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mmc: atmel-mci: map DMA sglist on the DMA engine 

As established for the MMCI, it is proper to map the DMA buffers
on the DMA engine which is the one actually performing the DMA.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Linus Walleij 2011-02-10 16:08:06 +01:00 committed by Chris Ball
parent 5fd11c0754
commit 266ac3f297
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/mmc/host/atmel-mci.c
View File

@ -578,7 +578,8 @@ static void atmci_dma_cleanup(struct atmel_mci *host)
struct mmc_data *data = host->data;
if (data)
dma_unmap_sg(&host->pdev->dev, data->sg, data->sg_len,
dma_unmap_sg(host->dma.chan->device->dev,
data->sg, data->sg_len,
((data->flags & MMC_DATA_WRITE)
? DMA_TO_DEVICE : DMA_FROM_DEVICE));
}
@ -684,7 +685,8 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
else
direction = DMA_TO_DEVICE;
sglen = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, direction);
sglen = dma_map_sg(chan->device->dev, data->sg,
data->sg_len, direction);
if (sglen != data->sg_len)
goto unmap_exit;
desc = chan->device->device_prep_slave_sg(chan,
@ -699,7 +701,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
return 0;
unmap_exit:
dma_unmap_sg(&host->pdev->dev, data->sg, sglen, direction);
dma_unmap_sg(chan->device->dev, data->sg, sglen, direction);
return -ENOMEM;
}