41 	struct mdio_mux_parent_bus *pb = cb->parent;  in mdio_mux_read()  local
44 	mutex_lock_nested(&pb->mii_bus->mdio_lock, MDIO_MUTEX_MUX);  in mdio_mux_read()
45 	r = pb->switch_fn(pb->current_child, cb->bus_number, pb->switch_data);  in mdio_mux_read()
49 	pb->current_child = cb->bus_number;  in mdio_mux_read()
51 	r = pb->mii_bus->read(pb->mii_bus, phy_id, regnum);  in mdio_mux_read()
53 	mutex_unlock(&pb->mii_bus->mdio_lock);  in mdio_mux_read()
65 	struct mdio_mux_parent_bus *pb = cb->parent;  in mdio_mux_write()  local
69 	mutex_lock_nested(&pb->mii_bus->mdio_lock, MDIO_MUTEX_MUX);  in mdio_mux_write()
70 	r = pb->switch_fn(pb->current_child, cb->bus_number, pb->switch_data);  in mdio_mux_write()
74 	pb->current_child = cb->bus_number;  in mdio_mux_write()
76 	r = pb->mii_bus->write(pb->mii_bus, phy_id, regnum, val);  in mdio_mux_write()
78 	mutex_unlock(&pb->mii_bus->mdio_lock);  in mdio_mux_write()
85 static void mdio_mux_uninit_children(struct mdio_mux_parent_bus *pb)  in mdio_mux_uninit_children()  argument
87 	struct mdio_mux_child_bus *cb = pb->children;  in mdio_mux_uninit_children()
107 	struct mdio_mux_parent_bus *pb;  in mdio_mux_init()  local
131 	pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL);  in mdio_mux_init()
132 	if (!pb) {  in mdio_mux_init()
137 	pb->switch_data = data;  in mdio_mux_init()
138 	pb->switch_fn = switch_fn;  in mdio_mux_init()
139 	pb->current_child = -1;  in mdio_mux_init()
140 	pb->parent_id = parent_count++;  in mdio_mux_init()
141 	pb->mii_bus = parent_bus;  in mdio_mux_init()
161 		cb->parent = pb;  in mdio_mux_init()
172 			 cb->mii_bus->name, pb->parent_id, v);  in mdio_mux_init()
188 			cb->next = pb->children;  in mdio_mux_init()
189 			pb->children = cb;  in mdio_mux_init()
192 	if (pb->children) {  in mdio_mux_init()
193 		*mux_handle = pb;  in mdio_mux_init()
200 	mdio_mux_uninit_children(pb);  in mdio_mux_init()
212 	struct mdio_mux_parent_bus *pb = mux_handle;  in mdio_mux_uninit()  local
214 	mdio_mux_uninit_children(pb);  in mdio_mux_uninit()
215 	put_device(&pb->mii_bus->dev);  in mdio_mux_uninit()