struct i2c_client has a direct pointer to the adapter, no need to dig
it out of the struct device tree.
Suggested-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Peter Rosin <peda@axentia.se>
 
 static int ltc4306_probe(struct i2c_client *client)
 {
-       struct i2c_adapter *adap = to_i2c_adapter(client->dev.parent);
+       struct i2c_adapter *adap = client->adapter;
        const struct chip_desc *chip;
        struct i2c_mux_core *muxc;
        struct ltc4306 *data;