UVC_STREAM_FID   1453 drivers/media/usb/gspca/ov534.c #define UVC_STREAM_FID	(1 << 0)
UVC_STREAM_FID   1625 drivers/media/usb/gspca/ov534_9.c #define UVC_STREAM_FID	(1 << 0)
UVC_STREAM_FID    173 include/uapi/linux/usb/video.h #define UVC_STREAM_FID					(1 << 0)