func_lb 251 drivers/usb/gadget/legacy/zero.c static struct usb_function *func_lb; func_lb 315 drivers/usb/gadget/legacy/zero.c func_lb = usb_get_function(func_inst_lb); func_lb 316 drivers/usb/gadget/legacy/zero.c if (IS_ERR(func_lb)) { func_lb 317 drivers/usb/gadget/legacy/zero.c status = PTR_ERR(func_lb); func_lb 370 drivers/usb/gadget/legacy/zero.c status = usb_add_function(&loopback_driver, func_lb); func_lb 385 drivers/usb/gadget/legacy/zero.c usb_put_function(func_lb); func_lb 386 drivers/usb/gadget/legacy/zero.c func_lb = NULL; func_lb 405 drivers/usb/gadget/legacy/zero.c if (!IS_ERR_OR_NULL(func_lb)) func_lb 406 drivers/usb/gadget/legacy/zero.c usb_put_function(func_lb);