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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: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Anatolij Gustschin 2010-02-15 22:35:23 +01:00 committed by Dan Williams
parent 76bd061f5c
commit 94de648d72
1 changed files with 3 additions and 3 deletions
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6
drivers/dma/dmatest.c
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@ -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);
}