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>
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@ -631,6 +631,8 @@ static int data_submit_dma(struct fpga_device *priv, struct data_buf *buf)
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struct dma_async_tx_descriptor *tx;
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struct dma_async_tx_descriptor *tx;
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dma_cookie_t cookie;
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dma_cookie_t cookie;
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dma_addr_t dst, src;
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dma_addr_t dst, src;
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unsigned long dma_flags = DMA_COMPL_SKIP_DEST_UNMAP |
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DMA_COMPL_SKIP_SRC_UNMAP;
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dst_sg = buf->vb.sglist;
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dst_sg = buf->vb.sglist;
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dst_nents = buf->vb.sglen;
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dst_nents = buf->vb.sglen;
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@ -666,7 +668,7 @@ static int data_submit_dma(struct fpga_device *priv, struct data_buf *buf)
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src = SYS_FPGA_BLOCK;
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src = SYS_FPGA_BLOCK;
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tx = chan->device->device_prep_dma_memcpy(chan, dst, src,
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tx = chan->device->device_prep_dma_memcpy(chan, dst, src,
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REG_BLOCK_SIZE,
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REG_BLOCK_SIZE,
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0);
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dma_flags);
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if (!tx) {
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if (!tx) {
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dev_err(priv->dev, "unable to prep SYS-FPGA DMA\n");
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dev_err(priv->dev, "unable to prep SYS-FPGA DMA\n");
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return -ENOMEM;
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return -ENOMEM;
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