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authorDan Williams <dan.j.williams@intel.com>2009-09-21 10:47:40 -0700
committerDan Williams <dan.j.williams@intel.com>2009-09-21 10:47:40 -0700
commit1f6672d44c1ae7408b43c06170ec34eb0a0e9b9f (patch)
treeb8c2be522cf71512a5f9587448967d78ae31bfbf /crypto
parentcdef57dbb618608bfffda2fc32c8d0a4012a1d3a (diff)
async_tx/raid6: add missing dma_unmap calls to the async fail case
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>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/async_tx/async_raid6_recov.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c
index 822a42d1006..6d73dde4786 100644
--- a/crypto/async_tx/async_raid6_recov.c
+++ b/crypto/async_tx/async_raid6_recov.c
@@ -55,6 +55,13 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef,
async_tx_submit(chan, tx, submit);
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 */
@@ -101,6 +108,12 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len,
async_tx_submit(chan, tx, submit);
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