READ_BUFFER_DROP  867 drivers/usb/gadget/function/f_fs.c 	struct ffs_buffer *buf = xchg(&epfile->read_buffer, READ_BUFFER_DROP);
READ_BUFFER_DROP  868 drivers/usb/gadget/function/f_fs.c 	if (buf && buf != READ_BUFFER_DROP)
READ_BUFFER_DROP  883 drivers/usb/gadget/function/f_fs.c 	if (!buf || buf == READ_BUFFER_DROP)