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

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>
hifive-unleashed-5.1
Linus Walleij 2011-02-10 16:09:29 +01:00 committed by Chris Ball
parent 5328906aa2
commit 1ed828dbb4
1 changed files with 8 additions and 4 deletions
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12
drivers/mmc/host/sh_mmcif.c
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@ -194,10 +194,12 @@ static void mmcif_dma_complete(void *arg)
return;
if (host->data->flags & MMC_DATA_READ)
dma_unmap_sg(&host->pd->dev, host->data->sg, host->dma_sglen,
dma_unmap_sg(host->chan_rx->device->dev,
host->data->sg, host->dma_sglen,
DMA_FROM_DEVICE);
else
dma_unmap_sg(&host->pd->dev, host->data->sg, host->dma_sglen,
dma_unmap_sg(host->chan_tx->device->dev,
host->data->sg, host->dma_sglen,
DMA_TO_DEVICE);
complete(&host->dma_complete);
@ -211,7 +213,8 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
dma_cookie_t cookie = -EINVAL;
int ret;
ret = dma_map_sg(&host->pd->dev, sg, host->data->sg_len, DMA_FROM_DEVICE);
ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len,
DMA_FROM_DEVICE);
if (ret > 0) {
host->dma_sglen = ret;
desc = chan->device->device_prep_slave_sg(chan, sg, ret,
@ -263,7 +266,8 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
dma_cookie_t cookie = -EINVAL;
int ret;
ret = dma_map_sg(&host->pd->dev, sg, host->data->sg_len, DMA_TO_DEVICE);
ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len,
DMA_TO_DEVICE);
if (ret > 0) {
host->dma_sglen = ret;
desc = chan->device->device_prep_slave_sg(chan, sg, ret,