XFER_NR           563 dev/usb/umass.c 	for (i = 0; i < XFER_NR; i++) {
XFER_NR           727 dev/usb/umass.c 	for (i = 0; i < XFER_NR; i++)
XFER_NR           219 dev/usb/umassvar.h 	usbd_xfer_handle	transfer_xfer[XFER_NR]; /* for ctrl xfers */