drm/nv50-nvc0/vm: take client reference on shared channel vm
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index b38b2806..12b3471 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -767,6 +767,7 @@
int
nouveau_open(struct drm_device *dev, struct drm_file *file_priv)
{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_fpriv *fpriv;
fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
@@ -776,6 +777,9 @@
spin_lock_init(&fpriv->lock);
INIT_LIST_HEAD(&fpriv->channels);
+ if (dev_priv->card_type >= NV_50)
+ nouveau_vm_ref(dev_priv->chan_vm, &fpriv->vm, NULL);
+
file_priv->driver_priv = fpriv;
return 0;
}
@@ -791,6 +795,7 @@
nouveau_postclose(struct drm_device *dev, struct drm_file *file_priv)
{
struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
+ nouveau_vm_ref(NULL, &fpriv->vm, NULL);
kfree(fpriv);
}