net/mdio/mdio-mux.c

41 	struct mdio_mux_parent_bus *pb = cb->parent;
44 	mutex_lock_nested(&pb->mii_bus->mdio_lock, MDIO_MUTEX_MUX);
45 	r = pb->switch_fn(pb->current_child, cb->bus_number, pb->switch_data);
49 	pb->current_child = cb->bus_number;
51 	r = pb->mii_bus->read(pb->mii_bus, phy_id, regnum);
53 	mutex_unlock(&pb->mii_bus->mdio_lock);
62 	struct mdio_mux_parent_bus *pb = cb->parent;
65 	mutex_lock_nested(&pb->mii_bus->mdio_lock, MDIO_MUTEX_MUX);
66 	r = pb->switch_fn(pb->current_child, cb->bus_number, pb->switch_data);
70 	pb->current_child = cb->bus_number;
72 	r = pb->mii_bus->read_c45(pb->mii_bus, phy_id, dev_addr, regnum);
74 	mutex_unlock(&pb->mii_bus->mdio_lock);
86 	struct mdio_mux_parent_bus *pb = cb->parent;
90 	mutex_lock_nested(&pb->mii_bus->mdio_lock, MDIO_MUTEX_MUX);
91 	r = pb->switch_fn(pb->current_child, cb->bus_number, pb->switch_data);
95 	pb->current_child = cb->bus_number;
97 	r = pb->mii_bus->write(pb->mii_bus, phy_id, regnum, val);
99 	mutex_unlock(&pb->mii_bus->mdio_lock);
108 	struct mdio_mux_parent_bus *pb = cb->parent;
112 	mutex_lock_nested(&pb->mii_bus->mdio_lock, MDIO_MUTEX_MUX);
113 	r = pb->switch_fn(pb->current_child, cb->bus_number, pb->switch_data);
117 	pb->current_child = cb->bus_number;
119 	r = pb->mii_bus->write_c45(pb->mii_bus, phy_id, dev_addr, regnum, val);
121 	mutex_unlock(&pb->mii_bus->mdio_lock);
128 static void mdio_mux_uninit_children(struct mdio_mux_parent_bus *pb)
130 	struct mdio_mux_child_bus *cb = pb->children;
150 	struct mdio_mux_parent_bus *pb;
174 	pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL);
175 	if (!pb) {
180 	pb->switch_data = data;
181 	pb->switch_fn = switch_fn;
182 	pb->current_child = -1;
183 	pb->parent_id = parent_count++;
184 	pb->mii_bus = parent_bus;
204 		cb->parent = pb;
215 			 cb->mii_bus->name, pb->parent_id, v);
237 			cb->next = pb->children;
238 			pb->children = cb;
241 	if (pb->children) {
242 		*mux_handle = pb;
249 	mdio_mux_uninit_children(pb);
261 	struct mdio_mux_parent_bus *pb = mux_handle;
263 	mdio_mux_uninit_children(pb);
264 	put_device(&pb->mii_bus->dev);