ai_read_n         640 drivers/staging/comedi/drivers/rtd520.c 			if (ai_read_n(dev, s, devpriv->fifosz / 2) < 0)
ai_read_n         648 drivers/staging/comedi/drivers/rtd520.c 				if (ai_read_n(dev, s, devpriv->xfer_count) < 0)