drm/ttm: restructure to allow driver to plug in alternate memory manager

Nouveau will need this on GeForce 8 and up to account for the GPU
reordering physical VRAM for some memory types.

Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Thomas Hellström <thellstrom@vmware.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c
index 4bf69c40449..f999e36f30b 100644
--- a/drivers/gpu/drm/ttm/ttm_agp_backend.c
+++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c
@@ -74,6 +74,7 @@ static int ttm_agp_bind(struct ttm_backend *backend, struct ttm_mem_reg *bo_mem)
 {
         struct ttm_agp_backend *agp_be =
             container_of(backend, struct ttm_agp_backend, backend);
+        struct drm_mm_node *node = bo_mem->mm_node;
         struct agp_memory *mem = agp_be->mem;
         int cached = (bo_mem->placement & TTM_PL_FLAG_CACHED);
         int ret;
@@ -81,7 +82,7 @@ static int ttm_agp_bind(struct ttm_backend *backend, struct ttm_mem_reg *bo_mem)
         mem->is_flushed = 1;
         mem->type = (cached) ? AGP_USER_CACHED_MEMORY : AGP_USER_MEMORY;
 
-        ret = agp_bind_memory(mem, bo_mem->mm_node->start);
+        ret = agp_bind_memory(mem, node->start);
         if (ret)
                 printk(KERN_ERR TTM_PFX "AGP Bind memory failed.\n");