drm/i915: enable 36bit physical address for hardware status page

This enables possible 36bit address mask on 965G that use physical
address for hw status page.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 30c36ac2cd00..3999a5f25f38 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -2460,10 +2460,14 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
                                 &bridge->mode);
         }
 
-        if (bridge->driver->mask_memory == intel_i965_mask_memory)
+        if (bridge->driver->mask_memory == intel_i965_mask_memory) {
                 if (pci_set_dma_mask(intel_private.pcidev, DMA_BIT_MASK(36)))
                         dev_err(&intel_private.pcidev->dev,
                                 "set gfx device dma mask 36bit failed!\n");
+                else
+                        pci_set_consistent_dma_mask(intel_private.pcidev,
+                                                    DMA_BIT_MASK(36));
+        }
 
         pci_set_drvdata(pdev, bridge);
         return agp_add_bridge(bridge);