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>
diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c
index 822a42d..6d73dde 100644
--- a/crypto/async_tx/async_raid6_recov.c
+++ b/crypto/async_tx/async_raid6_recov.c
@@ -55,6 +55,13 @@
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_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