744 				       struct domain_device *child,  in sas_ex_get_linkrate()  argument
751 	child->pathways = 0;  in sas_ex_get_linkrate()
762 		if (sas_phy_match_dev_addr(child, phy)) {  in sas_ex_get_linkrate()
763 			child->min_linkrate = min(parent->min_linkrate,  in sas_ex_get_linkrate()
765 			child->max_linkrate = max(parent->max_linkrate,  in sas_ex_get_linkrate()
767 			child->pathways++;  in sas_ex_get_linkrate()
771 	child->linkrate = min(parent_phy->linkrate, child->max_linkrate);  in sas_ex_get_linkrate()
772 	child->pathways = min(child->pathways, parent->pathways);  in sas_ex_get_linkrate()
776 			  struct domain_device *child, int phy_id)  in sas_ex_add_dev()  argument
781 	child->dev_type = SAS_END_DEVICE;  in sas_ex_add_dev()
786 	child->tproto = phy->attached_tproto;  in sas_ex_add_dev()
787 	sas_init_dev(child);  in sas_ex_add_dev()
789 	child->rphy = rphy;  in sas_ex_add_dev()
792 	sas_fill_in_rphy(child, rphy);  in sas_ex_add_dev()
794 	list_add_tail(&child->disco_list_node, &parent->port->disco_list);  in sas_ex_add_dev()
796 	res = sas_notify_lldd_dev_found(child);  in sas_ex_add_dev()
799 			  SAS_ADDR(child->sas_addr),  in sas_ex_add_dev()
801 		sas_rphy_free(child->rphy);  in sas_ex_add_dev()
802 		list_del(&child->disco_list_node);  in sas_ex_add_dev()
814 	struct domain_device *child = NULL;  in sas_ex_discover_end_dev()  local
820 	child = sas_alloc_device();  in sas_ex_discover_end_dev()
821 	if (!child)  in sas_ex_discover_end_dev()
825 	child->parent = parent;  in sas_ex_discover_end_dev()
826 	child->port   = parent->port;  in sas_ex_discover_end_dev()
827 	child->iproto = phy->attached_iproto;  in sas_ex_discover_end_dev()
828 	memcpy(child->sas_addr, phy->attached_sas_addr, SAS_ADDR_SIZE);  in sas_ex_discover_end_dev()
829 	sas_hash_addr(child->hashed_sas_addr, child->sas_addr);  in sas_ex_discover_end_dev()
839 	sas_ex_get_linkrate(parent, child, phy);  in sas_ex_discover_end_dev()
840 	sas_device_set_phy(child, phy->port);  in sas_ex_discover_end_dev()
843 		res = sas_ata_add_dev(parent, phy, child, phy_id);  in sas_ex_discover_end_dev()
845 		res = sas_ex_add_dev(parent, phy, child, phy_id);  in sas_ex_discover_end_dev()
856 	list_add_tail(&child->siblings, &parent_ex->children);  in sas_ex_discover_end_dev()
857 	return child;  in sas_ex_discover_end_dev()
863 	sas_put_device(child);  in sas_ex_discover_end_dev()
894 	struct domain_device *child = NULL;  in sas_ex_discover_expander()  local
907 	child = sas_alloc_device();  in sas_ex_discover_expander()
908 	if (!child)  in sas_ex_discover_expander()
930 	child->rphy = rphy;  in sas_ex_discover_expander()
933 	child->dev_type = phy->attached_dev_type;  in sas_ex_discover_expander()
935 	child->parent = parent;  in sas_ex_discover_expander()
936 	child->port = port;  in sas_ex_discover_expander()
937 	child->iproto = phy->attached_iproto;  in sas_ex_discover_expander()
938 	child->tproto = phy->attached_tproto;  in sas_ex_discover_expander()
939 	memcpy(child->sas_addr, phy->attached_sas_addr, SAS_ADDR_SIZE);  in sas_ex_discover_expander()
940 	sas_hash_addr(child->hashed_sas_addr, child->sas_addr);  in sas_ex_discover_expander()
941 	sas_ex_get_linkrate(parent, child, phy);  in sas_ex_discover_expander()
945 	sas_init_dev(child);  in sas_ex_discover_expander()
946 	sas_fill_in_rphy(child, rphy);  in sas_ex_discover_expander()
950 	list_add_tail(&child->dev_list_node, &parent->port->dev_list);  in sas_ex_discover_expander()
953 	res = sas_discover_expander(child);  in sas_ex_discover_expander()
957 		list_del(&child->dev_list_node);  in sas_ex_discover_expander()
959 		sas_put_device(child);  in sas_ex_discover_expander()
964 	list_add_tail(&child->siblings, &parent->ex_dev.children);  in sas_ex_discover_expander()
965 	return child;  in sas_ex_discover_expander()
972 	struct domain_device *child = NULL;  in sas_ex_discover_dev()  local
1035 		child = sas_ex_discover_end_dev(dev, phy_id);  in sas_ex_discover_dev()
1051 		child = sas_ex_discover_expander(dev, phy_id);  in sas_ex_discover_dev()
1057 	if (!child)  in sas_ex_discover_dev()
1089 	struct domain_device *child;  in sas_check_level_subtractive_boundary()  local
1092 	list_for_each_entry(child, &ex->children, siblings) {  in sas_check_level_subtractive_boundary()
1093 		if (!dev_is_expander(child->dev_type))  in sas_check_level_subtractive_boundary()
1096 			sas_find_sub_addr(child, sub_addr);  in sas_check_level_subtractive_boundary()
1101 			if (sas_find_sub_addr(child, s2) &&  in sas_check_level_subtractive_boundary()
1106 					  SAS_ADDR(child->sas_addr),  in sas_check_level_subtractive_boundary()
1110 				sas_ex_disable_port(child, s2);  in sas_check_level_subtractive_boundary()
1197 static void sas_print_parent_topology_bug(struct domain_device *child,  in sas_print_parent_topology_bug()  argument
1205 	struct domain_device *parent = child->parent;  in sas_print_parent_topology_bug()
1212 		  ex_type[child->dev_type],  in sas_print_parent_topology_bug()
1213 		  SAS_ADDR(child->sas_addr),  in sas_print_parent_topology_bug()
1217 		  sas_route_char(child, child_phy));  in sas_print_parent_topology_bug()
1221 			   struct domain_device *child)  in sas_eeds_valid()  argument
1226 		SAS_ADDR(disc->eeds_a) == SAS_ADDR(child->sas_addr)) &&  in sas_eeds_valid()
1228 		SAS_ADDR(disc->eeds_b) == SAS_ADDR(child->sas_addr));  in sas_eeds_valid()
1231 static int sas_check_eeds(struct domain_device *child,  in sas_check_eeds()  argument
1236 	struct domain_device *parent = child->parent;  in sas_check_eeds()
1244 			SAS_ADDR(child->sas_addr),  in sas_check_eeds()
1249 		memcpy(disc->eeds_b, child->sas_addr, SAS_ADDR_SIZE);  in sas_check_eeds()
1250 	} else if (!sas_eeds_valid(parent, child)) {  in sas_check_eeds()
1255 			SAS_ADDR(child->sas_addr),  in sas_check_eeds()
1262 static int sas_check_edge_expander_topo(struct domain_device *child,  in sas_check_edge_expander_topo()  argument
1265 	struct expander_device *child_ex = &child->ex_dev;  in sas_check_edge_expander_topo()
1266 	struct expander_device *parent_ex = &child->parent->ex_dev;  in sas_check_edge_expander_topo()
1271 	if (child->dev_type == SAS_FANOUT_EXPANDER_DEVICE) {  in sas_check_edge_expander_topo()
1277 			return sas_check_eeds(child, parent_phy, child_phy);  in sas_check_edge_expander_topo()
1289 	sas_print_parent_topology_bug(child, parent_phy, child_phy);  in sas_check_edge_expander_topo()
1293 static int sas_check_fanout_expander_topo(struct domain_device *child,  in sas_check_fanout_expander_topo()  argument
1296 	struct expander_device *child_ex = &child->ex_dev;  in sas_check_fanout_expander_topo()
1305 	sas_print_parent_topology_bug(child, parent_phy, child_phy);  in sas_check_fanout_expander_topo()
1310 static int sas_check_parent_topology(struct domain_device *child)  in sas_check_parent_topology()  argument
1316 	if (!child->parent)  in sas_check_parent_topology()
1319 	if (!dev_is_expander(child->parent->dev_type))  in sas_check_parent_topology()
1322 	parent_ex = &child->parent->ex_dev;  in sas_check_parent_topology()
1331 		if (!sas_phy_match_dev_addr(child, parent_phy))  in sas_check_parent_topology()
1334 		switch (child->parent->dev_type) {  in sas_check_parent_topology()
1336 			if (sas_check_edge_expander_topo(child, parent_phy))  in sas_check_parent_topology()
1340 			if (sas_check_fanout_expander_topo(child, parent_phy))  in sas_check_parent_topology()
1491 				struct domain_device *child,  in sas_configure_parent()  argument
1515 		    sas_phy_match_dev_addr(child, phy)) {  in sas_configure_parent()
1834 	struct domain_device *child, *n;  in sas_unregister_ex_tree()  local
1836 	list_for_each_entry_safe(child, n, &ex->children, siblings) {  in sas_unregister_ex_tree()
1837 		set_bit(SAS_DEV_GONE, &child->state);  in sas_unregister_ex_tree()
1838 		if (dev_is_expander(child->dev_type))  in sas_unregister_ex_tree()
1839 			sas_unregister_ex_tree(port, child);  in sas_unregister_ex_tree()
1841 			sas_unregister_dev(port, child);  in sas_unregister_ex_tree()
1851 	struct domain_device *child, *n, *found = NULL;  in sas_unregister_devs_sas_addr()  local
1853 		list_for_each_entry_safe(child, n,  in sas_unregister_devs_sas_addr()
1855 			if (sas_phy_match_dev_addr(child, phy)) {  in sas_unregister_devs_sas_addr()
1856 				set_bit(SAS_DEV_GONE, &child->state);  in sas_unregister_devs_sas_addr()
1857 				if (dev_is_expander(child->dev_type))  in sas_unregister_devs_sas_addr()
1858 					sas_unregister_ex_tree(parent->port, child);  in sas_unregister_devs_sas_addr()
1860 					sas_unregister_dev(parent->port, child);  in sas_unregister_devs_sas_addr()
1861 				found = child;  in sas_unregister_devs_sas_addr()
1885 	struct domain_device *child;  in sas_discover_bfs_by_root_level()  local
1888 	list_for_each_entry(child, &ex_root->children, siblings) {  in sas_discover_bfs_by_root_level()
1889 		if (dev_is_expander(child->dev_type)) {  in sas_discover_bfs_by_root_level()
1891 				rphy_to_expander_device(child->rphy);  in sas_discover_bfs_by_root_level()
1894 				res = sas_discover_bfs_by_root_level(child,  in sas_discover_bfs_by_root_level()
1897 				res = sas_ex_discover_devices(child, -1);  in sas_discover_bfs_by_root_level()
1924 	struct domain_device *child;  in sas_discover_new()  local
1939 	list_for_each_entry(child, &dev->ex_dev.children, siblings) {  in sas_discover_new()
1940 		if (sas_phy_match_dev_addr(child, ex_phy)) {  in sas_discover_new()
1941 			if (dev_is_expander(child->dev_type))  in sas_discover_new()
1942 				res = sas_discover_bfs_by_root(child);  in sas_discover_new()