FIFO_STATE_R_EMPTY
while (FIFO_STATE_R_EMPTY(readl(rnandc->regs + FIFO_STATE_REG)))
if (!FIFO_STATE_R_EMPTY(readl(rnandc->regs + FIFO_STATE_REG))) {
while (FIFO_STATE_R_EMPTY(readl(rnandc->regs + FIFO_STATE_REG)))
if (!FIFO_STATE_R_EMPTY(readl(rnandc->regs + FIFO_STATE_REG))) {