agp/intel-gtt: don't require the agp bridge on setup

We only need it to fake the agp interface and don't actually
use it in the driver anywhere. Hence conditionalize that.

This is just a prep patch to eventually disable the fake agp
driver on gen6+.

Reviewed-by: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 2aab0a03ee42..5e6c89e1d5eb 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1539,9 +1539,11 @@ int intel_gmch_probe(struct pci_dev *pdev,
         if (!intel_private.driver)
                 return 0;
 
-        bridge->driver = &intel_fake_agp_driver;
-        bridge->dev_private_data = &intel_private;
-        bridge->dev = pdev;
+        if (bridge) {
+                bridge->driver = &intel_fake_agp_driver;
+                bridge->dev_private_data = &intel_private;
+                bridge->dev = pdev;
+        }
 
         intel_private.bridge_dev = pci_dev_get(pdev);