723 				       struct domain_device *child,  in sas_ex_get_linkrate()  argument
730 	child->pathways = 0;  in sas_ex_get_linkrate()
741 		if (sas_phy_match_dev_addr(child, phy)) {  in sas_ex_get_linkrate()
742 			child->min_linkrate = min(parent->min_linkrate,  in sas_ex_get_linkrate()
744 			child->max_linkrate = max(parent->max_linkrate,  in sas_ex_get_linkrate()
746 			child->pathways++;  in sas_ex_get_linkrate()
750 	child->linkrate = min(parent_phy->linkrate, child->max_linkrate);  in sas_ex_get_linkrate()
751 	child->pathways = min(child->pathways, parent->pathways);  in sas_ex_get_linkrate()
755 			  struct domain_device *child, int phy_id)  in sas_ex_add_dev()  argument
760 	child->dev_type = SAS_END_DEVICE;  in sas_ex_add_dev()
765 	child->tproto = phy->attached_tproto;  in sas_ex_add_dev()
766 	sas_init_dev(child);  in sas_ex_add_dev()
768 	child->rphy = rphy;  in sas_ex_add_dev()
771 	sas_fill_in_rphy(child, rphy);  in sas_ex_add_dev()
773 	list_add_tail(&child->disco_list_node, &parent->port->disco_list);  in sas_ex_add_dev()
775 	res = sas_notify_lldd_dev_found(child);  in sas_ex_add_dev()
778 			  SAS_ADDR(child->sas_addr),  in sas_ex_add_dev()
780 		sas_rphy_free(child->rphy);  in sas_ex_add_dev()
781 		list_del(&child->disco_list_node);  in sas_ex_add_dev()
793 	struct domain_device *child = NULL;  in sas_ex_discover_end_dev()  local
799 	child = sas_alloc_device();  in sas_ex_discover_end_dev()
800 	if (!child)  in sas_ex_discover_end_dev()
804 	child->parent = parent;  in sas_ex_discover_end_dev()
805 	child->port   = parent->port;  in sas_ex_discover_end_dev()
806 	child->iproto = phy->attached_iproto;  in sas_ex_discover_end_dev()
807 	memcpy(child->sas_addr, phy->attached_sas_addr, SAS_ADDR_SIZE);  in sas_ex_discover_end_dev()
808 	sas_hash_addr(child->hashed_sas_addr, child->sas_addr);  in sas_ex_discover_end_dev()
818 	sas_ex_get_linkrate(parent, child, phy);  in sas_ex_discover_end_dev()
819 	sas_device_set_phy(child, phy->port);  in sas_ex_discover_end_dev()
822 		res = sas_ata_add_dev(parent, phy, child, phy_id);  in sas_ex_discover_end_dev()
824 		res = sas_ex_add_dev(parent, phy, child, phy_id);  in sas_ex_discover_end_dev()
835 	list_add_tail(&child->siblings, &parent_ex->children);  in sas_ex_discover_end_dev()
836 	return child;  in sas_ex_discover_end_dev()
842 	sas_put_device(child);  in sas_ex_discover_end_dev()
875 	struct domain_device *child = NULL;  in sas_ex_discover_expander()  local
888 	child = sas_alloc_device();  in sas_ex_discover_expander()
889 	if (!child)  in sas_ex_discover_expander()
911 	child->rphy = rphy;  in sas_ex_discover_expander()
914 	child->dev_type = phy->attached_dev_type;  in sas_ex_discover_expander()
916 	child->parent = parent;  in sas_ex_discover_expander()
917 	child->port = port;  in sas_ex_discover_expander()
918 	child->iproto = phy->attached_iproto;  in sas_ex_discover_expander()
919 	child->tproto = phy->attached_tproto;  in sas_ex_discover_expander()
920 	memcpy(child->sas_addr, phy->attached_sas_addr, SAS_ADDR_SIZE);  in sas_ex_discover_expander()
921 	sas_hash_addr(child->hashed_sas_addr, child->sas_addr);  in sas_ex_discover_expander()
922 	sas_ex_get_linkrate(parent, child, phy);  in sas_ex_discover_expander()
926 	sas_init_dev(child);  in sas_ex_discover_expander()
927 	sas_fill_in_rphy(child, rphy);  in sas_ex_discover_expander()
931 	list_add_tail(&child->dev_list_node, &parent->port->dev_list);  in sas_ex_discover_expander()
934 	res = sas_discover_expander(child);  in sas_ex_discover_expander()
938 		list_del(&child->dev_list_node);  in sas_ex_discover_expander()
940 		sas_put_device(child);  in sas_ex_discover_expander()
945 	list_add_tail(&child->siblings, &parent->ex_dev.children);  in sas_ex_discover_expander()
946 	return child;  in sas_ex_discover_expander()
953 	struct domain_device *child = NULL;  in sas_ex_discover_dev()  local
1016 		child = sas_ex_discover_end_dev(dev, phy_id);  in sas_ex_discover_dev()
1032 		child = sas_ex_discover_expander(dev, phy_id);  in sas_ex_discover_dev()
1038 	if (!child)  in sas_ex_discover_dev()
1070 	struct domain_device *child;  in sas_check_level_subtractive_boundary()  local
1073 	list_for_each_entry(child, &ex->children, siblings) {  in sas_check_level_subtractive_boundary()
1074 		if (!dev_is_expander(child->dev_type))  in sas_check_level_subtractive_boundary()
1077 			sas_find_sub_addr(child, sub_addr);  in sas_check_level_subtractive_boundary()
1082 			if (sas_find_sub_addr(child, s2) &&  in sas_check_level_subtractive_boundary()
1087 					  SAS_ADDR(child->sas_addr),  in sas_check_level_subtractive_boundary()
1091 				sas_ex_disable_port(child, s2);  in sas_check_level_subtractive_boundary()
1178 static void sas_print_parent_topology_bug(struct domain_device *child,  in sas_print_parent_topology_bug()  argument
1186 	struct domain_device *parent = child->parent;  in sas_print_parent_topology_bug()
1193 		  ex_type[child->dev_type],  in sas_print_parent_topology_bug()
1194 		  SAS_ADDR(child->sas_addr),  in sas_print_parent_topology_bug()
1198 		  sas_route_char(child, child_phy));  in sas_print_parent_topology_bug()
1202 			   struct domain_device *child)  in sas_eeds_valid()  argument
1207 		SAS_ADDR(disc->eeds_a) == SAS_ADDR(child->sas_addr)) &&  in sas_eeds_valid()
1209 		SAS_ADDR(disc->eeds_b) == SAS_ADDR(child->sas_addr));  in sas_eeds_valid()
1212 static int sas_check_eeds(struct domain_device *child,  in sas_check_eeds()  argument
1217 	struct domain_device *parent = child->parent;  in sas_check_eeds()
1225 			SAS_ADDR(child->sas_addr),  in sas_check_eeds()
1230 		memcpy(disc->eeds_b, child->sas_addr, SAS_ADDR_SIZE);  in sas_check_eeds()
1231 	} else if (!sas_eeds_valid(parent, child)) {  in sas_check_eeds()
1236 			SAS_ADDR(child->sas_addr),  in sas_check_eeds()
1243 static int sas_check_edge_expander_topo(struct domain_device *child,  in sas_check_edge_expander_topo()  argument
1246 	struct expander_device *child_ex = &child->ex_dev;  in sas_check_edge_expander_topo()
1247 	struct expander_device *parent_ex = &child->parent->ex_dev;  in sas_check_edge_expander_topo()
1252 	if (child->dev_type == SAS_FANOUT_EXPANDER_DEVICE) {  in sas_check_edge_expander_topo()
1258 			return sas_check_eeds(child, parent_phy, child_phy);  in sas_check_edge_expander_topo()
1270 	sas_print_parent_topology_bug(child, parent_phy, child_phy);  in sas_check_edge_expander_topo()
1274 static int sas_check_fanout_expander_topo(struct domain_device *child,  in sas_check_fanout_expander_topo()  argument
1277 	struct expander_device *child_ex = &child->ex_dev;  in sas_check_fanout_expander_topo()
1286 	sas_print_parent_topology_bug(child, parent_phy, child_phy);  in sas_check_fanout_expander_topo()
1291 static int sas_check_parent_topology(struct domain_device *child)  in sas_check_parent_topology()  argument
1297 	if (!child->parent)  in sas_check_parent_topology()
1300 	if (!dev_is_expander(child->parent->dev_type))  in sas_check_parent_topology()
1303 	parent_ex = &child->parent->ex_dev;  in sas_check_parent_topology()
1312 		if (!sas_phy_match_dev_addr(child, parent_phy))  in sas_check_parent_topology()
1315 		switch (child->parent->dev_type) {  in sas_check_parent_topology()
1317 			if (sas_check_edge_expander_topo(child, parent_phy))  in sas_check_parent_topology()
1321 			if (sas_check_fanout_expander_topo(child, parent_phy))  in sas_check_parent_topology()
1467  * @child: child expander
1468  * @sas_addr: SAS port identifier of device directly attached to child
1469  * @include: whether or not to include @child in the expander routing table
1472 				struct domain_device *child,  in sas_configure_parent()  argument
1496 		    sas_phy_match_dev_addr(child, phy)) {  in sas_configure_parent()
1810 	struct domain_device *child, *n;  in sas_unregister_ex_tree()  local
1812 	list_for_each_entry_safe(child, n, &ex->children, siblings) {  in sas_unregister_ex_tree()
1813 		set_bit(SAS_DEV_GONE, &child->state);  in sas_unregister_ex_tree()
1814 		if (dev_is_expander(child->dev_type))  in sas_unregister_ex_tree()
1815 			sas_unregister_ex_tree(port, child);  in sas_unregister_ex_tree()
1817 			sas_unregister_dev(port, child);  in sas_unregister_ex_tree()
1827 	struct domain_device *child, *n, *found = NULL;  in sas_unregister_devs_sas_addr()  local
1829 		list_for_each_entry_safe(child, n,  in sas_unregister_devs_sas_addr()
1831 			if (sas_phy_match_dev_addr(child, phy)) {  in sas_unregister_devs_sas_addr()
1832 				set_bit(SAS_DEV_GONE, &child->state);  in sas_unregister_devs_sas_addr()
1833 				if (dev_is_expander(child->dev_type))  in sas_unregister_devs_sas_addr()
1834 					sas_unregister_ex_tree(parent->port, child);  in sas_unregister_devs_sas_addr()
1836 					sas_unregister_dev(parent->port, child);  in sas_unregister_devs_sas_addr()
1837 				found = child;  in sas_unregister_devs_sas_addr()
1858 	struct domain_device *child;  in sas_discover_bfs_by_root_level()  local
1861 	list_for_each_entry(child, &ex_root->children, siblings) {  in sas_discover_bfs_by_root_level()
1862 		if (dev_is_expander(child->dev_type)) {  in sas_discover_bfs_by_root_level()
1864 				rphy_to_expander_device(child->rphy);  in sas_discover_bfs_by_root_level()
1867 				res = sas_discover_bfs_by_root_level(child,  in sas_discover_bfs_by_root_level()
1870 				res = sas_ex_discover_devices(child, -1);  in sas_discover_bfs_by_root_level()
1897 	struct domain_device *child;  in sas_discover_new()  local
1912 	list_for_each_entry(child, &dev->ex_dev.children, siblings) {  in sas_discover_new()
1913 		if (sas_phy_match_dev_addr(child, ex_phy)) {  in sas_discover_new()
1914 			if (dev_is_expander(child->dev_type))  in sas_discover_new()
1915 				res = sas_discover_bfs_by_root(child);  in sas_discover_new()