drm/i915: properly restore the ppgtt page directory on resume

[pandora-kernel.git] / drivers / gpu / drm / i915 / i915_gem_gtt.c

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 2eacd78..a135c61 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -65,9 +65,7 @@ int i915_gem_init_aliasing_ppgtt(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct i915_hw_ppgtt *ppgtt;
-       uint32_t pd_entry;
        unsigned first_pd_entry_in_global_pt;
-       uint32_t __iomem *pd_addr;
        int i;
        int ret = -ENOMEM;
 
@@ -100,7 +98,6 @@ int i915_gem_init_aliasing_ppgtt(struct drm_device *dev)
                        goto err_pt_alloc;
        }
 
-       pd_addr = dev_priv->mm.gtt->gtt + first_pd_entry_in_global_pt;
        for (i = 0; i < ppgtt->num_pd_entries; i++) {
                dma_addr_t pt_addr;
                if (dev_priv->mm.gtt->needs_dmar) {
@@ -117,13 +114,7 @@ int i915_gem_init_aliasing_ppgtt(struct drm_device *dev)
                        ppgtt->pt_dma_addr[i] = pt_addr;
                } else
                        pt_addr = page_to_phys(ppgtt->pt_pages[i]);
-
-               pd_entry = GEN6_PDE_ADDR_ENCODE(pt_addr);
-               pd_entry |= GEN6_PDE_VALID;
-
-               writel(pd_entry, pd_addr + i);
        }
-       readl(pd_addr);
 
        ppgtt->scratch_page_dma_addr = dev_priv->mm.gtt->scratch_page_dma;