diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2011-02-10 16:08:16 +0100 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-03-15 13:49:05 -0400 |
| commit | 88ce4db313bca1e4e6ef3b448471f85d3e14a854 (patch) | |
| tree | 1d028208211c7dc7af14a79828494ade9c97cf5d | |
| parent | 266ac3f297adb72fb6c34949a38337c6fad4c7a6 (diff) | |
mmc: atmel-mci: conform to DMA-API
Fixes the following:
- It is perfectly legal for the dma_map_sg() to return fewer
entries than were passed in.
- Supply the returned numer of (possibly coalesced) entries to
the device_pre_slave_sg() function.
- Use the proper original sg_len when unmapping the sglist
in the error path.
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>
| -rw-r--r-- | drivers/mmc/host/atmel-mci.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index 045bdbbe372..df5a1354237 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -687,10 +687,9 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) 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, - data->sg, data->sg_len, direction, + data->sg, sglen, direction, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) goto unmap_exit; @@ -701,7 +700,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) return 0; unmap_exit: - dma_unmap_sg(chan->device->dev, data->sg, sglen, direction); + dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, direction); return -ENOMEM; } |