00175 100644
--- a/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c
+++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nv40.c
@@ -186,6 +186,7 @@ nv40_fifo_chan_ctor(struct nouveau_object *parent,
 	struct nv04_fifo_chan *chan;
 	struct nv03_channel_dma_class *args = data;
 	int ret;
+	u64 ofs;
 
 	if (size < sizeof(*args))
 		return -EINVAL;
@@ -209,6 +210,8 @@ nv40_fifo_chan_ctor(struct nouveau_object *parent,
 	nv_wo32(priv->ramfc, chan->ramfc + 0x00, args->offset);
 	nv_wo32(priv->ramfc, chan->ramfc + 0x04, args->offset);
 	nv_wo32(priv->ramfc, chan->ramfc + 0x0c, chan->base.pushgpu->addr >> 4);
+	for (ofs = 0x10; ofs < 0x80; ofs += 4)
+		nv_wo32(priv->ramfc, chan->ramfc + ofs, 0);
 	nv_wo32(priv->ramfc, chan->ramfc + 0x18, 0x30000000 |
 			     NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
 			     NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |