STATUS_RXFIFOEMPTY
while (readl_relaxed(qspi->regs + REG_STATUS) & STATUS_RXFIFOEMPTY)
while (readl_relaxed(qspi->regs + REG_STATUS) & STATUS_RXFIFOEMPTY)
while (readl_relaxed(qspi->regs + REG_STATUS) & STATUS_RXFIFOEMPTY)
while (readl_relaxed(qspi->regs + REG_STATUS) & STATUS_RXFIFOEMPTY)