i915: fix oops on agp=off

Kernel bug 10289.

diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index 407befc..1e493e3 100644 (file)
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -1060,6 +1060,10 @@ void i915_driver_lastclose(struct drm_device * dev)
 {
        drm_i915_private_t *dev_priv = dev->dev_private;
 
+       /* agp off can use this to get called before dev_priv */
+       if (!dev_priv)
+               return;
+
 #ifdef I915_HAVE_BUFFER
        if (dev_priv->val_bufs) {
                vfree(dev_priv->val_bufs);