288 	 * Each pass the common prefix shrinks and we have to insert a join.  in igt_syncmap_join_above()
289 	 * Each join will only contain two branches, the latest of which  in igt_syncmap_join_above()
298 			struct i915_syncmap *join;  in igt_syncmap_join_above()  local
304 			join = sync->parent;  in igt_syncmap_join_above()
305 			if (!join) /* very first insert will have no parents */  in igt_syncmap_join_above()
308 			if (!join->height) {  in igt_syncmap_join_above()
314 			if (hweight32(join->bitmap) != 2) {  in igt_syncmap_join_above()
315 				pr_err("Join does not have 2 children: %x (%d)\n",  in igt_syncmap_join_above()
316 				       join->bitmap, hweight32(join->bitmap));  in igt_syncmap_join_above()
321 			if (__sync_child(join)[__sync_branch_idx(join, context)] != sync) {  in igt_syncmap_join_above()  local
342 	 * a join.  in igt_syncmap_join_below()
459 	 * height, we form a join but each child of that join is directly a  in igt_syncmap_compact()
486 			pr_err("Parent (join) of last leaf was not the sync!\n");  in igt_syncmap_compact()
492 			pr_err("Join does not have the expected height, found %d, expected %d\n",  in igt_syncmap_compact()
499 			pr_err("Join is not full!, found %x (%d) expected %lx (%d)\n",  in igt_syncmap_compact()