1 files changed, 10 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 9b61c8ba7aaf..716f2afeb6a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -251,8 +251,8 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
 
         adev = amdgpu_get_adev(bo->bdev);
         ring = adev->mman.buffer_funcs_ring;
-        old_start = old_mem->start << PAGE_SHIFT;
-        new_start = new_mem->start << PAGE_SHIFT;
+        old_start = (u64)old_mem->start << PAGE_SHIFT;
+        new_start = (u64)new_mem->start << PAGE_SHIFT;
 
         switch (old_mem->mem_type) {
         case TTM_PL_VRAM:
@@ -950,6 +950,8 @@ static struct list_head *amdgpu_ttm_lru_tail(struct ttm_buffer_object *tbo)
         struct list_head *res = lru->lru[tbo->mem.mem_type];
 
         lru->lru[tbo->mem.mem_type] = &tbo->lru;
+        while ((++lru)->lru[tbo->mem.mem_type] == res)
+                lru->lru[tbo->mem.mem_type] = &tbo->lru;
 
         return res;
 }
@@ -960,6 +962,8 @@ static struct list_head *amdgpu_ttm_swap_lru_tail(struct ttm_buffer_object *tbo)
         struct list_head *res = lru->swap_lru;
 
         lru->swap_lru = &tbo->swap;
+        while ((++lru)->swap_lru == res)
+                lru->swap_lru = &tbo->swap;
 
         return res;
 }
@@ -1011,6 +1015,10 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
                 lru->swap_lru = &adev->mman.bdev.glob->swap_lru;
         }
 
+        for (j = 0; j < TTM_NUM_MEM_TYPES; ++j)
+                adev->mman.guard.lru[j] = NULL;
+        adev->mman.guard.swap_lru = NULL;
+
         adev->mman.initialized = true;
         r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_VRAM,
                                 adev->mc.real_vram_size >> PAGE_SHIFT);