/* Number of tests =
* (Total GTT - IB pool - writeback page - ring buffer) / test size
*/
- n = (rdev->mc.gtt_size - RADEON_IB_POOL_SIZE*64*1024 - RADEON_GPU_PAGE_SIZE -
- rdev->cp.ring_size) / size;
+ n = ((u32)(rdev->mc.gtt_size - RADEON_IB_POOL_SIZE*64*1024 - RADEON_GPU_PAGE_SIZE -
+ rdev->cp.ring_size)) / size;
gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
if (!gtt_obj) {