Symbol: __ffs_ep0_stall
drivers/usb/gadget/function/f_fs.c
2176
__ffs_ep0_stall(ffs);
drivers/usb/gadget/function/f_fs.c
451
ret = __ffs_ep0_stall(ffs);
drivers/usb/gadget/function/f_fs.c
595
ret = __ffs_ep0_stall(ffs);