Function prototype or declaration at include/linux/usb/composite.h, line 602 References: drivers/usb/gadget/configfs.c, line 607 drivers/usb/gadget/configfs.c, line 613 drivers/usb/gadget/function/f_acm.c, line 785 drivers/usb/gadget/function/f_fs.c, line 3488 drivers/usb/gadget/function/f_hid.c, line 900 drivers/usb/gadget/function/f_loopback.c, line 466 drivers/usb/gadget/function/f_mass_storage.c, line 3226 drivers/usb/gadget/function/f_midi.c, line 1086 drivers/usb/gadget/function/f_obex.c, line 391 drivers/usb/gadget/function/f_phonet.c, line 582 drivers/usb/gadget/function/f_printer.c, line 1204 drivers/usb/gadget/function/f_serial.c, line 262 drivers/usb/gadget/function/f_sourcesink.c, line 883 drivers/usb/gadget/function/f_tcm.c, line 2160 drivers/usb/gadget/function/f_uac1.c, line 779 drivers/usb/gadget/function/f_uac1_legacy.c, line 812 drivers/usb/gadget/function/f_uac2.c, line 1224 drivers/usb/gadget/function/uvc_configfs.c, line 2370 drivers/usb/gadget/functions.c, line 69 drivers/usb/gadget/functions.c, line 80 drivers/usb/gadget/legacy/audio.c, line 325 drivers/usb/gadget/legacy/audio.c, line 327 drivers/usb/gadget/legacy/audio.c, line 338 drivers/usb/gadget/legacy/audio.c, line 343 drivers/usb/gadget/legacy/gmidi.c, line 112 drivers/usb/gadget/legacy/gmidi.c, line 172 drivers/usb/gadget/legacy/hid.c, line 200 drivers/usb/gadget/legacy/hid.c, line 211 drivers/usb/gadget/legacy/ncm.c, line 182 drivers/usb/gadget/legacy/ncm.c, line 191 drivers/usb/gadget/legacy/printer.c, line 197 drivers/usb/gadget/legacy/printer.c, line 204 drivers/usb/gadget/legacy/tcm_usb_gadget.c, line 166 drivers/usb/gadget/legacy/zero.c, line 388 drivers/usb/gadget/legacy/zero.c, line 394 drivers/usb/gadget/legacy/zero.c, line 404 drivers/usb/gadget/legacy/zero.c, line 407 include/linux/usb/composite.h, line 602