The control_data field is used to initialize the codec's control_data field,
but since this is also done by the snd-soc-cache core, the redundant
assignment can be removed and the field can be dropped.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
 struct wm8904_priv {
 
        enum wm8904_type devtype;
-       void *control_data;
 
        struct regulator_bulk_data supplies[WM8904_NUM_SUPPLIES];
 
 
        wm8904->devtype = id->driver_data;
        i2c_set_clientdata(i2c, wm8904);
-       wm8904->control_data = i2c;
        wm8904->pdata = i2c->dev.platform_data;
 
        ret = snd_soc_register_codec(&i2c->dev,