drm/nouveau: reduce usage of fence spinlock to when absolutely necessary
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv04_graph.c b/drivers/gpu/drm/nouveau/nv04_graph.c
index dd09679..c897342 100644
--- a/drivers/gpu/drm/nouveau/nv04_graph.c
+++ b/drivers/gpu/drm/nouveau/nv04_graph.c
@@ -527,8 +527,7 @@
nv04_graph_mthd_set_ref(struct nouveau_channel *chan, int grclass,
int mthd, uint32_t data)
{
- chan->fence.last_sequence_irq = data;
- nouveau_fence_handler(chan->dev, chan->id);
+ atomic_set(&chan->fence.last_sequence_irq, data);
return 0;
}