Function prototype or declaration at include/linux/usb/gadget.h, line 246 References: drivers/usb/chipidea/udc.c, line 1470 drivers/usb/gadget/function/f_acm.c, line 321 drivers/usb/gadget/function/f_fs.c, line 309 drivers/usb/gadget/function/f_fs.c, line 965 drivers/usb/gadget/function/f_mass_storage.c, line 387 drivers/usb/gadget/function/f_mass_storage.c, line 1412 drivers/usb/gadget/function/f_midi.c, line 318 drivers/usb/gadget/function/f_ncm.c, line 676 drivers/usb/gadget/function/f_sourcesink.c, line 495 drivers/usb/gadget/function/f_sourcesink.c, line 571 drivers/usb/gadget/function/uvc_v4l2.c, line 38 drivers/usb/gadget/function/uvc_video.c, line 194 drivers/usb/gadget/function/uvc_video.c, line 322 drivers/usb/gadget/legacy/inode.c, line 593 drivers/usb/gadget/legacy/inode.c, line 655 drivers/usb/gadget/legacy/inode.c, line 930 drivers/usb/gadget/legacy/inode.c, line 1160 drivers/usb/gadget/udc/core.c, line 311 drivers/usb/gadget/udc/core.c, line 320 drivers/usb/gadget/udc/lpc32xx_udc.c, line 1902 drivers/usb/gadget/udc/r8a66597-udc.c, line 1687 drivers/usb/gadget/udc/s3c-hsudc.c, line 549 drivers/usb/gadget/udc/trace.h, line 188 drivers/usb/mtu3/mtu3_gadget.c, line 418 drivers/usb/musb/musb_gadget.c, line 1436 include/linux/usb/gadget.h, line 246 include/linux/usb/gadget.h, line 270