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Commit 1f6672d4 authored by Dan Williams's avatar Dan Williams
Browse files

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: default avatarDan Williams <dan.j.williams@intel.com>
parent cdef57db

crypto/async_tx/async_raid6_recov.c

+13 −0
Original line number Diff line number Diff line
@@ -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