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carma-fpga: pass correct flags to ->device_prep_dma_memcpy() 

DMA unmapping is handled by a driver so tell fsldma.c driver
(which is the DMA engine driver used by carma-fpga) to skip
unmapping destination and source buffers.

Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dan Williams <djbw@fb.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2012-11-05 10:00:15 +00:00 committed by Vinod Koul
parent d1806a5c4d
commit bfc191ea56
1 changed files with 3 additions and 1 deletions
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4
drivers/misc/carma/carma-fpga.c
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@ -631,6 +631,8 @@ static int data_submit_dma(struct fpga_device *priv, struct data_buf *buf)
struct dma_async_tx_descriptor *tx;
dma_cookie_t cookie;
dma_addr_t dst, src;
unsigned long dma_flags = DMA_COMPL_SKIP_DEST_UNMAP |
DMA_COMPL_SKIP_SRC_UNMAP;
dst_sg = buf->vb.sglist;
dst_nents = buf->vb.sglen;
@ -666,7 +668,7 @@ static int data_submit_dma(struct fpga_device *priv, struct data_buf *buf)
src = SYS_FPGA_BLOCK;
tx = chan->device->device_prep_dma_memcpy(chan, dst, src,
REG_BLOCK_SIZE,
0);
dma_flags);
if (!tx) {
dev_err(priv->dev, "unable to prep SYS-FPGA DMA\n");
return -ENOMEM;