usb_video_vc_processing_desc
struct usb_video_vc_processing_desc *d;
d = __DECONST(struct usb_video_vc_processing_desc *, desc);
static int uvideo_has_ctrl(struct usb_video_vc_processing_desc *,
uvideo_has_ctrl(struct usb_video_vc_processing_desc *desc, int ctrl_bit)
struct usb_video_vc_processing_desc *sc_desc_vc_pu_cur;
struct usb_video_vc_processing_desc *sc_desc_vc_pu[UVIDEO_MAX_PU];