This patch applies to 2.6.34.7. It also applies to 2.6.35.4 althought part of it is already included in 2.6.35.4 It fixed a problem with spi_mpc8xxx.c when transmitting or receiving data bigger than PAGE_SIZE when doing a read only or write only operation It also fixed an issue with the init probe when fetching the information on parameter RAM from the DTB.
Signed-off-by: christophe leroy <[email protected]> Index: trunk/drivers/spi/spi_mpc8xxx.c =================================================================== --- trunk/drivers/spi/spi_mpc8xxx.c (révision 963) +++ trunk/drivers/spi/spi_mpc8xxx.c (copie de travail) @@ -393,11 +393,17 @@ xfer_ofs = mspi->xfer_in_progress->len - mspi->count; - out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma + xfer_ofs); + if (mspi->rx_dma == mspi->dma_dummy_rx) + out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma); + else + out_be32(&rx_bd->cbd_bufaddr, mspi->rx_dma + xfer_ofs); out_be16(&rx_bd->cbd_datlen, 0); out_be16(&rx_bd->cbd_sc, BD_SC_EMPTY | BD_SC_INTRPT | BD_SC_WRAP); - out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma + xfer_ofs); + if (mspi->tx_dma == mspi->dma_dummy_tx) + out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma); + else + out_be32(&tx_bd->cbd_bufaddr, mspi->tx_dma + xfer_ofs); out_be16(&tx_bd->cbd_datlen, xfer_len); out_be16(&tx_bd->cbd_sc, BD_SC_READY | BD_SC_INTRPT | BD_SC_WRAP | BD_SC_LAST); @@ -438,7 +444,7 @@ dev_err(dev, "unable to map tx dma\n"); return -ENOMEM; } - } else { + } else if (t->tx_buf) { mspi->tx_dma = t->tx_dma; } @@ -449,7 +455,7 @@ dev_err(dev, "unable to map rx dma\n"); goto err_rx_dma; } - } else { + } else if (t->rx_buf) { mspi->rx_dma = t->rx_dma; } @@ -822,7 +828,7 @@ if (!iprop || size != sizeof(*iprop) * 4) return -ENOMEM; - spi_base_ofs = cpm_muram_alloc_fixed(iprop[2], 2); + spi_base_ofs = iprop[2]; if (IS_ERR_VALUE(spi_base_ofs)) return -ENOMEM; @@ -844,7 +850,6 @@ return spi_base_ofs; } - cpm_muram_free(spi_base_ofs); return pram_ofs; } ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ spi-devel-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/spi-devel-general
