drm/radeon/kms: Check if bo we got from ttm are radeon object or not

If they are not radeon object don't do anythings special for them,
this avoid rare oops than can happen in a complex use case.

[airlied: additional fixups]

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index d2ed896cca01..7bed4122528c 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -200,7 +200,19 @@ static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
 static void radeon_evict_flags(struct ttm_buffer_object *bo,
                                 struct ttm_placement *placement)
 {
-        struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo);
+        struct radeon_bo *rbo;
+        static u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
+
+        if (!radeon_ttm_bo_is_radeon_bo(bo)) {
+                placement->fpfn = 0;
+                placement->lpfn = 0;
+                placement->placement = &placements;
+                placement->busy_placement = &placements;
+                placement->num_placement = 1;
+                placement->num_busy_placement = 1;
+                return;
+        }
+        rbo = container_of(bo, struct radeon_bo, tbo);
         switch (bo->mem.mem_type) {
         case TTM_PL_VRAM:
                 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);