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path: root/drivers/spi/spi_mpc8xxx.c
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Diffstat (limited to 'drivers/spi/spi_mpc8xxx.c')
-rw-r--r--drivers/spi/spi_mpc8xxx.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/spi/spi_mpc8xxx.c b/drivers/spi/spi_mpc8xxx.c
index d31b57f7baa..1dd86b835cd 100644
--- a/drivers/spi/spi_mpc8xxx.c
+++ b/drivers/spi/spi_mpc8xxx.c
@@ -408,11 +408,17 @@ static void mpc8xxx_spi_cpm_bufs_start(struct mpc8xxx_spi *mspi)
408 408
409 xfer_ofs = mspi->xfer_in_progress->len - mspi->count; 409 xfer_ofs = mspi->xfer_in_progress->len - mspi->count;
410 410
411 out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma + xfer_ofs); 411 if (mspi->rx_dma == mspi->dma_dummy_rx)
412 out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma);
413 else
414 out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma + xfer_ofs);
412 out_be16(&rx_bd->cbd_datlen, 0); 415 out_be16(&rx_bd->cbd_datlen, 0);
413 out_be16(&rx_bd->cbd_sc, BD_SC_EMPTY | BD_SC_INTRPT | BD_SC_WRAP); 416 out_be16(&rx_bd->cbd_sc, BD_SC_EMPTY | BD_SC_INTRPT | BD_SC_WRAP);
414 417
415 out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma + xfer_ofs); 418 if (mspi->tx_dma == mspi->dma_dummy_tx)
419 out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma);
420 else
421 out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma + xfer_ofs);
416 out_be16(&tx_bd->cbd_datlen, xfer_len); 422 out_be16(&tx_bd->cbd_datlen, xfer_len);
417 out_be16(&tx_bd->cbd_sc, BD_SC_READY | BD_SC_INTRPT | BD_SC_WRAP | 423 out_be16(&tx_bd->cbd_sc, BD_SC_READY | BD_SC_INTRPT | BD_SC_WRAP |
418 BD_SC_LAST); 424 BD_SC_LAST);