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mmc: tmio_mmc: map DMA buffers on the DMA engine device

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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: Chris Ball <cjb@laptop.org>
This commit is contained in:
Linus Walleij 2011-02-10 16:10:37 +01:00 committed by Chris Ball
parent a5ece7d29d
commit 2dc7ddc1e7
1 changed files with 6 additions and 4 deletions
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10
drivers/mmc/host/tmio_mmc.c
View file

@ -829,7 +829,7 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
sg = host->sg_ptr;
}
ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, DMA_FROM_DEVICE);
ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE);
if (ret > 0) {
host->dma_sglen = ret;
desc = chan->device->device_prep_slave_sg(chan, sg, ret,
@ -910,7 +910,7 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host)
sg = host->sg_ptr;
}
ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, DMA_TO_DEVICE);
ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE);
if (ret > 0) {
host->dma_sglen = ret;
desc = chan->device->device_prep_slave_sg(chan, sg, ret,
@ -982,10 +982,12 @@ static void tmio_tasklet_fn(unsigned long arg)
goto out;
if (host->data->flags & MMC_DATA_READ)
dma_unmap_sg(&host->pdev->dev, host->sg_ptr, host->dma_sglen,
dma_unmap_sg(host->chan_rx->device->dev,
host->sg_ptr, host->dma_sglen,
DMA_FROM_DEVICE);
else
dma_unmap_sg(&host->pdev->dev, host->sg_ptr, host->dma_sglen,
dma_unmap_sg(host->chan_tx->device->dev,
host->sg_ptr, host->dma_sglen,
DMA_TO_DEVICE);
tmio_mmc_do_data_irq(host);