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path: root/drivers/gpu/drm/nouveau/nv50_vm.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_vm.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_vm.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_vm.c b/drivers/gpu/drm/nouveau/nv50_vm.c
index 459ff08241e..6144156f255 100644
--- a/drivers/gpu/drm/nouveau/nv50_vm.c
+++ b/drivers/gpu/drm/nouveau/nv50_vm.c
@@ -169,7 +169,11 @@ nv50_vm_flush(struct nouveau_vm *vm)
void
nv50_vm_flush_engine(struct drm_device *dev, int engine)
{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ spin_lock(&dev_priv->ramin_lock);
nv_wr32(dev, 0x100c80, (engine << 16) | 1);
if (!nv_wait(dev, 0x100c80, 0x00000001, 0x00000000))
NV_ERROR(dev, "vm flush timeout: engine %d\n", engine);
+ spin_unlock(&dev_priv->ramin_lock);
}