v4l2_control
usbvc_v4l2_get_ctrl(usbvc_state_t *usbvcp, struct v4l2_control *v4l2_ctrl)
usbvc_v4l2_set_ctrl(usbvc_state_t *usbvcp, struct v4l2_control *v4l2_ctrl)
static int usbvc_v4l2_get_ctrl(usbvc_state_t *, struct v4l2_control *);
static int usbvc_v4l2_set_ctrl(usbvc_state_t *, struct v4l2_control *);
struct v4l2_control ctrl;
struct v4l2_control ctrl;
_NOTE(SCHEME_PROTECTS_DATA("unshared data", v4l2_control))
#define VIDIOC_G_CTRL _IOWR('V', 27, struct v4l2_control)
#define VIDIOC_S_CTRL _IOWR('V', 28, struct v4l2_control)
#define VIDIOC_S_CTRL_OLD _IOW('V', 28, struct v4l2_control)