SD_WriteBlock()函数卡住了，求各位帮助、指点！

King_w1117

SD__WriteBlock()函数卡在while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK)){}一直处于死循环，不能跳出来。求各位帮忙。
if (DeviceMode == SD_DMA_MODE)
  {
    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
    SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, BlockSize);
    SDIO_DMACmd(ENABLE);
    while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK))   
    {}
    if (TransferError != SD_OK)
    {
      return(TransferError);
    }
  }