needs_serial 2254 drivers/usb/gadget/composite.c if (composite->needs_serial && !cdev->desc.iSerialNumber) needs_serial 229 drivers/usb/gadget/legacy/mass_storage.c .needs_serial = 1, needs_serial 488 drivers/usb/gadget/legacy/multi.c .needs_serial = 1, needs_serial 390 include/linux/usb/composite.h unsigned needs_serial:1;