Symbol: v4l2_query_ext_ctrl
drivers/media/v4l2-core/v4l2-ctrls-api.c
1057
int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc)
include/uapi/linux/videodev2.h
2012
struct v4l2_query_ext_ctrl {