1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index a7637d72cef6..b6b1568314c8 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -142,6 +142,7 @@ static int amd_create_gatt_table(struct agp_bridge_data *bridge)
 {
         struct aper_size_info_lvl2 *value;
         struct amd_page_map page_dir;
+        unsigned long __iomem *cur_gatt;
         unsigned long addr;
         int retval;
         u32 temp;
@@ -178,6 +179,13 @@ static int amd_create_gatt_table(struct agp_bridge_data *bridge)
                 readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr));        /* PCI Posting. */
         }
 
+        for (i = 0; i < value->num_entries; i++) {
+                addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr;
+                cur_gatt = GET_GATT(addr);
+                writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr));
+                readl(cur_gatt+GET_GATT_OFF(addr));     /* PCI Posting. */
+        }
+
         return 0;
 }
 
@@ -375,6 +383,7 @@ static const struct agp_bridge_driver amd_irongate_driver = {
         .aperture_sizes         = amd_irongate_sizes,
         .size_type              = LVL2_APER_SIZE,
         .num_aperture_sizes     = 7,
+        .needs_scratch_page     = true,
         .configure              = amd_irongate_configure,
         .fetch_size             = amd_irongate_fetch_size,
         .cleanup                = amd_irongate_cleanup,