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drm/nv50: wait for pgraph to idle before unloading the context

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This should fix the problem with gpu hangs people have had when closing
channels.

Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Maarten Maathuis 2010-01-11 21:18:53 +01:00 committed by Ben Skeggs
parent fe5a64acbf
commit 0a90dc51aa
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/nouveau/nv50_graph.c
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@ -282,6 +282,7 @@ nv50_graph_unload_context(struct drm_device *dev)
return 0;
inst &= NV50_PGRAPH_CTXCTL_CUR_INSTANCE;
nouveau_wait_for_idle(dev);
nv_wr32(dev, 0x400500, fifo & ~1);
nv_wr32(dev, 0x400784, inst);
nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) | 0x20);