v4l2_i2c_subdev_unregister  102 drivers/media/v4l2-core/v4l2-device.c 			v4l2_i2c_subdev_unregister(sd);
v4l2_i2c_subdev_unregister  219 include/media/v4l2-common.h void v4l2_i2c_subdev_unregister(struct v4l2_subdev *sd);