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dmaengine: fix xor sources continuation

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the partial xor result must be kept until the next
tx is generated.

Cc: <stable@vger.kernel.org>
Signed-off-by: Xuelin Shi <xuelin.shi@freescale.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Xuelin Shi 2014-07-01 16:32:38 +08:00 committed by Dan Williams
parent fbeec99ad5
commit 87cea76384
1 changed files with 1 additions and 2 deletions
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3
crypto/async_tx/async_xor.c
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@ -78,8 +78,6 @@ do_async_xor(struct dma_chan *chan, struct dmaengine_unmap_data *unmap,
tx = dma->device_prep_dma_xor(chan, dma_dest, src_list, tx = dma->device_prep_dma_xor(chan, dma_dest, src_list,
xor_src_cnt, unmap->len, xor_src_cnt, unmap->len,
dma_flags); dma_flags);
src_list[0] = tmp;
if (unlikely(!tx)) if (unlikely(!tx))
async_tx_quiesce(&submit->depend_tx); async_tx_quiesce(&submit->depend_tx);
@ -92,6 +90,7 @@ do_async_xor(struct dma_chan *chan, struct dmaengine_unmap_data *unmap,
xor_src_cnt, unmap->len, xor_src_cnt, unmap->len,
dma_flags); dma_flags);
} }
src_list[0] = tmp;
dma_set_unmap(tx, unmap); dma_set_unmap(tx, unmap);
async_tx_submit(chan, tx, submit); async_tx_submit(chan, tx, submit);