Commit 94de648d authored by Anatolij Gustschin's avatar Anatolij Gustschin Committed by Dan Williams
Browse files

dmatest: correct raid6 PQ test 



The number of PQ sources specified by module parameter "pq_sources"
is always forced odd to fit into dmatest's destination verificaton
scheme. But number of PQ sources and coefficients as passed to the
driver's prep_dma_pq() is not adjusted accordingly.

Fix it now to get correct PQ testing results in the case passed
"pq_sources" parameter is even.

Signed-off-by: default avatarAnatolij Gustschin <agust@denx.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 76bd061f

drivers/dma/dmatest.c

+3 −3
Original line number Diff line number Diff line
@@ -237,7 +237,7 @@ static int dmatest_func(void *data) 
	dma_cookie_t		cookie;

	enum dma_status		status;

	enum dma_ctrl_flags 	flags;

	u8			pq_coefs[pq_sources];

	u8			pq_coefs[pq_sources + 1];

	int			ret;

	int			src_cnt;

	int			dst_cnt;
@@ -257,7 +257,7 @@ static int dmatest_func(void *data) 
	} else if (thread->type == DMA_PQ) {

		src_cnt = pq_sources | 1; /* force odd to ensure dst = src */

		dst_cnt = 2;

		for (i = 0; i < pq_sources; i++)

		for (i = 0; i < src_cnt; i++)

			pq_coefs[i] = 1;

	} else

		goto err_srcs;
@@ -355,7 +355,7 @@ static int dmatest_func(void *data) 
			for (i = 0; i < dst_cnt; i++)

				dma_pq[i] = dma_dsts[i] + dst_off;

			tx = dev->device_prep_dma_pq(chan, dma_pq, dma_srcs,

						     pq_sources, pq_coefs,

						     src_cnt, pq_coefs,

						     len, flags);

		}

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