Function prototype or declaration at include/linux/usb/gadget.h, line 241 References: drivers/usb/chipidea/udc.c, line 1474 drivers/usb/gadget/function/f_acm.c, line 324 drivers/usb/gadget/function/f_fs.c, line 312 drivers/usb/gadget/function/f_fs.c, line 966 drivers/usb/gadget/function/f_mass_storage.c, line 387 drivers/usb/gadget/function/f_mass_storage.c, line 1443 drivers/usb/gadget/function/f_midi.c, line 303 drivers/usb/gadget/function/f_ncm.c, line 681 drivers/usb/gadget/function/f_sourcesink.c, line 499 drivers/usb/gadget/function/f_sourcesink.c, line 575 drivers/usb/gadget/function/uvc_v4l2.c, line 42 drivers/usb/gadget/function/uvc_video.c, line 198 drivers/usb/gadget/function/uvc_video.c, line 326 drivers/usb/gadget/legacy/inode.c, line 596 drivers/usb/gadget/legacy/inode.c, line 658 drivers/usb/gadget/legacy/inode.c, line 933 drivers/usb/gadget/legacy/inode.c, line 1156 drivers/usb/gadget/udc/core.c, line 323 drivers/usb/gadget/udc/core.c, line 332 drivers/usb/gadget/udc/lpc32xx_udc.c, line 1915 drivers/usb/gadget/udc/r8a66597-udc.c, line 1690 drivers/usb/gadget/udc/s3c-hsudc.c, line 552 drivers/usb/gadget/udc/trace.h, line 199 drivers/usb/musb/musb_gadget.c, line 1465 include/linux/usb/gadget.h, line 241 include/linux/usb/gadget.h, line 265