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drm/nvc0: reject the notifier_alloc ioctl

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-11-24 10:07:21 +10:00
parent 99805566d9
commit 587107b690
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/nouveau/nouveau_notifier.c
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@ -164,10 +164,15 @@ int
nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct drm_nouveau_notifierobj_alloc *na = data;
struct nouveau_channel *chan;
int ret;
/* completely unnecessary for these chipsets... */
if (unlikely(dev_priv->card_type >= NV_C0))
return -EINVAL;
chan = nouveau_channel_get(dev, file_priv, na->channel);
if (IS_ERR(chan))
return PTR_ERR(chan);