drm/radeon: fix userptr return value checking (v2)

Otherwise we print false warning from time to time.

v2: agd5f: rebase

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
CC: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_mn.c

@@ -135,7 +135,7 @@ static void radeon_mn_invalidate_range_start(struct mmu_notifier *mn,
 	while (it) {
 		struct radeon_mn_node *node;
 		struct radeon_bo *bo;
-		int r;
+		long r;
 
 		node = container_of(it, struct radeon_mn_node, it);
 		it = interval_tree_iter_next(it, start, end);
@@ -144,19 +144,19 @@ static void radeon_mn_invalidate_range_start(struct mmu_notifier *mn,
 
 			r = radeon_bo_reserve(bo, true);
 			if (r) {
-				DRM_ERROR("(%d) failed to reserve user bo\n", r);
+				DRM_ERROR("(%ld) failed to reserve user bo\n", r);
 				continue;
 			}
 
 			r = reservation_object_wait_timeout_rcu(bo->tbo.resv,
 				true, false, MAX_SCHEDULE_TIMEOUT);
-			if (r)
-				DRM_ERROR("(%d) failed to wait for user bo\n", r);
+			if (r <= 0)
+				DRM_ERROR("(%ld) failed to wait for user bo\n", r);
 
 			radeon_ttm_placement_from_domain(bo, RADEON_GEM_DOMAIN_CPU);
 			r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 			if (r)
-				DRM_ERROR("(%d) failed to validate user bo\n", r);
+				DRM_ERROR("(%ld) failed to validate user bo\n", r);
 
 			radeon_bo_unreserve(bo);
 		}