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async_tx/raid6: add missing dma_unmap calls to the async fail case

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If we are unable to offload async_mult() or async_sum_product(), then
unmap the buffers before falling through to the synchronous path.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2009-09-21 10:47:40 -07:00
parent cdef57dbb6
commit 1f6672d44c
1 changed files with 13 additions and 0 deletions
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13
crypto/async_tx/async_raid6_recov.c
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@ -55,6 +55,13 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef,
async_tx_submit(chan, tx, submit); async_tx_submit(chan, tx, submit);
return tx; return tx;
} }
/* could not get a descriptor, unmap and fall through to
* the synchronous path
*/
dma_unmap_page(dev, dma_dest[1], len, DMA_BIDIRECTIONAL);
dma_unmap_page(dev, dma_src[0], len, DMA_TO_DEVICE);
dma_unmap_page(dev, dma_src[1], len, DMA_TO_DEVICE);
} }
/* run the operation synchronously */ /* run the operation synchronously */
@ -101,6 +108,12 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len,
async_tx_submit(chan, tx, submit); async_tx_submit(chan, tx, submit);
return tx; return tx;
} }
/* could not get a descriptor, unmap and fall through to
* the synchronous path
*/
dma_unmap_page(dev, dma_dest[1], len, DMA_BIDIRECTIONAL);
dma_unmap_page(dev, dma_src[0], len, DMA_TO_DEVICE);
} }
/* no channel available, or failed to allocate a descriptor, so /* no channel available, or failed to allocate a descriptor, so